题解 | 扫雷

#include <iostream>
#include<vector>
using namespace std;

int main() {
    int n,m;
    cin>>n>>m;
    vector<vector<char>>a(n+2,vector<char>(m+2));
    vector<vector<char>>b(n+2,vector<char>(m+2,'0'));
    for(int i=1;i<=n;i++){
        for(int j=1;j<=m;j++){
            cin>>a[i][j];
            if(a[i][j]=='*')b[i][j]='*';
        }
    }
    for(int i=1;i<=n;i++){
        for(int j=1;j<=m;j++){
            if(a[i-1][j-1]=='*'&&a[i][j]!='*')b[i][j]++;
            if(a[i][j-1]=='*'&&a[i][j]!='*')b[i][j]++;
            if(a[i+1][j-1]=='*'&&a[i][j]!='*')b[i][j]++;
            if(a[i-1][j]=='*'&&a[i][j]!='*')b[i][j]++;
            if(a[i+1][j]=='*'&&a[i][j]!='*')b[i][j]++;
            if(a[i-1][j+1]=='*'&&a[i][j]!='*')b[i][j]++;
            if(a[i][j+1]=='*'&&a[i][j]!='*')b[i][j]++;
            if(a[i+1][j+1]=='*'&&a[i][j]!='*')b[i][j]++;
        }
    }
    for(int i=1;i<=n;i++){
        for(int j=1;j<=m;j++){
            cout<<b[i][j];
        }
        cout<<endl;
    }
}
// 64 位输出请用 printf("%lld")