#include<stdio.h> //菜逼到此一游 int main(){ int a,i,j,k; int s[20]={1,2,3,4,5,7,8,9,10,11,12,13,14,15,16,17,18,19,20}; while(scanf("%d",&a)!=EOF){ for(i=0;i<a;i++){ for(j=0;j<=i;j++){ printf("%d ",s[j]); } printf("\n"); } } }