#include <bits/stdc++.h> using namespace std; int main() {
int a, b, c, d;
cin >> a;
if (a<=0<= 3) {
cout << "infant";
} else if (a >= 4 && a <= 12) {
cout << "child";
} else if (a >= 13 && a <= 18) {
cout << "youngster";
} else if (a >= 19 && a <= 25) {
cout << "youth";
}
}
共 1 条回复
a <= 0 <= 3 改成 0 <= a && a <= 3