1512B.cpp

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

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int t;
    cin >> t;
    while (t--)
    {
        int n;cin>>n;
        char grid[n][n];
        pair<int,int> pos1={-1,-1},pos2;
        for(int i=0;i<n;i++) {
            for(int j=0;j<n;j++) {
                cin>>grid[i][j];
                if(grid[i][j]=='*') {
                    if(pos1.first==-1) pos1={i,j};
                    else pos2={i,j};
                }
            }
        }
        if(pos1.first==pos2.first) {
            if(pos1.first-1 >=0) {
                grid[pos1.first-1][pos1.second] = '*';
                grid[pos2.first-1][pos2.second] = '*';
            } else {
                grid[pos1.first+1][pos1.second] = '*';
                grid[pos2.first+1][pos2.second] = '*';
            }
        }else if(pos1.second==pos2.second) {
            if(pos1.second-1 >=0) {
                grid[pos1.first][pos1.second-1] = '*';
                grid[pos2.first][pos2.second-1] = '*';
            } else {
                grid[pos1.first][pos1.second+1] = '*';
                grid[pos2.first][pos2.second+1] = '*';
            }
        }else {
            grid[pos1.first][pos2.second] =  '*';
            grid[pos2.first][pos1.second] =  '*';
        }
        for(int i=0;i<n;i++) {
            for(int j=0;j<n;j++) {
                cout<<grid[i][j];
            }
            cout<<'\n';
        }
    }
    return 0;
}