[백준] 33910 합의 최소 - Greedy / Java

• 문제 링크

https://www.acmicpc.net/problem/33910

 

• 풀이 코드

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

public class Main {

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

        int n = read();
        int[] arr = new int[n];
        while (n-- > 0) arr[n] = read();

        long sum = 0;
        for (int i = 0, j = arr[0]; i < arr.length; i++, sum += j) if (arr[i] < j) j = arr[i];

        bw.write(String.valueOf(sum));
        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;
    }

}