#include <stdio.h>

int main(void) {
	int n;
    printf("Enter the number of rows: \n");
    scanf("%d",&n);

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