Submission #921466

#	Time	Username	Problem	Language	Result	Execution time	Memory
921466		Alebn	Fancy Fence (CEOI20_fancyfence)	C++14	15 / 100	61 ms	3924 KiB

fancyfence

#include <bits/stdc++.h>
#define int long long
 
using namespace std;
 
const int MOD = 1e9+7, INV = 250000002;
 
int calc(int n, int m) {
    return n*m%MOD*(n+1)%MOD*(m+1)%MOD*INV%MOD;
}
 
signed main() {
    int n;
    cin >> n;
    vector<int> h(n), w(n);
    int sum = 0;
    for(int i = 0; i < n; i++) cin >> h[i];
    for(int i = 0; i < n; i++) {
        cin >> w[i];
        sum = (sum + w[i]) % MOD;
    }
    cout << calc(h[0], sum) << "\n";
}

• 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