#include <stdio.h>
int main(void) {
int year,flag;
flag = 0;
if(year < 6){
flag = 0;
}else if(year <= 12){
flag = 1;
}else if(year <= 15){
flag = 2;
}else{
flag = 3;
}
switch(flag){
case(0):
break;
case(1):
break;
case(2):
break;
case(3):
break;
}
return 0;
}
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