Mind the spaces!
If you use
cin >> s1
The spaces will be ingnored!
I use this to get AC
    while (cin)
    {
        c = '';
        c = cin.get();
        if (c != '\n')    s += c;
    }
hope I can help you.

hi
write this statement while(getline(cin,s1)){...}

You can also use
  cin >> noskipws;
After this spaces won't be ignored.

Edited by author 22.11.2010 09:46