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๊ฐ€๋กœ ๊ธธ์ด๊ฐ€ Wcm, ์„ธ๋กœ ๊ธธ์ด๊ฐ€ Hcm์ธ ์ง์‚ฌ๊ฐํ˜• ์ข…์ด๊ฐ€ ์žˆ์Šต๋‹ˆ๋‹ค. ์ข…์ด์—๋Š” ๊ฐ€๋กœ, ์„ธ๋กœ ๋ฐฉํ–ฅ๊ณผ ํ‰ํ–‰ํ•˜๊ฒŒ ๊ฒฉ์ž ํ˜•ํƒœ๋กœ ์„ ์ด ๊ทธ์–ด์ ธ ์žˆ์œผ๋ฉฐ, ๋ชจ๋“  ๊ฒฉ์ž์นธ์€ 1cm x 1cm ํฌ๊ธฐ์ž…๋‹ˆ๋‹ค. ์ด ์ข…์ด๋ฅผ ๊ฒฉ์ž ์„ ์„

programmers.co.kr

import sys
import math

input = sys.stdin.readline

w, h = map(int, input().split())


def solution(w, h):
    return w * h - (w+h-math.gcd(w, h))


print(solution(w, h))

 

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