#include<stdio.h>

int main() {
    int i, j,n;
    printf("Enter the number of rows: \n");
    scanf("%d",&n);
    for (i = 1; i <= n; i++)
    {
      for(j=1;j<=i;j++)
    {
        printf("%d",i);
    }
    printf("\n");  
       
    }
    
    return 0;
}