#include <iostream>
#include <bits/stdc++.h>
using namespace std;
int main() {
int a1, a2, a3;
int b1, b2, b3;
scanf("%d.%d.%d", &a1, &a2, &a3);
scanf("%d.%d.%d", &b1, &b2, &b3);
int y, s;
y = a1 * 17 * 29 + a2 * 29 + a3;
s = b1 * 17 * 29 + b2 * 29 + b3;
int count = s - y;
if(count < 0) {
cout << "-";
count = -count;
}
a1 = count % 29;
a2 = count / 29 % 17;
a3 = count / 29 / 17;
printf("%d.%d.%d", a3, a2, a1);
return 0;
}
