InputReader location: class t InputReader in = new InputReader(str); ^ Main.java:7: cannot find symbol symbol : class InputReader location: class t InputReader in = new InputReader(str); ^ 3 errors
That’s because you didn’t use import for InputReader class.
I’m not as good as compiler :-D, but I do not know that class too, probably you wanted to use something else.
Maybe that’s your class, but you have to have all sources in one file on CodeChef.