백준(java)부호 - 1247

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.math.BigInteger;
import java.util.StringTokenizer;

public class Main {
	public static void main(String[] args) throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		for(int i =0;i<3;i++) {
			BigInteger S = new BigInteger("0");
			int N = Integer.parseInt(br.readLine());
			
			for(int j = 0;j<N;j++) {
				BigInteger N2 = new BigInteger(br.readLine());
				S = S.add(N2);
			}
			if(S.compareTo(BigInteger.ZERO) == -1) {
				System.out.println("-");
			}else if(S.compareTo(BigInteger.ZERO)==1) {
				System.out.println("+");
			}else {
				System.out.println(0);
			}
		}
	}
}