#include <bits/stdc++.h> using namespace std; int mouth_day[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}}; int runnian(int year) { if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0)return 1; else return 0; } int main() {...