Submission #628687

#	Time	Username	Problem	Language	Result	Execution time	Memory
628687		a_aguilo	Fancy Fence (CEOI20_fancyfence)	C++14	15 / 100	96 ms	476 KiB

fancyfence

#include<bits/stdc++.h>

using namespace std;

int MOD = 1e9 + 7;

int main(){
    int n, h, w;
    cin >> n;
    long long int H = 0;
    for(int i = 0; i < n; ++i){
        cin >> H;
    }
    long long int W = 0;
    for(int i = 0; i < n; ++i){
        cin >> w;
        W += w;
        W%=MOD;
    }
    long long chooseh = (H*(H+1)/2)%MOD;
    long long choosew = (W*(W+1)/2)%MOD;
    cout << (chooseh*choosew)%MOD << endl;
    return 0;
}

Compilation message (stderr)

fancyfence.cpp: In function 'int main()':
fancyfence.cpp:8:12: warning: unused variable 'h' [-Wunused-variable]
    8 |     int n, h, w;
      |            ^

• Subtask 1: 0 / 0
• Subtask 2: 0 / 12
• Subtask 3: 0 / 13
• Subtask 4: 15 / 15
• Subtask 5: 0 / 15
• Subtask 6: 0 / 18
• Subtask 7: 0 / 27