[CodeUp] 1092 : [기초-종합] 함께 문제 푸는 날

문제 : https://codeup.kr/problem.php?id=1092

#include <stdio.h>

int main(void)
{
	int day, a = 3, b = 7, c = 9;

	day = 1;
	while (day % a != 0 || day % b != 0 || day % c != 0) day++;
	printf("%d ", day);
	
	return 0;
}