Submission #445011

#	Time	Username	Problem	Language	Result	Execution time	Memory
445011		osmanallazov	Fancy Fence (CEOI20_fancyfence)	C++14	0 / 100	1 ms	204 KiB

fancyfence

#include <bits/stdc++.h>
#define ll long long
using namespace std;
int main(){
    // SUBTASK 4---->SOLUTION
    ll n;
    ll mod=1e9+7;
    cin>>n;
    ll h[n];
    ll w[n];
    for(ll i=0;i<n;i++){
        cin>>h[i];
    }
    ll he=h[0];
    ll we=0;
    for(ll i=0;i<n;i++){
        cin>>w[i];
        we=(we+w[i])%mod;
    }
    ll q=he%mod;
    ll a=(he+1)%mod;
    ll e=((q*a)%mod)/2;
    ll b=we%mod;
    ll c=(we+1)%mod;
    ll d=((b*c)%mod)/2;
    ll res=(d*e)%mod;
    cout<<res;
}

• 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