Submission #244424

#	Time	Username	Problem	Language	Result	Execution time	Memory
244424		dwsc	Calvinball championship (CEOI15_teams)	C++14	0 / 100	18 ms	8320 KiB

teams

#include <bits/stdc++.h>
#define int long long
using namespace std;
int MOD = 1e9+7;
int memo[1010][1010];
int maxi[1010];
int n;
int dp(int pos,int largest){
    if (pos == n) return 1;
    if (memo[pos][largest] != -1) return memo[pos][largest];
    int ans = (largest*dp(pos+1,largest))%MOD;
    if (maxi[pos] > largest) ans += dp(pos+1,largest+1);
    return memo[pos][largest] = ans%MOD;
}
main(){
    cin >> n;
    for (int i = 0; i < n; i++){
        int x;
        cin >> x;
        if (i == 0) maxi[i] = x;
        else maxi[i] = max(maxi[i-1],x);
    }
    for (int i = 0; i < 1010; i++) for (int j = 0; j < 1010; j++) memo[i][j] =-1;
    cout << dp(0,0);
}

Compilation message (stderr)

teams.cpp:15:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^

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