CSES - Putka Open 2025 – 1/5

Submission details
Task:	Järjestys
Sender:	ollpu
Submission time:	2025-09-06 10:15:52 +0300
Language:	C++ (C++20)
Status:	READY
Result:	100

Feedback
group	verdict	score
#1	ACCEPTED	10
#2	ACCEPTED	10
#3	ACCEPTED	10
#4	ACCEPTED	40
#5	ACCEPTED	30

Test results
test	verdict	time	group
#1	ACCEPTED	0.00 s	1, 4, 5	details
#2	ACCEPTED	0.00 s	1, 4, 5	details
#3	ACCEPTED	0.00 s	1, 4, 5	details
#4	ACCEPTED	0.00 s	1, 4, 5	details
#5	ACCEPTED	0.00 s	1, 4, 5	details
#6	ACCEPTED	0.00 s	1, 2, 4, 5	details
#7	ACCEPTED	0.00 s	1, 3, 4, 5	details
#8	ACCEPTED	0.00 s	1, 4, 5	details
#9	ACCEPTED	0.01 s	2, 4, 5	details
#10	ACCEPTED	0.01 s	3, 4, 5	details
#11	ACCEPTED	0.01 s	4, 5	details
#12	ACCEPTED	0.01 s	4, 5	details
#13	ACCEPTED	0.01 s	4, 5	details
#14	ACCEPTED	0.01 s	4, 5	details
#15	ACCEPTED	0.03 s	2, 5	details
#16	ACCEPTED	0.03 s	3, 5	details
#17	ACCEPTED	0.02 s	5	details
#18	ACCEPTED	0.02 s	5	details
#19	ACCEPTED	0.02 s	5	details
#20	ACCEPTED	0.03 s	5	details
#21	ACCEPTED	0.03 s	5	details
#22	ACCEPTED	0.03 s	5	details

Code

#include <bits/stdc++.h>
using namespace std;

int uf_p[501], uf_s[501];

void uf_clear(int n) {
    for (int i = 0; i < n; ++i) uf_p[i] = i, uf_s[i] = 1;
}

int uf_get(int x) {
    while (uf_p[x] != x) x = uf_p[x];
    return x;
}

bool uf_join(int a, int b) {
    a = uf_get(a);
    b = uf_get(b);
    if (a == b) return false;
    if (uf_s[a] < uf_s[b]) swap(a, b);
    uf_p[b] = a;
    uf_s[a] += uf_s[b];
    return true;
}

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    int T;
    cin >> T;
    for (int Ti = 0; Ti < T; ++Ti) {
        int n;
        cin >> n;
        int N = n+1;
        int x[N], y[N];
        int ox[N], oy[N];
        for (int i = 0; i < n; ++i) {
            cin >> x[i] >> y[i];
            ox[i] = i;
            oy[i] = i;
        }
        x[n] = 2e9;
        y[n] = 0;
        ox[n] = n;
        oy[n] = n;
        sort(ox, ox+N, [&](int a, int b) {return x[a] < x[b];});
        sort(oy, oy+N, [&](int a, int b) {return y[a] < y[b];});
        bool f = 1;
        for (int i = 0; i < N; ++i) {
            if (y[oy[i]] > x[ox[i]]) f = 0;
        }
        if (!f) {
            cout << "NO\n";
            continue;
        }
        int ioy[N];
        for (int i = 0; i < N; ++i) ioy[oy[i]] = i;
        int nxt[N];
        for (int i = 0; i < N; ++i) nxt[i] = ioy[ox[i]];
        uf_clear(N);
        for (int i = 0; i < N; ++i) uf_join(i, nxt[i]);
        int p[N];
        for (int i = 0; i < N; ++i) p[i] = i;
        for (int i = 0; i+1 < N; ++i) {
            if (y[oy[p[i+1]]] <= x[ox[i]] && uf_join(p[i], p[i+1])) swap(p[i], p[i+1]);
        }
        int ip[N];
        for (int i = 0; i < N; ++i) ip[p[i]] = i;
        vector<int> res;
        int r = 0;
        do {
            r = nxt[ip[r]];
            res.push_back(oy[r]);
        } while (r);
        if ((int)res.size() != N) {
            cout << "NO\n";
            continue;
        }
        cout << "YES\n";
        res.pop_back();
        for (int i : res) {
            cout << x[i] << " " << y[i] << "\n";
        }
    }

}

Test details

Test 1

Group: 1, 4, 5

Verdict: ACCEPTED

input
`100 1 74 75 1 100 43 ...` view save

correct output
`YES 74 75 YES 100 43 YES ...` view save

user output
`YES 74 75 YES 100 43 YES ...` Truncated

Test 2

Group: 1, 4, 5

Verdict: ACCEPTED

input
`100 2 80 54 51 61 2 ...` view save

correct output
`YES 51 61 80 54 YES 2 64 ...` view save

user output
`YES 51 61 80 54 YES 2 64 ...` Truncated

Test 3

Group: 1, 4, 5

Verdict: ACCEPTED

input
`100 3 3 74 91 45 100 24 ...` view save

correct output
`YES 3 74 100 24 91 45 YES ...` view save

user output
`YES 3 74 100 24 91 45 YES ...` Truncated

Test 4

Group: 1, 4, 5

Verdict: ACCEPTED

input
`100 4 88 50 62 41 12 86 ...` view save

correct output
`YES 12 86 88 50 62 41 66 93 ...` view save

user output
`YES 12 86 88 50 62 41 66 93 ...` Truncated

Test 5

Group: 1, 4, 5

Verdict: ACCEPTED

input
`100 5 82 80 80 92 5 22 ...` view save

correct output
`YES 5 22 94 13 82 80 80 92 ...` view save

user output
`YES 5 22 82 80 93 91 94 13 ...` Truncated

Test 6

Group: 1, 2, 4, 5

Verdict: ACCEPTED

input
`100 5 34 38 26 30 1 6 ...` view save

correct output
`YES 1 6 12 22 26 30 34 38 ...` view save

user output
`YES 1 6 12 22 26 30 34 38 ...` Truncated

Test 7

Group: 1, 3, 4, 5

Verdict: ACCEPTED

input
`100 5 50 40 28 25 51 7 ...` view save

correct output
`YES 51 7 50 40 47 1 17 11 ...` view save

user output
`YES 28 25 51 7 47 1 17 11 ...` Truncated

Test 8

Group: 1, 4, 5

Verdict: ACCEPTED

input
`100 5 2 2 2 1 1 1 ...` view save

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

user output
`YES 1 1 2 2 2 1 2 1 ...` Truncated

Test 9

Group: 2, 4, 5

Verdict: ACCEPTED

input
`100 100 175870020 296379324 248160539 883842002 21934885 781732852 ...` view save

correct output
`NO YES 4976156 6890135 10553287 11923223 14617057 17728163 ...` view save

user output
`NO YES 4976156 6890135 10553287 11923223 14617057 17728163 ...` Truncated

Test 10

Group: 3, 4, 5

Verdict: ACCEPTED

input
`100 100 447597377 314433951 700232436 691277009 937268439 708165426 ...` view save

correct output
`YES 998963839 391778929 995772196 257222033 995754704 553123757 994629465 247775824 ...` view save

user output
`YES 80804061 58329306 400940916 299338123 712093668 563049590 879335363 246462890 ...` Truncated

Test 11

Group: 4, 5

Verdict: ACCEPTED

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

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

user output
`YES 1 2 2 1 2 1 1 2 ...` Truncated

Test 12

Group: 4, 5

Verdict: ACCEPTED

input
`100 100 7 1 6 3 10 9 ...` view save

correct output
`YES 6 7 7 8 9 10 10 10 ...` view save

user output
`YES 1 9 10 6 9 8 10 2 ...` Truncated

Test 13

Group: 4, 5

Verdict: ACCEPTED

input
`100 100 51 5 85 77 91 84 ...` view save

correct output
`YES 100 24 100 25 100 3 100 6 ...` view save

user output
`YES 14 71 95 20 55 72 95 99 ...` Truncated

Test 14

Group: 4, 5

Verdict: ACCEPTED

input
`100 100 823828194 863717310 593641073 340054211 420481158 965069109 ...` view save

correct output
`YES 999289319 634855378 996775156 433726648 983657502 55234695 981890636 112877413 ...` view save

user output
`YES 230963650 901110328 981319405 71107827 420481158 965069109 996611366 960883577 ...` Truncated

Test 15

Group: 2, 5

Verdict: ACCEPTED

input
`100 500 88724450 89315226 266915464 267648621 189301651 189661541 ...` view save

correct output
`YES 764920 1459946 1936195 2832987 3691481 4085931 4991808 5840928 ...` view save

user output
`YES 764920 1459946 1936195 2832987 3691481 4085931 4991808 5840928 ...` Truncated

Test 16

Group: 3, 5

Verdict: ACCEPTED

input
`100 500 763682761 317584504 756010800 260162861 435911339 78070399 ...` view save

correct output
`YES 998768285 3307355 998714926 628486754 997115613 820932481 993320616 554600893 ...` view save

user output
`YES 91053246 37319028 249937680 181597860 517368854 53432557 302873766 288573445 ...` Truncated

Test 17

Group: 5

Verdict: ACCEPTED

input
`100 500 2 2 2 1 1 2 ...` view save

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

user output
`YES 1 1 2 2 2 1 2 2 ...` Truncated

Test 18

Group: 5

Verdict: ACCEPTED

input
`100 500 10 6 10 10 9 10 ...` view save

correct output
`YES 2 3 3 4 4 5 5 6 ...` view save

user output
`YES 1 5 8 2 5 8 10 8 ...` Truncated

Test 19

Group: 5

Verdict: ACCEPTED

input
`100 500 85 87 89 70 70 92 ...` view save

correct output
`YES 96 97 100 67 100 10 100 97 ...` view save

user output
`YES 15 41 76 72 92 98 100 7 ...` Truncated

Test 20

Group: 5

Verdict: ACCEPTED

input
`100 500 861154169 119512584 569086662 606567153 288230434 322196278 ...` view save

correct output
`YES 999945324 969534372 999738857 240617694 999244114 722161553 999207839 557351400 ...` view save

user output
`YES 47896585 707808748 912475145 889549456 972112710 225690351 599410797 288891347 ...` Truncated

Test 21

Group: 5

Verdict: ACCEPTED

input
`100 500 116439250 401518028 280329609 193466222 674040956 209050570 ...` view save

correct output
`NO YES 773701149 773852119 987509190 315670966 977413249 510418200 ...` view save

user output
`NO YES 8245253 816690 10793688 551342050 811014411 987525150 ...` Truncated

Test 22

Group: 5

Verdict: ACCEPTED

input
`100 500 934181189 942499518 684836806 395802802 957884803 570946201 ...` view save

correct output
`YES 999772640 505132174 999111650 140844643 999028633 888134186 999020109 291046771 ...` view save

user output
`YES 24314565 937625373 988195925 444535743 778264812 550159619 833431060 847062522 ...` Truncated

Putka Open 2025 – 1/5

Järjestys

Code

Test details

Test 1

Test 2

Test 3

Test 4

Test 5

Test 6

Test 7

Test 8

Test 9

Test 10

Test 11

Test 12

Test 13

Test 14

Test 15

Test 16

Test 17

Test 18

Test 19

Test 20

Test 21

Test 22

Tasks

Submissions (ollpu)