#include <bits/stdc++.h>   using namespace std;   long long date(int y, int m, int d) {     if (m < 3) y--, m += 12;     return (long long)365 * y + y / 4 - y / 100 + y / 400 + (153 * m - 457) / 5 +            d - 306;   }   int main() {     int y1, y2, m1, m2, d1, d2;     scanf( %d:%d:%d , &y1, &m1, &d1);     scanf( %d:%d:%d , &y2, &m2, &d2);     printf( %lld n , llabs(date(y1, m1, d1) - date(y2, m2, d2)));     return 0;   }   