oj.uz

Submission #684097

# Submission time Handle Problem Language Result Execution time Memory
684097 2023-01-20T11:05:37 Z Darren0724 Furniture (JOI20_furniture) C++17
100 / 100
 296 ms 6332 KB 
#include<bits/stdc++.h>
using namespace std;
#define endl '\n'
vector<int> cnt(2050);
vector<vector<int>> v;
void dfs(int a,int b){
    v[a][b]=1;
    cnt[a+b]--;
    if(v[a-1][b+1]){
        if(v[a][b+1]==0){
            dfs(a,b+1);
        }
        if(v[a-1][b]==0){
            dfs(a-1,b);
        }
    }
    if(v[a+1][b-1]){
        if(v[a+1][b]==0){
            dfs(a+1,b);
        }
        if(v[a][b-1]==0){
            dfs(a,b-1);
        }
    }
}
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n,m;cin>>n>>m;
    v.resize(n+2,vector<int>(m+2,1));
    for(int i=1;i<=n;i++){
        for(int j=1;j<=m;j++){
            cnt[i+j]++;
            v[i][j]=0;
        }
    }
    for(int i=1;i<=n;i++){
        for(int j=1;j<=m;j++){
            int p;cin>>p;
            if(p==1){
                if(v[i][j]==0){
                    dfs(i,j);
                }
            }
        }
    }
    int q;cin>>q;
    for(int i=0;i<q;i++){
        int a,b;cin>>a>>b;
        if(v[a][b]==1){
            cout<<1<<endl;
            continue;
        }
        if(cnt[a+b]<=1){
            cout<<0<<endl;
        }
        else{
            cout<<1<<endl;
            dfs(a,b);
        }

    }
    /*
    for(int i=1;i<=n;i++){
        for(int j=1;j<=m;j++){
            cout<<v[i][j]<<' ';
        }
        cout<<endl;
    }
    */

    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 2 ms 340 KB Output is correct
5 Correct 2 ms 340 KB Output is correct
6 Correct 3 ms 340 KB Output is correct
7 Correct 4 ms 340 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 2 ms 340 KB Output is correct

Subtask #2
95.0 / 95.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 2 ms 340 KB Output is correct
5 Correct 2 ms 340 KB Output is correct
6 Correct 3 ms 340 KB Output is correct
7 Correct 4 ms 340 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 2 ms 340 KB Output is correct
10 Correct 7 ms 596 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 116 ms 4716 KB Output is correct
13 Correct 46 ms 3868 KB Output is correct
14 Correct 207 ms 5532 KB Output is correct
15 Correct 206 ms 5348 KB Output is correct
16 Correct 225 ms 5836 KB Output is correct
17 Correct 235 ms 6208 KB Output is correct
18 Correct 296 ms 5992 KB Output is correct
19 Correct 239 ms 6288 KB Output is correct
20 Correct 252 ms 6312 KB Output is correct
21 Correct 242 ms 6332 KB Output is correct