#include <stdio.h>
int main(void) {
// your code goes here
int mon;
int day;
switch(mon)
{
case 1:
if((day>=1)&&(day<=19))
else if((day>=20)&&(day<=31))
else
break;
case 2:
if((day>=1)&&(day<=18))
else if((day>=19)&&(day<=29))
else
break;
case 3:
if((day>=1)&&(day<=20))
else if((day>=21)&&(day<=31))
else
break;
case 4:
if((day>=1)&&(day<=19))
else if((day>=20)&&(day<=30))
else
break;
case 5:
if((day>=1)&&(day<=20))
else if((day>=21)&&(day<=31))
else
break;
case 6:
if((day>=1)&&(day<=21))
else if((day>=22)&&(day<=30))
else
break;
case 7:
if((day>=1)&&(day<=22))
else if((day>=23)&&(day<=31))
else
break;
case 8:
if((day>=1)&&(day<=22))
else if((day>=23)&&(day<=31))
else
break;
case 9:
if((day>=1)&&(day<=22))
else if((day>=23)&&(day<=30))
else
break;
case 10:
if((day>=1)&&(day<=23))
else if((day>=24)&&(day<=31))
else
break;
case 11:
if((day>=1)&&(day<=22))
else if((day>=23)&&(day<=30))
else
break;
case 12:
if((day>=1)&&(day<=21))
else if((day>=22)&&(day<=31))
else
break;
}
return 0;
}
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