#include <iostream>
#include <ctime>
#include <string>
using namespace std;
int m[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
int main () {
	time_t now;
	struct tm dt1;
	struct tm dt2;
	time(&now);
	dt1 = *localtime(&now);
	dt2 = *localtime(&now);
	string s1, s2;
	cin >> s1 >> s2;
	int m1 = 0, d1 = 0, y1 = 0;
	int m2 = 0, d2 = 0, y2 = 0;
	int k = 1;
	int cc = 0;
	for (int i = s1.length() -1; i >= 0; i--) {
		char c = s1[i];
		if (c ==':') {
			k = 1;
			cc++;
			continue;
		} else if (cc == 0) {
			d1 += (k * int(c - '0'));
			k *= 10;
		} else if (cc == 1) {
			m1 += (k * int(c - '0'));
			k *= 10;
		} else if (cc == 2) {
			y1 += (k * int(c - '0'));
			k *= 10;
		}
	}
	k = 1;
	cc = 0;
	for (int i = s2.length() -1; i >= 0; i--) {
		char c = s2[i];
		if (c ==':') {
			k = 1;
			cc++;
			continue;
		} else if (cc == 0) {
			d2 += (k * int(c - '0'));
			k *= 10;
		} else if (cc == 1) {
			m2 += (k * int(c - '0'));
			k *= 10;
		} else if (cc == 2) {
			y2 += (k * int(c - '0'));
			k *= 10;
		}
	}
	dt1.tm_hour = 0; dt1.tm_min = 0; dt1.tm_sec = 0;
	dt1.tm_mday = d1, dt1.tm_mon = m1, dt1.tm_year = y1;

	dt2.tm_hour = 0; dt2.tm_min = 0; dt2.tm_sec = 0;
	dt2.tm_mday = d2, dt2.tm_mon = m2, dt2.tm_year = y2;
	double s = difftime(mktime(&dt1), mktime(&dt2));
	cout << s / 86400;
	return 0;
}