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