#include <stdio.h> using namespace std; int month[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; void is_year(int m) { if (m % 4 == 0 && m % 100 != 0 || m % 400 == 0) { month[1] = 29; } else { month[1] = 28; } } int main() { int m, n; whil...