CSES - Datatähti 2025 alku - Results
Submission details
Task:Niitty
Sender:PMak
Submission time:2024-11-03 15:59:42 +0200
Language:C++ (C++17)
Status:READY
Result:0
Feedback
groupverdictscore
#10
#20
#30
#40
#50
#60
Test results
testverdicttimegroup
#10.00 s1, 2, 3, 4, 5, 6details
#2ACCEPTED0.00 s1, 2, 3, 4, 5, 6details
#30.00 s1, 2, 3, 4, 5, 6details
#4ACCEPTED0.00 s1, 2, 3, 4, 5, 6details
#50.00 s1, 2, 3, 4, 5, 6details
#60.00 s2, 3, 4, 5, 6details
#7ACCEPTED0.01 s2, 3, 4, 5, 6details
#80.00 s2, 3, 4, 5, 6details
#9ACCEPTED0.00 s2, 3, 4, 5, 6details
#100.01 s3, 4, 5, 6details
#11ACCEPTED0.03 s3, 4, 5, 6details
#120.00 s3, 4, 5, 6details
#13ACCEPTED0.01 s3, 4, 5, 6details
#140.01 s4, 5, 6details
#15ACCEPTED0.16 s4, 5, 6details
#160.01 s4, 5, 6details
#17ACCEPTED0.23 s4, 5, 6details
#180.04 s5, 6details
#19ACCEPTED0.85 s5, 6details
#200.02 s5, 6details
#21--5, 6details
#220.33 s6details
#23--6details
#240.25 s6details
#25--6details

Compiler report

input/code.cpp:22:19: warning: use of 'auto' in parameter declaration only available with '-std=c++20' or '-fconcepts'
   22 | void print(vector<auto> v) {
      |                   ^~~~

Code

#include <bits/stdc++.h>

#define F0R(i, n) for (i=0; i<n; i++)
#define FOR(i, from, to) for (i = from; i < to; i++)
#define R0F(n) for (int i = n; i>=0; --i)
#define ROF(from, to) for (int i = from; i >= to; --i)

#define ll long long
#define mod (int) (1e9 + 7)
#define vi vector<int>
#define vll vector<ll>
#define vc vector<char>
#define pii pair<int, int>
#define pci pair<char, int>
#define pll pair<ll, ll>
#define YES cout << "YES\n";
#define NO cout << "NO\n";
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
using namespace std;

void print(vector<auto> v) {
	for (auto it = v.begin(); it != v.end(); ++it)
		cout << *it << " ";
	cout << "\n";
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int n, i, j, k, a, b;
    ll ans = 0ll;
    char t;
    cin >> n;
    vector<vi> grid(n, vi(n, 0));

    set<int> chars;
    map<char, int> mp;
    int alphabets = 0;
    F0R(i, n) {
        F0R (j, n) {
            cin >> t;
            if (mp.find(t) != mp.end())
                grid[i][j] = mp[t];
            else {
                mp[t] = alphabets;
                grid[i][j] = alphabets++;
                chars.insert(alphabets);
            }
        }
    }
    // for (auto v : grid)
    //    print(v);

    vector<vector<vi>> dp(n, vector<vi>(n, vi(alphabets, 0)));
    vector<vi> order(n, vi(n, 1e9));

    F0R (i, n) {
        F0R (j, n) {
            F0R (k, alphabets) {
                if (i == 0 && j == 0) {
                    dp[i][j][k] = (grid[i][j] == k);
                }
                else if (i == 0) {
                    dp[i][j][k] = dp[i][j-1][k] + (grid[i][j] == k);
                }
                else if (j == 0) {
                    dp[i][j][k] = dp[i-1][j][k] + (grid[i][j] == k);
                }
                else {
                    dp[i][j][k] = dp[i-1][j][k] + dp[i][j-1][k] - dp[i-1][j-1][k] + (grid[i][j] == k);
                }
            }
            for (int x : dp[i][j]) order[i][j] = min(x, order[i][j]);
            // printf("(%d, %d), A=%d, K=%d, B=%d\n", i, j, dp[i][j][0], dp[i][j][1], dp[i][j][2]);

        }
    }

    // for (auto v : order)
    //    print(v);

    bool all = false; int max_b = n;
    vi c(alphabets, 0);
    F0R (i, n) {
        F0R (j, n) {
            max_b = n;
            FOR (a, i, n) {
                FOR (b, j, max_b) {
                    if (order[a][b]-order[i][j] <= 0)
                        continue;
                    fill(c.begin(), c.end(), 0);
                    all = true;
                    if (i == 0 && j == 0) {
                        F0R (k, alphabets)
                            c[k] = dp[a][b][k];
                    }
                    else if (i == 0) {
                        F0R (k, alphabets)
                            c[k] = dp[a][b][k] - dp[a][j-1][k];
                    }
                    else if (j == 0) {
                        F0R (k, alphabets)
                         c[k] = dp[a][b][k] - dp[i-1][b][k];
                    }
                    else {
                        F0R (k, alphabets) {
                            c[k] = dp[a][b][k] - (dp[i-1][b][k] + dp[a][j-1][k] - dp[i-1][j-1][k]);
                        }
                    }
                    // print(c);
                    F0R (k, alphabets) {
                        if (c[k] <= 0) {
                            all = false;
                            break;
                        }
                    }
                    if (all) {
                        // printf("i=%d, j=%d, a=%d, b=%d, ans += %d\n", i, j, a, b, (n-a)*(max_b-b));
                        ans += (max_b-b)*(n-a);
                        max_b = b;
                        break;
                    }
                }
            }
        }
    }
    cout << ans;
    return 0;
}

Test details

Test 1

Group: 1, 2, 3, 4, 5, 6

Verdict:

input
10
TNCTNPNTPC
NPPNTNTPTP
NTNTTCNTCT
NPCPNPPNTT
...

correct output
2035

user output
2034

Test 2

Group: 1, 2, 3, 4, 5, 6

Verdict: ACCEPTED

input
10
NFWQLWNWYS
DZOQJVXFPJ
CNHXPXMCQD
QRTBVNLTQC
...

correct output
9

user output
9

Test 3

Group: 1, 2, 3, 4, 5, 6

Verdict:

input
10
XXXXXXXXXX
XXXXXXXXXX
XXXXXXXXXX
XXXXXXXXXX
...

correct output
3025

user output
2925

Test 4

Group: 1, 2, 3, 4, 5, 6

Verdict: ACCEPTED

input
10
FFFFFFFFFF
FFFFFCFFFF
FFFFFFJFFF
FFFFFFFFFF
...

correct output
12

user output
12

Test 5

Group: 1, 2, 3, 4, 5, 6

Verdict:

input
1
X

correct output
1

user output
0

Test 6

Group: 2, 3, 4, 5, 6

Verdict:

input
20
BBCBUBOUOBBCUUBBCOUO
BOUCOOCUBCOOOCOBOCUO
UCCUUUOBCOCBCBUBUCOO
BUOBUCUCUOOBCOOUBUOO
...

correct output
38724

user output
38722

Test 7

Group: 2, 3, 4, 5, 6

Verdict: ACCEPTED

input
20
CBGLSHGZHYZDWBNDBJUG
SMUXOJQYPXZDTMJUIWOJ
XIDSTNBGHKRKOVUVMINB
MTQGCFRUHQKALXRNCQGS
...

correct output
8334

user output
8334

Test 8

Group: 2, 3, 4, 5, 6

Verdict:

input
20
KKKKKKKKKKKKKKKKKKKK
KKKKKKKKKKKKKKKKKKKK
KKKKKKKKKKKKKKKKKKKK
KKKKKKKKKKKKKKKKKKKK
...

correct output
44100

user output
43700

Test 9

Group: 2, 3, 4, 5, 6

Verdict: ACCEPTED

input
20
AAAAAAAAXAAAAAAAAAAA
AAAWAAAAAAAAAAAAAOAA
AAAAAAAAAAAAAAAAAPAA
AAAAAAAAKAAAAAAAAAAZ
...

correct output
18

user output
18

Test 10

Group: 3, 4, 5, 6

Verdict:

input
50
GRGREEEGREGXRXXEGXXREXGRRRGRRR...

correct output
1584665

user output
1584644

Test 11

Group: 3, 4, 5, 6

Verdict: ACCEPTED

input
50
AITIISJUHCCRZNKSDCNQKYSQRINFWJ...

correct output
1077746

user output
1077746

Test 12

Group: 3, 4, 5, 6

Verdict:

input
50
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOO...

correct output
1625625

user output
1623125

Test 13

Group: 3, 4, 5, 6

Verdict: ACCEPTED

input
50
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFF...

correct output
1680

user output
1680

Test 14

Group: 4, 5, 6

Verdict:

input
100
NNCMDCDDCCNNNDNCMMNCDCDCCDCDNM...

correct output
25325366

user output
25325289

Test 15

Group: 4, 5, 6

Verdict: ACCEPTED

input
100
LIMQQIHASECROEVILNVULGWZJPPKOG...

correct output
22342463

user output
22342463

Test 16

Group: 4, 5, 6

Verdict:

input
100
TTTTTTTTTTTTTTTTTTTTTTTTTTTTTT...

correct output
25502500

user output
25492500

Test 17

Group: 4, 5, 6

Verdict: ACCEPTED

input
100
QXQQQQQQQQQQQQQQQQQQQQQQQQQQQQ...

correct output
25650

user output
25650

Test 18

Group: 5, 6

Verdict:

input
200
NAANANMMKNKKAKMKMAKNKMNKMMNNAA...

correct output
403292767

user output
403292649

Test 19

Group: 5, 6

Verdict: ACCEPTED

input
200
OMYWATTLURKQPTKEFMGGYAOONXWVSC...

correct output
388111321

user output
388111321

Test 20

Group: 5, 6

Verdict:

input
200
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC...

correct output
404010000

user output
403970000

Test 21

Group: 5, 6

Verdict:

input
200
LLLLLLLLLLLLLLLLLHLLLLLLLLLLLL...

correct output
14159445

user output
(empty)

Test 22

Group: 6

Verdict:

input
500
VVHWVUHVHUWWWVUUUWVUUHUUWHWUVW...

correct output
15683003812

user output
15683003527

Test 23

Group: 6

Verdict:

input
500
OIMZGEQSBMBDSDXSWRFNKSGFEBBTJE...

correct output
15575906951

user output
(empty)

Test 24

Group: 6

Verdict:

input
500
IIIIIIIIIIIIIIIIIIIIIIIIIIIIII...

correct output
15687562500

user output
15687312500

Test 25

Group: 6

Verdict:

input
500
WWWWWWWWWWWWWWWWWWWWWWWWWWWWWW...

correct output
3058970930

user output
(empty)