Submission #1358403

#	Time	Username	Problem	Language	Result	Execution time	Memory
1358403		ffeyyaae_	Fancy Fence (CEOI20_fancyfence)	C++20	0 / 100	0 ms	344 KiB

fancyfence

#include <bits/stdc++.h>

using namespace std;

const int N = 1e5+5;
const int mod = 1e9+7;

int n;
int h[N], w[N];

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin >> n;
    for(int i=0;i<n;i++) cin >> h[i];
    int sum=0;
    for(int i=0;i<n;i++)
    {
        cin >> w[i];
        sum = (sum+w[i])%mod;
    }
    int x = ((h[0]*(h[0]+1))/2)%mod;
    int y = ((sum*(sum+1))/2)%mod;
    cout << x*y%mod << "\n";
    return 0;
}

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