zju 1151--------rwkj 1332 poj1519

#include<iostream>
#include<string>
#include<cstdio>
#include<cstring>
#include<algorithm>
#include<sstream>
using namespace std;
int main()
{    
    int t,i,n,k;
    string s,ss,s1,s2;
    while(cin>>t)
    {
        while(t--)
        {    cin>>n;
            getchar();
            while(n--)
            {    getline(cin,s);
                stringstream ss(s);
                i=0; k=s.size();
                while(ss>>s2)
                {    reverse(s2.begin(),s2.end());
                    for(;i<k;i++) 
                    {    if(s[i]==‘ ‘)  cout<<‘ ‘;
                        else break;
                    }
                    while(s[i]!=‘ ‘&&i<k) i++;
                    cout<<s2;
                }
                cout<<endl;
            }    
            if(t) cout<<endl;        
        }
    }
    return 0;
}