杭电2000

#include<iostream>using namespace std;int main(){    char a[4],i,n,b;    while(cin>>a)    {    for(n=2;n>0;n--)    {        for(i=0;i<n;i++)        {            if(a[i]>a[i+1])            {                b=a[i];                a[i]=a[i+1];                a[i+1]=b;            }        }    }cout<<a[0]<<" "<<a[1]<<" "<<a[2];    cout<<endl;    }    return 0;}