Help with this problem?

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1

I have been trying to solve COMPILER PROBLEM,

Compiler

I am confused as in why i am getting wrong answer.

It would be great if somebody is able to point out the error.

Here is the code,

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Stack;

class StackImp {
static Stack<String> sta;

public static void main(String[] args) throws NumberFormatException, IOException{
	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
	int t = Integer.parseInt(br.readLine());
	while(t-->0){
	String input = br.readLine();
	String syms[] = input.split("");
	int count = 0;
	sta = new Stack<String>();
	for(int i=0;i<syms.length;i++){
		if(syms[i].equals("<")){
			sta.push("<");
			count+=1; 
		}

		else if(syms[i].equals(">")&&!sta.isEmpty()){
			count+=1;
			sta.pop();
		}
	}
	if(sta.isEmpty())
		System.out.println(count);
	else
		System.out.println(0);
	}
}
}