#include <bits/stdc++.h> using namespace std; int date[2][13] = { {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}, {0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31} }; bool isLeapYear(int year){ return (year%4==0&&year%100!=0)||year%400==0; } int main() { int n...