似乎没啥错，是不是要用↓↓↓

switch(){
}

#include<iostream>
using namespace std;
int main(){
    long long a,b,c;
    cin>>a>>b>>c;
    if(a>=b && b>=c){
        cout<<c<<" "<<b<<" "<<a;
    }else if(a<=c && c<=b){
        cout<<a<<" "<<c<<" "<<b;
    }else if(b<=c && c<=a){
        cout<<b<<" "<<c<<" "<<a;
    }else if(b<=a && a<=c){
        cout<<b<<" "<<a<<" "<<c;
    }else if(c<=b && b<=a){
        cout<<c<<" "<<b<<" "<<a;
    }else if(c<=a && a<=b){
        cout<<c<<" "<<a<<" "<<b;
    }
    return 0;
}