Submission #1234817

#	Time	Username	Problem	Language	Result	Execution time	Memory
1234817		jundi	Fancy Fence (CEOI20_fancyfence)	C++20	15 / 100	48 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)%mod)*(sum1%mod)/2);
    lint sum4=(((1+sum2)%mod)*(sum2%mod)/2);
    //cout<<sum1<<" "<<sum2<<" "<<sum3<<" "<<sum4<<endl;
    lint ans=(sum3%mod)*(sum4%mod);
    cout<<(ans%mod);
}

• 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