Submission #1104126

#	Time	Username	Problem	Language	Result	Execution time	Memory
1104126		ezzzay	Fancy Fence (CEOI20_fancyfence)	C++14	12 / 100	92 ms	57316 KiB

fancyfence

#include<bits/stdc++.h>
using namespace std;
#define ff first
#define ss second
#define pb push_back
const int N=3e5+5;
int h[N];
int w[N];
bool arr[5000][5000];
int ps[5000][5000];
signed main(){
    int n;
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>h[i];
    }
    for(int i=1;i<=n;i++){
        cin>>w[i];
    }
    int x=0;
    for(int i=1;i<=n;i++){
        for(int j=1;j<=w[i];j++){
            for(int k=1;k<=h[i];k++){
                arr[k][x+j]=1;
            }
        }
        x+=w[i];
    }
    for(int i=1;i<=50;i++){
        for(int j=1;j<=50;j++){
            ps[i][j]=ps[i-1][j]+ps[i][j-1]-ps[i-1][j-1]+arr[i][j];
        }
    }
    int ans=0;
    for(int i=1;i<=50;i++){
        for(int j=i;j<=50;j++){
            for(int l=1;l<=50;l++){
                for(int r=l;r<=50;r++){
                    int a=ps[r][j]-ps[r][i-1]-ps[l-1][j]+ps[l-1][i-1];
                    if(a==(j-i+1)*(r-l+1))ans++;
                }
            }
        }
    }
    cout<<ans;
    
}

• Subtask 1: 0 / 0
• Subtask 2: 12 / 12
• Subtask 3: 0 / 13
• Subtask 4: 0 / 15
• Subtask 5: 0 / 15
• Subtask 6: 0 / 18
• Subtask 7: 0 / 27