ABC169 C - Multiplication 3
https://atcoder.jp/contests/abc169/tasks/abc169_c
提出
code: python
import math
a, b = input().split()
print(math.floor(int(a) * (float(b) * 100) // 100))
解答
code: python
from math import floor
from fractions import Fraction
a, b = input().split()
a = int(a)
b = Fraction(b)
print(floor(a * b))
メモ
浮動小数点数オタクが AtCoder Beginner Contest 169 のC問題をガチで解説してみる
提出
code: python
a, b = input().split()
if int(b0) == 0:
print(0)
else:
print(str(int(a)*(int(float(b)*100))):-2)
解答
code: python
a, b = input().split()
a = int(a)
b = round(float(b) * 100)
print(a * b // 100)