1. 1계단 #

1.1. 거스름 돈 #

72 http://220.81.36.44/30stair/change/change.php?pname=change 거스름 돈

2. 2계단 #

2.1. 분수 크기 비교 #

2.2. 윤년 #

2.3. 중위수 #

2.4. 삼각형 성립 조건 #

72 http://220.81.36.44/judgeonline/sts.php?pname=tri&sort=2

http://220.81.36.44/30stair/ft/ft.php?pname=ft
116 -> 115

e,s,d,c;main(a){for(e=scanf("%d",&a);d++<a;)a%d?:(++c,s+=d,e*=d,printf("%d ",d));printf("\n%d\n%d\n%d",c,s,e&0xf);