백준 1065 (파이썬)

1.문제

https://www.acmicpc.net/problem/1065

2.코드

def han(n):
    cnt = 0
    for i in range(1,n+1):
        num = list(map(int,str(i)))
        if i < 100:
            cnt += 1
        elif num[0]-num[1] == num[1]-num[2]:
            cnt += 1
    return cnt
n=int(input())
print(han(n))

3.코드해설