ABC193 - Atcoder/Python精進のための解説メモ

a, b = map(int, read().split())
print((1 - b / a) * 100)

n = int(input())
ans = 10 ** 9
for _ in range(n):
    a, p, x = map(int, input().split())
    if x - a <= 0:
        continue
    ans = min(p, ans)
print(-1 if ans == 10 ** 9 else ans)

import math
n = int(input())
s = set()
for a in range(2, int(math.sqrt(n)) + 1):
    tmp = a * a
    while tmp <= n:
        s.add(tmp)
        tmp *= a
print(n - len(s))

まだ解いてません