#include<iostream>
#include<vector>
using namespace std;
int main()
{
    char str[]="rahul shandilya is going";
    
    string ans;
    int n=0;
    while(str[n]!='\0')
         n++;   
         //cout<<n;  
        bool flag=true;     
   for(int i=n-1;i>=0;i--)
   {
          if(str[i]==' ')
          {
                       int m=i+1;
                      // cout<<m<<" ";
                       string temp;
                       while(str[m]!=' ' && m<n)
                       { 
                                       temp+=str[m];
                                       m++;
                       }
                       //cout<<m<<" ";
                       if(flag)
                       {
                               ans+=temp;
                               flag=false;
                               continue;
                       }
                       if(flag==false)
                       {
                                      ans+=' ';
                                      ans+=temp;
                       }
          } 
   }
    
   cout<<ans; 
    system("pause");
    return 0;
}
//tell me if there is a batter way to do it,i dont think my 
//solution is efficent