#include <stdio.h> int main() { int year, month = 0; while (scanf("%d %d", &year, &month) != EOF) { int arr1[] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; //对应月份 1 2 3 4 5 6 7 8 9 10, 11 12 if (year % 4 == 0 && year % 100 != 0 && month == 2) {//普通年份...