```#include
#include <iostream>
using namespace std;
int main()
{
int n;
for( ; ; ){
cout<<"你不讲武德，你是猪🐖";
0 <= n <= 25;
cin >> n;
if (n>=0 && n<=3)
{
cout<<"infant";
}
else if (n>=4 && n<=12)
{
cout<<"child";}
}