Submission #244555

#	Time	Username	Problem	Language	Result	Execution time	Memory
244555		SomeoneUnknown	Calvinball championship (CEOI15_teams)	C++14	20 / 100	57 ms	65540 KiB

teams

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

int main(){
    int n;
    scanf("%d", &n);
    long long dp[n+1][n+1]; //ways to fill A slots with a previously used B
    for(int i = 0; i <= n; i++){
        dp[0][i] = 1;
    }
    for(int i = 1; i <= n; i++){
        for(int j = 0; j <= n-i; j++){
            dp[i][j] = dp[i-1][j+1] + (j * dp[i-1][j]);
            dp[i][j] %= 1000000007;
        }
    }
    long long tal = 1;
    int hsf = 0;
    for(int i = 1; i <= n; i++){
        int x;
        scanf("%d", &x);
        tal += dp[n-i][hsf] * (x-1);
        tal %= 1000000007;
        hsf = max(hsf, x);
    }
    printf("%lld", tal);
}

Compilation message (stderr)

teams.cpp: In function 'int main()':
teams.cpp:6:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
teams.cpp:21:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &x);
         ~~~~~^~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10