Submission #946124

#	Time	Username	Problem	Language	Result	Execution time	Memory
946124		kokoxuya	Fancy Fence (CEOI20_fancyfence)	C++14	15 / 100	56 ms	1616 KiB

fancyfence

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define moddy 1000000007

signed main()
{
	int N,temp1,temp2,zong = 0;
	cin >> N;
	
	for (int a = 1; a <= N; a++)
	{
		cin >> temp1;
	}
	temp1 = temp1 % moddy;
	for (int a = 1; a <= N; a++)
	{
		cin >> temp2;
		zong += temp2;
		zong %= moddy;
	}
	
	int ans = (zong + 1) * zong / 2;
	ans %= moddy;
	//cout << "before : " << ans  << "\n";
	//cout <<  temp1 << " and " << (temp1 * (temp1 + 1)/2) << "\n";
	int temp3 = (temp1 * (temp1 + 1)/2);
	temp3 %= moddy;
	ans = ans * temp3;
	cout << (ans % moddy);
}

• 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