Submission #944801

#	Time	Username	Problem	Language	Result	Execution time	Memory
944801		ys2	Fancy Fence (CEOI20_fancyfence)	C++14	0 / 100	76 ms	2648 KiB

fancyfence

#include <bits/stdc++.h>
using namespace std;
#define int long long
int n, h[1000001], w[1000001], ans, mod=(10e9)+7;
signed main(){
	cin.tie(0);
	ios_base::sync_with_stdio(0);
	cin>>n;
	for (int i=0; i<n; i++){
		cin>>h[i];
	}
	for (int i=0; i<n; i++){
		cin>>w[i];
	}
	for (int i=1; i<=h[0]; i++){
		ans+=i;
	}
	if (w[0]!=1){
	ans+=h[0]*3*(w[0]-1)-1;
	ans%=mod;
}
	for (int i=1; i<n; i++){
		ans+=3*w[i]*h[i]-1;
		ans%=mod;
	}
	cout<<ans;	
	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