#include<stdio.h> int main() { int a; scanf("%d",&a); switch(a) { case 1: printf(31); break; case 2: printf(28); break; case 3: printf(31); break; case 4: printf(30); break; case 5: printf(31); break; case 6: printf(30); break; case 7: printf(31); break; case 8: printf(31); break; case 9: printf(30); break; case 10: printf(31); break; case 11: printf(30); break; case 12: printf(31); break; } return 0; }
#include<stdio.h>
int main()
{
int a;
scanf("%d",&a);
switch(a)
{
case 2:
printf("28");
break;
case 4:
case 6:
case 9:
case 11:
printf("30");
break;
default:
printf("31");
}
return 0;
}