#include <stdio.h>

int main(void) {
    int b,i=0;
    scanf("%d",&b);
    while(i <= b){
        int a = 0;
         while(a <= i){
             printf("%d",a);
             a = a+1;
         }
         printf("\n");
         i = i+1;
    }
	return 0;
}