题解 |

#include <stdio.h> int main() { int a[12]={31,28,31,30,31,30,31,31,30,31,30,31}; int year,month; while(~scanf("%d %d",&year,&month)) { if((year%4==0 && year%100!=0) || year%400==0) { a[1]=29; }else a[1]=28; printf("%d\n",a[month-1]); } }