[백준] 1205 등수 구하기 - Implementation / Java

• 문제 링크

https://www.acmicpc.net/problem/1205

 

• 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(), m = read(), p = read(), i = 0, j = 1, k;
        while (i < n) {
            if (m < (k = read())) j++;
            else if (m > k) break;
            i++;
        }

        bw.write(i == p ? "-1" : String.valueOf(j));
        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;
    }

}