#include <stdio.h> int main() { int year,month; int days[13] = {0,31,28,31,30,31,30,31,31,30,31,30,31}; //0为了使下标代表月份 while(scanf("%d %d",&year,&month)!=EOF) { int day = days[month]; if(month==2) { if(year%4==0 && year%100!=0 || year%400=...