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

bool row[15], col[15], udp[100],fudp[100];
int n;
char mp[15][15];

void dfs(int r){
    if(r > n){
        for(int i = 1; i <= n; i++){
            for (int j = 1; j <= n; j ++ ){
                cout << mp[i][j];
            }
            cout << endl;
        }
        cout << endl;
    }

    for (int i = 1; i <= n; i ++ ){
        if(col[i] || udp[r-i+n] || fudp[r+i])continue;
        col[i] = udp[r-i+n] = fudp[r+i] = 1;
        mp[r][i] = 'Q';
        dfs(r+1);
        mp[r][i] = '.';
        col[i] = udp[r-i+n] = fudp[r+i] = 0;

    }
}

int main()
{
    cin >> n;
    memset(row, 0, sizeof row);
    memset(col, 0, sizeof col);
    memset(udp, 0, sizeof udp);
    memset(fudp, 0, sizeof fudp);
    memset(mp, '.', sizeof mp);
    dfs(1);
    return 0;
}