X0

#include <iostream>
#include <vector>

using namespace std;

int main()
{
    vector<vector<int>> vec(3,vector<int> (3,-1));
    int player=1, x, y;
    for(int hod=0;hod<9;hod++){
        player=hod%2;
        cin >> x >> y;
        vec[y-1][x-1]=player;
        for(int i=0;i<3;i++){
            for(int k=0;k<3;k++){
                if(vec[i][k]==-1){cout << ".\t";}
                if(vec[i][k]==0){cout << "X\t";}
                if(vec[i][k]==1){cout << "O\t";}}
            cout << endl << endl << endl;
        }
    }
    return 0;
}