백준 24087 アイスクリーム (Ice Cream)

https://www.acmicpc.net/problem/24087

24087번: アイスクリーム (Ice Cream)

 

from math import ceil
 
 
def sol(s, a, b):
    answer = 250
    cost = 100
    if s <= a:
        return answer
    else:
        cnt = ceil((s - a) / b)
        return answer + cnt * cost
 
 
if __name__ == '__main__':
    s = int(input())
    a = int(input())
    b = int(input())
    print(sol(s, a, b))