pat_basic_1037.cpp

#include <stdio.h>
#include<iostream>
#include<iostream>
using namespace std;
int main(){
	int g1, s1, k1, g2, s2, k2,g3,s3,k3;
	int sum1 = 0, sum2 = 0,sum3=0;
	scanf_s("%d.%d.%d %d.%d.%d",&g1,&s1,&k1,&g2,&s2,&k2);
	sum1 = (g1 * 17 + s1) * 29 + k1;
	sum2 = (g2 * 17 + s2) * 29 + k2;
	sum3 = sum2 - sum1;
	g3 = sum3 / (17 * 29);
	s3 = (sum3 - g3 * 17 * 29) / 29;
	k3 = sum3 - g3 * 17 * 29 - s3 * 29;
	if (sum3 >= 0){
		printf_s("%d.%d.%d", g3, s3, k3);
	}
	else{
		printf_s("-");
		printf_s("%d.%d.%d", -g3, -s3, -k3);
	}
	return 0;
}