Submission

Score: 100

User: robgornpeunpadpairoundnigumaipadnea

Problemset: fireball

Language: cpp

Time: 0.003 second

Submitted On: 2025-11-22 23:31:39

#include <bits/stdc++.h>
using namespace std;

int n,m,q;
vector<vector<int>> v;
bool visitt[101][101];
int dx[] = {0,-1,1,0},dy[] = {-1,0,0,1};
int cnt = 0;

void walk(int a,int b){
    visitt[a][b] = 1;cnt++;
    v[a][b]=0;
    for(int i=0;i<4;i++){
        int cr = a + dx[i];
        int cc = b + dy[i];
        if(cr>=0&&cr<n&&cc>=0&&cc<m&&!visitt[cr][cc]&&v[cr][cc]==1){
           walk(cr,cc); 
         }
     }
}

int main(){
    ios_base::sync_with_stdio(false);cin.tie(NULL);
    cin>>n>>m>>q;
    v.resize(n,vector<int>(m));
    int all=0;
    for(int i=0;i<n;i++){
        for(int j=0;j<m;j++){
            cin>>v[i][j];
            if(v[i][j] == 1)all++;
        }
    }
    while(q--){
        int a,b;cin>>a>>b;
        a--,b--;
        if(v[a][b] == 1)walk(a,b);
        cout << all - cnt << '\n';
    }

}