제출 #1125694

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1125694		EfeBabagil	Fancy Fence (CEOI20_fancyfence)	C++20	0 / 100	1 ms	324 KiB

fancyfence

#include <bits/stdc++.h>
#include <stdio.h>
using namespace std;
#define int long long
int mod=1e9+7;
int32_t main()
{
    int n;
    cin>>n;
    vector<pair<int,int>> fences(n);
    int ans=0;
    for(int i=0;i<n;i++)
    {
        cin>>fences[i].first;
        
    }
    int sum=0;
    for(int i=0;i<n;i++)
    {
        cin>>fences[i].second;
        sum=(sum+fences[i].second)%mod;
        
    }
    int col;
    col=(((sum+1)*sum)/2)%mod;
    ans+=col;
    int x=0;
    for(int i=0;i<n;i++)
    {
        if(fences[i].first==2)
        {
            x=(fences[i].second+x)%mod;
        }
        if(fences[i].first==1)
        {
            
            ans+=(((x+1)*x))%mod;
            x=0;
        }
    }
    ans+=(((x+1)*x))%mod;
    cout<<ans;
    return 0;
}

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• Subtask 3: 0 / 13
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