제출 #906414

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
906414		Ludissey	Fancy Fence (CEOI20_fancyfence)	C++14	0 / 100	1 ms	348 KiB

fancyfence

#include <bits/stdc++.h>
using namespace std;
#define int long long
 
int n,m;
int mod=1e9+7;
int clc(int x) { return (((x*(x+1))%mod)/2); }
signed main() {
    ios::sync_with_stdio(false); cin.tie(nullptr);
    cin >> n;
    int H;
    int width=0;
    for (int i = 0; i < n; i++) cin >> H;
    for (int i = 0; i < n; i++) {
        int x; cin >> x;
        width+=x;
        width%=mod;
    }
    cout << (clc(width)*clc(H))%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