#include <stdio.h> int main() { //数组下标对应月数 int month[13] = { 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; int year = 0; int mon = 0; while (scanf("%d %d", &year, &mon) != EOF) { if (year % 400 == 0 || year % 100 != 0 && year % 4 == ...