[SWEA] 제로

 

 

[문제]

https://swexpertacademy.com/main/code/problem/problemDetail.do?contestProbId=AW5jBWLq7jwDFATQ

SW Expert Academy

 

 

 

[소스 코드]

import java.io.*;
import java.util.*;
public class Solution {
	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		int T = Integer.parseInt(br.readLine());
		for(int tc=1;tc<=T;tc++) {
			int k = Integer.parseInt(br.readLine());
			Stack<Integer> s = new Stack<>();
			for(int i=0;i<k;i++) {
				int v = Integer.parseInt(br.readLine());
				if(v==0) s.pop();
				else s.push(v);
			}
			int result = 0;
			while(!s.isEmpty()) {
				result += s.pop();
			}
			System.out.println("#"+tc+" "+result);
		}
	}
}