Submission #1260423

#	Time	Username	Problem	Language	Result	Execution time	Memory
1260423		kawhiet	Trener (COCI20_trener)	C++20	110 / 110	555 ms	5816 KiB

trener

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

const int mod = 1e9 + 7;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n, k;
    cin >> n >> k;
    vector<vector<string>> a(n, vector<string>(k));
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < k; j++) {
            cin >> a[i][j];
        }
    }
    vector<vector<int>> dp(n, vector<int>(k));
    fill(dp[0].begin(), dp[0].end(), 1);
    for (int i = 1; i < n; i++) {
        for (int j = 0; j < k; j++) {
            string s1 = a[i][j].substr(0, i);
            string s2 = a[i][j].substr(1, i);
            for (int r = 0; r < k; r++) {
                if (a[i - 1][r] == s1 || a[i - 1][r] == s2) {
                    dp[i][j] = (dp[i][j] + dp[i - 1][r]) % mod;
                }
            }
        }
    }
    int res = 0;
    for (int i = 0; i < k; i++) {
        res = (res + dp[n - 1][i]) % mod;
    }
    cout << res << '\n';
    return 0;
}

• Subtask 1: 22 / 22
• Subtask 2: 33 / 33
• Subtask 3: 55 / 55