#include<cstdio> int main() { int Mday[13] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; int year1, mon1, day1; int year2, mon2, day2; bool isBefore ; scanf("%04d%02d%02d", &year1, &mon1, &day1); scanf("%04d%02d%02d", &year2, &mon2, &day2); if (year1 < y...