#include <iostream> #include<cstdio> using namespace std; class Date { public: int GetmonthDay(int year,int month) { int array[] = {-1, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; if ((_month == 2) && (_year % 400 == 0 || _year % 100 != 0 && _year % 4 == 0)) { return...