oj.uz

Submission #1053339

# Submission time Handle Problem Language Result Execution time Memory
1053339 2024-08-11T10:39:58 Z Piokemon Furniture (JOI20_furniture) C++17
100 / 100
 138 ms 5460 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;

constexpr int N = 1000;
bool blok[N+9][N+9];
bool dasie[N+9][N+9];
bool dasie2[N+9][N+9];
int cnt[2*N+9];

void zab(int x, int y){
    if (!blok[x][y]) cnt[x+y]--;
    blok[x][y]=1;dasie[x][y]=0;dasie2[x][y]=0;
    if (!blok[x+1][y] && dasie[x+1][y]){
        if (blok[x+1][y-1]){dasie[x+1][y]=0;zab(x+1,y);}
    }
    if (!blok[x][y+1] && dasie[x][y+1]){
        if (blok[x-1][y+1]){dasie[x][y+1]=0;zab(x,y+1);}
    }
    if (!blok[x][y-1] && dasie2[x][y-1]){
        if (blok[x+1][y-1]){dasie2[x][y-1]=0;zab(x,y-1);}
    }
    if (!blok[x-1][y] && dasie2[x-1][y]){
        if (blok[x-1][y+1]) {dasie2[x-1][y]=0;zab(x-1,y);}
    }
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n,m;
    cin >> n >> m;
    for (int x=1;x<=n;x++){
        for (int y=1;y<=m;y++){
            cin >> blok[x][y];
        }
    }
    for (int x=0;x<=max(n,m);x++){
        blok[0][x]=1;blok[x][0]=1;
        blok[n+1][x]=1;blok[x][m+1]=1;
    }
    dasie[1][1]=1;
    for (int x=1;x<=n;x++){
        for (int y=1;y<=m;y++){
            if (blok[x][y])continue;
            if (dasie[x][y]){
                if (!blok[x+1][y])dasie[x+1][y]=1;
                if (!blok[x][y+1])dasie[x][y+1]=1;
            }
        }
    }
    dasie2[n][m]=1;
    for (int x=n;x>=1;x--){
        for (int y=m;y>=1;y--){
            if (blok[x][y])continue;
            if (dasie2[x][y]){
                if (!blok[x-1][y])dasie2[x-1][y]=1;
                if (!blok[x][y-1])dasie2[x][y-1]=1;
            }
        }
    }
    for (int x=1;x<=n;x++){
        for (int y=1;y<=m;y++){
            if (dasie[x][y] && dasie2[x][y])cnt[x+y]++;
            else blok[x][y]=1;
        }
    }
    int q,a,b;
    cin >> q;
    while(q--){
        cin >> a >> b;
        if (!dasie[a][b] || !dasie2[a][b]){
            zab(a,b);
            blok[a][b]=1;
            cout << "1\n";
            continue;
        }
        if (cnt[a+b]==1){
            cout << "0\n";
            continue;
        }
        zab(a,b);
        blok[a][b]=1;
        cout << "1\n";
        /*for (int x=1;x<=n;x++){
            for (int y=1;y<=m;y++){
                cout << blok[x][y] << ' ';
            }
            cout << '\n';
        }
        cout << "\n\n";*/
    }
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2648 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 2 ms 2392 KB Output is correct
6 Correct 2 ms 2392 KB Output is correct
7 Correct 2 ms 2392 KB Output is correct
8 Correct 2 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct

Subtask #2
95.0 / 95.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2648 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 2 ms 2392 KB Output is correct
6 Correct 2 ms 2392 KB Output is correct
7 Correct 2 ms 2392 KB Output is correct
8 Correct 2 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 7 ms 3160 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 70 ms 3908 KB Output is correct
13 Correct 35 ms 3412 KB Output is correct
14 Correct 112 ms 5008 KB Output is correct
15 Correct 111 ms 4948 KB Output is correct
16 Correct 118 ms 5116 KB Output is correct
17 Correct 126 ms 5204 KB Output is correct
18 Correct 126 ms 5204 KB Output is correct
19 Correct 138 ms 5456 KB Output is correct
20 Correct 120 ms 5456 KB Output is correct
21 Correct 126 ms 5460 KB Output is correct