[BOJ] 1541 잃어버린 괄호

문제

www.acmicpc.net/problem/1541

1541번: 잃어버린 괄호

 

풀이

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

public class Main {
	
	
	public static void main(String[] args) throws NumberFormatException, IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String sic = br.readLine();
		StringTokenizer st = new StringTokenizer(sic,"-");
		int[] sum = new int[st.countTokens()];
		int idx = 0;
		
		while(st.hasMoreTokens()) {
			String addition = st.nextToken();
			StringTokenizer tmp = new StringTokenizer(addition,"+");
			while(tmp.hasMoreTokens()) {
				sum[idx]+=Integer.parseInt(tmp.nextToken());
			}
			idx++;
		}
		
		int sub = sum[0];
		for(int i=1;i<sum.length;i++)
			sub-=sum[i];
		
		System.out.println(sub);
		
	}

}