#include using namespace std; int main(){ int a,b,c; scanf("%d%d",&a,&b); if(b1||b3||b5||b7||b8||b10||b12)c=31; else if(b4||b6||b9||b11)c=30; else if(b2&&a%400==0)c=29; else c=28; printf("%d",c); return 0; }