Submission #794578

#	Time	Username	Problem	Language	Result	Execution time	Memory
794578		vjudge1	Misspelling (JOI22_misspelling)	C++17	28 / 100	47 ms	524 KiB

misspelling

#include<bits/stdc++.h>

using namespace std;
using ll = long long;

const int N = 210;
const int MOD = 1e9 + 7;

int grt[N] = {}, sml[N] = {};

ll dp[N][26];

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    int n, m;
    cin >> n >> m;
    for(int i = 0; i < m; i++) {
        int a, b;
        cin >> a >> b;
        if(a < b) {
            grt[a] = max(grt[a], b);
        } else {
            sml[b] = max(sml[b], a);
        }
    }
    for(int c = 0; c < 26; c++)
        dp[1][c] = 1;
    for(int i = 2; i <= n; i++) {
        for(int c = 0; c < 26; c++) {
            dp[i][c] = 0;
            int sm = 0, gr = 0;
            for(int k = i - 1; k >= 1; k--) {
                sm = max(sm, sml[k]);
                gr = max(gr, grt[k]);
                if(sm >= i && gr >= i) break;
                for(int d = 0; d < 26; d++) {
                    if(d == c) continue;
                    if(sm >= i) {
                        if(d < c) {
                            dp[i][c] += dp[k][d];
                            dp[i][c] %= MOD;
                        }
                    } else {
                        if(gr < i || d > c){
                            dp[i][c] += dp[k][d];
                            dp[i][c] %= MOD;
                        }
                    }
                }
            }
        }
    }
    ll ans = 0;
    for(int i = 1; i <= n; i++) {
        for(int c = 0;c < 26; c++) {
            ans += dp[i][c];
            ans %= MOD;
        }
    }
    cout << ans;
}

• Subtask 1: 8 / 8
• Subtask 2: 20 / 20
• Subtask 3: 0 / 29
• Subtask 4: 0 / 32
• Subtask 5: 0 / 11