Submission #1234803

#	Time	Username	Problem	Language	Result	Execution time	Memory
1234803		jundi	Fancy Fence (CEOI20_fancyfence)	C++20	0 / 100	1 ms	328 KiB

fancyfence

#include <bits/stdc++.h>
using namespace std;

#define lint long long int

int mod=1e9+7;

int main(){
    int n;
    cin>>n;
    lint sum1=0;
    lint sum2=0;
    lint a;
    for(int i=0;i<n;i++){
        cin>>a;
        sum1=a;
    }
    for(int i=0;i<n;i++){
        cin>>a;
        sum2+=a;
    }
    lint sum3=((1+sum1)*(sum1))%mod;
    lint sum4=((1+sum2)*(sum2))%mod;
    //cout<<sum1<<" "<<sum2<<" "<<sum3<<" "<<sum4<<endl;
    cout<<((sum3*sum4)/4)%mod;
}

• 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