#include<iostream> using namespace std; void f(int a, int b, int c) { cout << a << b << c << ‘/’; if(a == 3 && b == 2 && c == 1) return; if(b < c) f(a, c, b); else if(a < b) { if(a < c) f(c, a, b); else f(b, c, a); } } int main() { int a, b, c; cin >> a >> b >> c; f(a, b, c); cout << endl; return 0; }

输入: 1 3 2

输出： _______