[백준] 13676 Escultura a Laser - Data Structure / Java

• 문제 링크

https://www.acmicpc.net/problem/13676

 

• 풀이 코드

import java.io.BufferedWriter;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.util.Stack;

public class Main {

    public static void main(String[] args) throws IOException {
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        StringBuilder sb = new StringBuilder();

        Stack<Integer> stk = new Stack<>();
        int a;
        while ((a = read()) != 0) {
            int c = read(), i = read(), sum = a - stk.push(i);
            while (c-- > 1) if ((i = stk.pop() - stk.push(read())) > 0) sum += i;
            sb.append(sum).append('\n');
        }

        bw.write(sb.toString());
        bw.flush();
    }

    private static int read() throws IOException {
        int c, n = System.in.read() & 15;
        while ((c = System.in.read()) > 32) n = (n << 3) + (n << 1) + (c & 15);

        return n;
    }

}