CSES - BOI 2026 Mirror Day 2

Submission details
Task:	Sort
Sender:	Valters07
Submission time:	2026-04-17 13:56:54 +0300
Language:	C++ (C++17)
Status:	READY
Result:	18

Feedback
subtask	verdict	score
#1	ACCEPTED	6
#2	ACCEPTED	5
#3	ACCEPTED	7
#4	WRONG ANSWER	0
#5	WRONG ANSWER	0
#6	WRONG ANSWER	0
#7	WRONG ANSWER	0

Test results
test	verdict	time	subtask
#1	ACCEPTED	0.02 s	2, 6, 7	details
#2	ACCEPTED	0.02 s	1, 2, 3, 6, 7	details
#3	ACCEPTED	0.02 s	2, 6, 7	details
#4	ACCEPTED	0.02 s	1, 2, 3, 6, 7	details
#5	ACCEPTED	0.02 s	1, 2, 3, 6, 7	details
#6	ACCEPTED	0.02 s	1, 2, 3, 6, 7	details
#7	ACCEPTED	0.02 s	1, 2, 3, 6, 7	details
#8	ACCEPTED	0.02 s	1, 2, 3, 6, 7	details
#9	ACCEPTED	0.02 s	1, 2, 3, 6, 7	details
#10	ACCEPTED	0.02 s	1, 2, 3, 6, 7	details
#11	ACCEPTED	0.02 s	2, 6, 7	details
#12	ACCEPTED	0.02 s	2, 6, 7	details
#13	ACCEPTED	0.02 s	2, 6, 7	details
#14	ACCEPTED	0.02 s	2, 6, 7	details
#15	ACCEPTED	0.02 s	2, 6, 7	details
#16	ACCEPTED	0.67 s	3, 7	details
#17	ACCEPTED	0.61 s	3, 7	details
#18	ACCEPTED	0.69 s	3, 7	details
#19	ACCEPTED	0.55 s	3, 7	details
#20	ACCEPTED	0.60 s	3, 7	details
#21	ACCEPTED	0.55 s	3, 7	details
#22	ACCEPTED	0.60 s	3, 7	details
#23	ACCEPTED	0.18 s	3, 7	details
#24	WRONG ANSWER	0.57 s	4, 7	details
#25	WRONG ANSWER	0.49 s	4, 7	details
#26	WRONG ANSWER	0.60 s	4, 7	details
#27	ACCEPTED	0.18 s	4, 7	details
#28	ACCEPTED	0.67 s	4, 7	details
#29	ACCEPTED	0.51 s	4, 7	details
#30	WRONG ANSWER	0.03 s	5, 6, 7	details
#31	WRONG ANSWER	0.03 s	5, 6, 7	details
#32	ACCEPTED	0.03 s	5, 6, 7	details
#33	WRONG ANSWER	0.03 s	5, 6, 7	details
#34	ACCEPTED	0.02 s	5, 6, 7	details
#35	WRONG ANSWER	0.03 s	5, 6, 7	details
#36	WRONG ANSWER	0.03 s	6, 7	details
#37	WRONG ANSWER	0.03 s	6, 7	details
#38	WRONG ANSWER	0.03 s	6, 7	details
#39	WRONG ANSWER	0.03 s	6, 7	details
#40	ACCEPTED	0.02 s	6, 7	details
#41	WRONG ANSWER	0.03 s	6, 7	details
#42	WRONG ANSWER	0.57 s	7	details
#43	WRONG ANSWER	0.56 s	7	details
#44	WRONG ANSWER	0.55 s	7	details
#45	WRONG ANSWER	0.76 s	7	details
#46	WRONG ANSWER	0.84 s	7	details
#47	WRONG ANSWER	0.85 s	7	details
#48	WRONG ANSWER	0.85 s	7	details
#49	ACCEPTED	0.19 s	7	details
#50	WRONG ANSWER	0.74 s	7	details
#51	WRONG ANSWER	0.56 s	7	details
#52	ACCEPTED	0.02 s	1, 2, 3, 5, 6, 7	details
#53	ACCEPTED	0.02 s	1, 2, 3, 4, 5, 6, 7	details
#54	ACCEPTED	0.02 s	2, 5, 6, 7	details
#55	ACCEPTED	0.02 s	1, 2, 3, 4, 6, 7	details
#56	ACCEPTED	0.02 s	1, 2, 3, 6, 7	details
#57	WRONG ANSWER	0.02 s	6, 7	details
#58	ACCEPTED	0.06 s	3, 4, 7	details
#59	ACCEPTED	0.06 s	3, 7	details
#60	ACCEPTED	0.02 s	2, 6, 7	details
#61	ACCEPTED	0.02 s	2, 6, 7	details
#62	ACCEPTED	0.02 s	2, 6, 7	details
#63	ACCEPTED	0.02 s	2, 6, 7	details
#64	ACCEPTED	0.02 s	2, 6, 7	details

Compiler report

input/code.cpp: In function 'void init(int, int, int)':
input/code.cpp:28:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |         while(it1 < v1.size() || it2 < v2.size())
      |               ~~~~^~~~~~~~~~~
input/code.cpp:28:38: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |         while(it1 < v1.size() || it2 < v2.size())
      |                                  ~~~~^~~~~~~~~~~
input/code.cpp:30:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |             if(it1 >= v1.size())
      |                ~~~~^~~~~~~~~~~~
input/code.cpp:32:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {ak...

Code

#include <bits/stdc++.h>
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,popcnt,lzcnt")
#define fio ios_base::sync_with_stdio(0);cin.tie(0);
#define ll long long
#define ld long double
#define en exit(0);
#define pb push_back
#define fi first
#define se second
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const int N = 2e5 + 5;
vector<int> segt[4 * N];
int rr[N];
int a[N], n;
void init(int l = 1, int r = n, int pos = 1)
{
    if(l == r)
        segt[pos].pb(a[l]);
    else
    {
        int mid = (l + r) / 2;
        init(l, mid, pos * 2);
        init(mid + 1, r, pos * 2 + 1);
        int it1 = 0, it2 = 0;
        vector<int> &v1 = segt[pos * 2], &v2 = segt[pos * 2 + 1];
        while(it1 < v1.size() || it2 < v2.size())
        {
            if(it1 >= v1.size())
                segt[pos].pb(v2[it2++]);
            else if(it2 >= v2.size())
                segt[pos].pb(v1[it1++]);
            else if(v2[it2] < v1[it1])
                segt[pos].pb(v2[it2++]);
            else
                segt[pos].pb(v1[it1++]);
        }
    }
}
int get_val(int lb, int rb, int x, int l = 1, int r = n, int pos = 1)
{
    if(rb < l || r < lb)
        return 0;
    if(lb <= l && r <= rb)
    {
        int l_ = 0, r_ = segt[pos].size() - 1;
        if(x > 0)
        {
            while(l_ < r_)
            {
                int mid_ = (l_ + r_) / 2;
                if(segt[pos][mid_] >= x)
                    r_ = mid_;
                else
                    l_ = mid_ + 1;
            }
            if(segt[pos][l_] < x)
                return 0;
            return segt[pos].size() - l_;
        }
        else
        {
            while(l_ < r_)
            {
                int mid_ = (l_ + r_ + 1) / 2;
                if(segt[pos][mid_] <= -x)
                    l_ = mid_;
                else
                    r_ = mid_ - 1;
            }
            if(segt[pos][l_] > -x)
                return 0;
            return l_ + 1;
        }
    }
    else
    {
        int mid = (l + r) / 2;
        int lh = get_val(lb, rb, x, l, mid, pos * 2);
        int rh = get_val(lb, rb, x, mid + 1, r, pos * 2 + 1);
        return lh + rh;
    }
}
int dvv(int a, int b)
{
    return (a + b - 1) / b;
}
int main()
{
    fio
//    ifstream cin("in.in");
    int q;
    cin >> n >> q;
    vector<pair<int,int> > reind;
    for(int i = 1;i <= n;i++)
    {
        cin >> a[i];
        reind.pb({a[i], i});
    }
    sort(reind.begin(), reind.end());
    for(int i = 0;i < n;i++)
        a[reind[i].se] = i + 1;
    init();
    rr[n + 1] = -1;
    for(int i = n;i >= 1;i--)
    {
        if(a[i] != i)
            rr[i] = -1;
        else if(rr[i + 1] != -1)
            rr[i] = rr[i + 1];
        else
            rr[i] = i;
    }
    for(int i = 0;i < q;i++)
    {
        int a, b;
        cin >> a >> b;
        if(rr[1] == n)
        {
            cout << "0\n";
            continue;
        }
        b = n - b + 1;
        if(a < b)
        {
            int l = a, r = b;
            int lh = get_val(1, l, -l);
            int rh = get_val(r, n, r);
            if((l > 1 && lh != l) || (r < n && rh != n - r + 1) || (l + 1 < r && rr[l + 1] < r - 1))
            {
                cout << "-1\n";
                continue;
            }
            int op = 0;
            op += (rr[1] < a);
            op += (rr[r] < n);
            cout << op << "\n";
        }
        else
        {
            int d = a - b + 1;
            int l = b, r = a;
            int x = get_val(1, l - 1, r + 1);
            int y = get_val(r + 1, n, -(l - 1));
            if(x == 0 && y == 0)
            {
                if((l == 1 || rr[1] >= l - 1) || (r == n || rr[r + 1] == n))
                    cout << 1;
                else
                    cout << 2;
                cout << "\n";
            }
            else
            {
                int opx = dvv(x, d), opy = dvv(y, d);
                int op = max(opx, opy);
                cout << op * 2 + (opx == opy) << "\n";
            }
        }
    }
    return 0;
}

Test details

Test 1

Subtask: 2, 6, 7

Verdict: ACCEPTED

input
`6 3 3 1 4 1 5 9 4 1 3 3 2 5` view save

correct output
`1 -1 2` view save

user output
`1 -1 2` view save

Test 2

Subtask: 1, 2, 3, 6, 7

Verdict: ACCEPTED

input
`2 1 548813503 548813503 1 1` view save

correct output
`0` view save

user output
`0` view save

Test 3

Subtask: 2, 6, 7

Verdict: ACCEPTED

input
`1 1 417021999 1 1` view save

correct output
`0` view save

user output
`0` view save

Test 4

Subtask: 1, 2, 3, 6, 7

Verdict: ACCEPTED

input
`10 10 20751947 20751947 20751947 494...` view save

correct output
`-1 -1 1 1 -1 ...` view save

user output
`-1 -1 1 1 -1 ...` view save

Test 5

Subtask: 1, 2, 3, 6, 7

Verdict: ACCEPTED

input
`10 10 12780811 19475241 19475241 683...` view save

correct output
`0 0 0 0 0 ...` view save

user output
`0 0 0 0 0 ...` view save

Test 6

Subtask: 1, 2, 3, 6, 7

Verdict: ACCEPTED

input
`10 10 14574963 14574963 14574963 864...` view save

correct output
`0 0 0 0 0 ...` view save

user output
`0 0 0 0 0 ...` view save

Test 7

Subtask: 1, 2, 3, 6, 7

Verdict: ACCEPTED

input
`10 10 237541216 237541216 35036522 6...` view save

correct output
`-1 -1 -1 2 -1 ...` view save

user output
`-1 -1 -1 2 -1 ...` view save

Test 8

Subtask: 1, 2, 3, 6, 7

Verdict: ACCEPTED

input
`10 10 319425549 513116712 539199939 ...` view save

correct output
`-1 -1 -1 -1 -1 ...` view save

user output
`-1 -1 -1 -1 -1 ...` view save

Test 9

Subtask: 1, 2, 3, 6, 7

Verdict: ACCEPTED

input
`10 10 54363219 54363219 110986323 11...` view save

correct output
`0 0 0 0 0 ...` view save

user output
`0 0 0 0 0 ...` view save

Test 10

Subtask: 1, 2, 3, 6, 7

Verdict: ACCEPTED

input
`10 5 55687086 550701455 326656159 5...` view save

correct output
`-1 -1 -1 -1 -1` view save

user output
`-1 -1 -1 -1 -1` view save

Test 11

Subtask: 2, 6, 7

Verdict: ACCEPTED

input
`10 10 35889584 588130796 815837475 8...` view save

correct output
`-1 -1 1 1 1 ...` view save

user output
`-1 -1 1 1 1 ...` view save

Test 12

Subtask: 2, 6, 7

Verdict: ACCEPTED

input
`10 10 679842175 48724877 720966351 6...` view save

correct output
`2 3 2 1 1 ...` view save

user output
`2 3 2 1 1 ...` view save

Test 13

Subtask: 2, 6, 7

Verdict: ACCEPTED

input
`10 10 893310183 811950921 338863962 ...` view save

correct output
`2 1 1 2 5 ...` view save

user output
`2 1 1 2 5 ...` view save

Test 14

Subtask: 2, 6, 7

Verdict: ACCEPTED

input
`10 10 221045363 282395847 441913686 ...` view save

correct output
`0 0 0 0 0 ...` view save

user output
`0 0 0 0 0 ...` view save

Test 15

Subtask: 2, 6, 7

Verdict: ACCEPTED

input
`10 10 509019662 983949268 960017302 ...` view save

correct output
`3 -1 3 3 3 ...` view save

user output
`3 -1 3 3 3 ...` view save

Test 16

Subtask: 3, 7

Verdict: ACCEPTED

input
`200000 200000 2277053 2277053 2277053 227705...` view save

correct output
`-1 -1 -1 -1 -1 ...` view save

user output
`-1 -1 -1 -1 -1 ...` view save

Test 17

Subtask: 3, 7

Verdict: ACCEPTED

input
`200000 200000 6767 16596 16596 27202 37272 4...` view save

correct output
`-1 -1 -1 -1 -1 ...` view save

user output
`-1 -1 -1 -1 -1 ...` view save

Test 18

Subtask: 3, 7

Verdict: ACCEPTED

input
`200000 200000 5393 5910 9099 15755 15755 164...` view save

correct output
`-1 -1 -1 -1 -1 ...` view save

user output
`-1 -1 -1 -1 -1 ...` view save

Test 19

Subtask: 3, 7

Verdict: ACCEPTED

input
`200000 200000 3779 4629 8999 10468 22605 227...` view save

correct output
`-1 1 2 -1 -1 ...` view save

user output
`-1 1 2 -1 -1 ...` view save

Test 20

Subtask: 3, 7

Verdict: ACCEPTED

input
`200000 200000 878 2791 10849 11861 13405 239...` view save

correct output
`-1 -1 -1 -1 -1 ...` view save

user output
`-1 -1 -1 -1 -1 ...` view save

Test 21

Subtask: 3, 7

Verdict: ACCEPTED

input
`200000 200000 430 1479 1992 2829 7152 14093 ...` view save

correct output
`-1 -1 -1 -1 -1 ...` view save

user output
`-1 -1 -1 -1 -1 ...` view save

Test 22

Subtask: 3, 7

Verdict: ACCEPTED

input
`199997 200000 2733 10526 13882 14035 14689 3...` view save

correct output
`-1 -1 -1 -1 -1 ...` view save

user output
`-1 -1 -1 -1 -1 ...` view save

Test 23

Subtask: 3, 7

Verdict: ACCEPTED

input
`200000 200000 12345 13538 15407 18490 18984 ...` view save

correct output
`0 0 0 0 0 ...` view save

user output
`0 0 0 0 0 ...` view save

Test 24

Subtask: 4, 7

Verdict: WRONG ANSWER

input
`200000 200000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`-1 1 -1 -1 -1 ...` view save

user output
`-1 1 -1 -1 -1 ...` view save

Feedback: Incorrect character on line 507 col 1: expected "4", got "3"

Test 25

Subtask: 4, 7

Verdict: WRONG ANSWER

input
`200000 200000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`1 -1 1 -1 1 ...` view save

user output
`1 -1 1 -1 1 ...` view save

Feedback: Incorrect character on line 34850 col 1: expected "4", got "3"

Test 26

Subtask: 4, 7

Verdict: WRONG ANSWER

input
`200000 200000 2 2 1 1 2 1 2 1 2 2 2 1 1 1 2 ...` view save

correct output
`4 3 2 2 6 ...` view save

user output
`4 3 2 2 6 ...` view save

Feedback: Incorrect character on line 85 col 1: expected "4", got "3"

Test 27

Subtask: 4, 7

Verdict: ACCEPTED

input
`200000 200000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`0 0 0 0 0 ...` view save

user output
`0 0 0 0 0 ...` view save

Test 28

Subtask: 4, 7

Verdict: ACCEPTED

input
`200000 200000 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 ...` view save

correct output
`8513 1099 35939 9299 19597 ...` view save

user output
`8513 1099 35939 9299 19597 ...` view save

Test 29

Subtask: 4, 7

Verdict: ACCEPTED

input
`200000 200000 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 ...` view save

correct output
`178345 169257 62115 96143 64796 ...` view save

user output
`178345 169257 62115 96143 64796 ...` view save

Test 30

Subtask: 5, 6, 7

Verdict: WRONG ANSWER

input
`5000 5000 1 2 3 4 5 6 7 8 9 10 11 12 13 ...` view save

correct output
`1 1 -1 1 -1 ...` view save

user output
`1 1 -1 1 -1 ...` view save

Feedback: Incorrect character on line 486 col 1: expected "6", got "5"

Test 31

Subtask: 5, 6, 7

Verdict: WRONG ANSWER

input
`5000 5000 1 2 3 4 5 6 7 8 9 72 145 47 19...` view save

correct output
`-1 2 -1 2 -1 ...` view save

user output
`-1 2 -1 2 -1 ...` view save

Feedback: Incorrect character on line 757 col 1: expected "4", got "3"

Test 32

Subtask: 5, 6, 7

Verdict: ACCEPTED

input
`4999 5000 1 2 3 4 5 6 7 8 9 10 11 12 13 ...` view save

correct output
`-1 2 -1 -1 -1 ...` view save

user output
`-1 2 -1 -1 -1 ...` view save

Test 33

Subtask: 5, 6, 7

Verdict: WRONG ANSWER

input
`5000 5000 4033 4368 3086 3208 4313 388 8...` view save

correct output
`3 3 3 3 11 ...` view save

user output
`3 3 3 3 11 ...` view save

Feedback: Incorrect character on line 16 col 2: expected "24", got "23"

Test 34

Subtask: 5, 6, 7

Verdict: ACCEPTED

input
`5000 5000 1 2 3 4 5 6 7 8 9 10 11 12 13 ...` view save

correct output
`0 0 0 0 0 ...` view save

user output
`0 0 0 0 0 ...` view save

Test 35

Subtask: 5, 6, 7

Verdict: WRONG ANSWER

input
`5000 5000 5000 4999 4998 4997 4996 4995 ...` view save

correct output
`2039 1910 -1 687 673 ...` view save

user output
`2039 1910 -1 687 673 ...` view save

Feedback: Incorrect character on line 59 col 4: expected "1574", got "1573"

Test 36

Subtask: 6, 7

Verdict: WRONG ANSWER

input
`5000 5000 202010 457852 826471 926337 10...` view save

correct output
`-1 -1 2 -1 -1 ...` view save

user output
`-1 -1 2 -1 -1 ...` view save

Feedback: Incorrect character on line 17 col 1: expected "4", got "3"

Test 37

Subtask: 6, 7

Verdict: WRONG ANSWER

input
`5000 5000 190583 326486 431922 462939 72...` view save

correct output
`-1 -1 -1 -1 2 ...` view save

user output
`-1 -1 -1 -1 2 ...` view save

Feedback: Incorrect character on line 704 col 1: expected "4", got "3"

Test 38

Subtask: 6, 7

Verdict: WRONG ANSWER

input
`5000 5000 821998255 400550008 71790232 5...` view save

correct output
`5 3 3 2 5 ...` view save

user output
`5 3 3 2 5 ...` view save

Feedback: Incorrect character on line 8 col 1: expected "4", got "3"

Test 39

Subtask: 6, 7

Verdict: WRONG ANSWER

input
`5000 5000 266174928 446601941 191252234 ...` view save

correct output
`3 3 414 4 3 ...` view save

user output
`3 3 414 3 3 ...` view save

Feedback: Incorrect character on line 4 col 1: expected "4", got "3"

Test 40

Subtask: 6, 7

Verdict: ACCEPTED

input
`5000 5000 11621 243915 243915 949123 137...` view save

correct output
`0 0 0 0 0 ...` view save

user output
`0 0 0 0 0 ...` view save

Test 41

Subtask: 6, 7

Verdict: WRONG ANSWER

input
`5000 5000 999767052 998555066 997822810 ...` view save

correct output
`919 459 505 833 809 ...` view save

user output
`919 459 505 833 809 ...` view save

Feedback: Incorrect character on line 292 col 4: expected "1006", got "1005"

Test 42

Subtask: 7

Verdict: WRONG ANSWER

input
`200000 200000 478025 478025 478025 478025 47...` view save

correct output
`-1 -1 2 2 2 ...` view save

user output
`-1 -1 2 2 2 ...` view save

Feedback: Incorrect character on line 233 col 1: expected "4", got "3"

Test 43

Subtask: 7

Verdict: WRONG ANSWER

input
`200000 200000 1810 2088 3022 3097 7459 7943 ...` view save

correct output
`2 -1 -1 2 -1 ...` view save

user output
`2 -1 -1 2 -1 ...` view save

Feedback: Incorrect character on line 464 col 1: expected "6", got "5"

Test 44

Subtask: 7

Verdict: WRONG ANSWER

input
`199531 200000 11328 26391 30353 37063 44412 ...` view save

correct output
`-1 2 -1 2 2 ...` view save

user output
`-1 2 -1 2 2 ...` view save

Feedback: Incorrect character on line 8539 col 1: expected "6", got "5"

Test 45

Subtask: 7

Verdict: WRONG ANSWER

input
`200000 200000 106738201 369187074 412614650 ...` view save

correct output
`2 12 3 19 3 ...` view save

user output
`2 12 3 19 3 ...` view save

Feedback: Incorrect character on line 6 col 1: expected "6", got "5"

Test 46

Subtask: 7

Verdict: WRONG ANSWER

input
`200000 200000 670611290 43427363 8475380 309...` view save

correct output
`3 5 3 3 3 ...` view save

user output
`3 5 3 3 3 ...` view save

Feedback: Incorrect character on line 7 col 1: expected "4", got "3"

Test 47

Subtask: 7

Verdict: WRONG ANSWER

input
`200000 200000 907542569 504758282 948727805 ...` view save

correct output
`3 33 3 3 3 ...` view save

user output
`3 33 3 3 3 ...` view save

Feedback: Incorrect character on line 11 col 1: expected "6", got "5"

Test 48

Subtask: 7

Verdict: WRONG ANSWER

input
`200000 200000 487056731 460461648 142698485 ...` view save

correct output
`3 3 3 3 3 ...` view save

user output
`3 3 3 3 3 ...` view save

Feedback: Incorrect character on line 11 col 2: expected "12", got "11"

Test 49

Subtask: 7

Verdict: ACCEPTED

input
`200000 200000 12772 23236 23236 23236 41149 ...` view save

correct output
`0 0 0 0 0 ...` view save

user output
`0 0 0 0 0 ...` view save

Test 50

Subtask: 7

Verdict: WRONG ANSWER

input
`200000 200000 999993539 999993361 999993361 ...` view save

correct output
`125375 16687 -1 84781 46147 ...` view save

user output
`125375 16687 -1 84781 46147 ...` view save

Feedback: Incorrect character on line 137 col 4: expected "26870", got "26869"

Test 51

Subtask: 7

Verdict: WRONG ANSWER

input
`200000 200000 999993539 999993361 999993361 ...` view save

correct output
`94788 177608 95881 56377 179957 ...` view save

user output
`94788 177608 95881 56377 179957 ...` view save

Feedback: Incorrect character on line 173 col 4: expected "62430", got "62429"

Test 52

Subtask: 1, 2, 3, 5, 6, 7

Verdict: ACCEPTED

input
`5 1 2 1 3 5 4 2 2` view save

correct output
`2` view save

user output
`2` view save

Test 53

Subtask: 1, 2, 3, 4, 5, 6, 7

Verdict: ACCEPTED

input
`2 1 1 2 1 1` view save

correct output
`0` view save

user output
`0` view save

Test 54

Subtask: 2, 5, 6, 7

Verdict: ACCEPTED

input
`4 1 2 1 4 3 3 2` view save

correct output
`2` view save

user output
`2` view save

Test 55

Subtask: 1, 2, 3, 4, 6, 7

Verdict: ACCEPTED

input
`10 10 1 1 1 1 2 2 1 1 2 2 7 1 2 6 4 5 ...` view save

correct output
`-1 1 -1 -1 -1 ...` view save

user output
`-1 1 -1 -1 -1 ...` view save

Test 56

Subtask: 1, 2, 3, 6, 7

Verdict: ACCEPTED

input
`10 10 181777772 181777772 181777772 ...` view save

correct output
`-1 -1 -1 -1 -1 ...` view save

user output
`-1 -1 -1 -1 -1 ...` view save

Test 57

Subtask: 6, 7

Verdict: WRONG ANSWER

input
`100 10 92800811 524548163 939127795 9...` view save

correct output
`-1 -1 3 -1 3 ...` view save

user output
`-1 -1 3 -1 3 ...` view save

Feedback: Incorrect character on line 7 col 1: expected "8", got "7"

Test 58

Subtask: 3, 4, 7

Verdict: ACCEPTED

input
`100 100000 2 2 2 1 2 2 2 2 1 2 1 1 1 2 2 ...` view save

correct output
`-1 -1 -1 -1 -1 ...` view save

user output
`-1 -1 -1 -1 -1 ...` view save

Test 59

Subtask: 3, 7

Verdict: ACCEPTED

input
`100 100000 172695325 172695325 172695325 ...` view save

correct output
`-1 -1 -1 -1 -1 ...` view save

user output
`-1 -1 -1 -1 -1 ...` view save

Test 60

Subtask: 2, 6, 7

Verdict: ACCEPTED

input
`4 10 869194539 239439572 968540665 ...` view save

correct output
`-1 2 -1 -1 -1 ...` view save

user output
`-1 2 -1 -1 -1 ...` view save

Test 61

Subtask: 2, 6, 7

Verdict: ACCEPTED

input
`10 10 55366041 112170735 112170735 5...` view save

correct output
`-1 -1 2 1 1 ...` view save

user output
`-1 -1 2 1 1 ...` view save

Test 62

Subtask: 2, 6, 7

Verdict: ACCEPTED

input
`10 10 156018639 156018639 445832758 ...` view save

correct output
`-1 1 -1 -1 2 ...` view save

user output
`-1 1 -1 -1 2 ...` view save

Test 63

Subtask: 2, 6, 7

Verdict: ACCEPTED

input
`10 10 702507512 702507512 892090406 ...` view save

correct output
`-1 2 -1 2 2 ...` view save

user output
`-1 2 -1 2 2 ...` view save

Test 64

Subtask: 2, 6, 7

Verdict: ACCEPTED

input
`10 10 720324490 720324490 720324490 ...` view save

correct output
`-1 2 2 1 -1 ...` view save

user output
`-1 2 2 1 -1 ...` view save

BOI 2026 Mirror Day 2

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