Ruudukko

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;

#define M 1000000007

string mp[501];
string cur[501][501];

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin >> n;


    for (int i = 0; i < n; ++i) {
        cin >> mp[i];
    }

    cur[0][0] = mp[0][0];

    for (int i = 1; i < n; ++i) {
        cur[i][0] = cur[i - 1][0] + mp[i][0];
        cur[0][i] = cur[0][i - 1] + mp[0][i];
    }

    for (int i = 1; i < n; ++i) {
        for (int j = 1; j < n; ++j) {
            cur[i][j] = (cur[i - 1][j] < cur[i][j - 1]) ? cur[i - 1][j] : cur[i][j - 1];
            cur[i][j] += mp[i][j];
            cur[i - 1][j - 1].clear();
        }
    }

    cout << cur[n - 1][n - 1] << "\n";

    return 0;
}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED

Test 10

Group: 2

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: RUNTIME ERROR

Test 12

Group: 3

Verdict: RUNTIME ERROR

Test 13

Group: 3

Verdict: RUNTIME ERROR

Test 14

Group: 3

Verdict: RUNTIME ERROR

Test 15

Group: 3

Verdict: RUNTIME ERROR