@alexmakvellys
#include <iostream>
#include <cstdlib>
using namespace std;const int W=10,H=20;char b[H][W];int main(){srand(time(0));for(;;){int c=rand()%W,r=H-1;while(r>=0&&b[r--][c]!=' ');b[++r][c]='#';for(int i=0;i<H;++i,cout<<endl)for(int j=0;j<W;++j)cout<<b[i][j]<<' ';}}