swap函数真不错

#include <bits/stdc++.h>
using namespace std;
int main(){
int a,b,c;
cin>>a>>b>>c;
if(a>b){
swap(a,b);
}
if(a>c){
swap(a,c);
}
if(b>c){
swap(b,c);
}
cout<<a<<" "<<b<<" "<<c;
return 0;
}