#include<iostream> int main(){ int year,month,day; scanf("%d %d",&year,&month); switch(month){ case 1:day=31;break; case 2: if((year%400==0) || ((year%4==0) && (year%100!=0)) ){ day=29; }else{ day=28; } break; case 3:day=31;break; case 4:day=30;break; case 5:day=31;break; case 6:day=30;break; case 7:day=31;break; case 8:day=31;break; case 9:day=30;break; case 10:day=31;break; case 11:day=30;break; case 12:day=31;break; } printf("%d",day); return 0; }