PROG-T1001: Brick

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

const int N = 19;

char board[N + 1][N + 2];
int mn[N + 1];

int main(){

    int row, col;
    scanf("%d%d", &row, &col);
    for(int j = 1; j <= col; ++j){
        mn[j] = row + 1;
    }
    for(int i = 1; i <= row; ++i){
        for(int j = 1; j <= col; ++j){
            scanf(" %c", &board[i][j]);
            if(board[i][j] == 'O'){
                mn[j] = min(mn[j], i);
            }
        }
    }
    for(int j = 1; j <= col; ++j){
        int cnt;
        scanf("%d", &cnt);
        for(int i = mn[j] - 1; i >= mn[j] - cnt; --i){
            board[i][j] = '#';
        }
    }
    for(int i = 1; i <= row; ++i){
        for(int j = 1; j <= col; ++j){
            cout << board[i][j];
        }
        cout << '\n';
    }

    return 0;
}