Submission #945097

#	Time	Username	Problem	Language	Result	Execution time	Memory
945097		AccountName	Fancy Fence (CEOI20_fancyfence)	C++14	0 / 100	1 ms	504 KiB

fancyfence

#include <bits/stdc++.h>
#define int long long
using namespace std;
 
signed main()
{
	ios_base::sync_with_stdio(false); cin.tie(NULL);
	
	int N;
	cin >> N;
	
	int h[N], w[N];
	int total_w = 0;
	for (int i = 0; i < N; i++)
	{
		cin >> h[i];
	}
	for (int i = 0; i < N; i++)
	{
		cin >> w[i];
		total_w += w[i];
	}
	
	// subtask 4
  	/*
	int answer = h[0] * (total_w * (total_w + 1)) / 2;
	//cout << answer << "\n";
	answer = answer * (total_w * h[0] * (h[0]+1)) / 2 / (total_w * h[0]);
    */
  	int answer = h[0] * total_w * (total_w + 1) * (h[0]+1) / 4;
	
	cout << answer % 1000000007;
	
	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