[BOJ] 19637 IF문 좀 대신 써줘 (JAVA)

https://www.acmicpc.net/problem/19637

19637번: IF문 좀 대신 써줘

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Main {
	
    public static void main(String[] args) throws Exception {

        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder sb = new StringBuilder();
        StringTokenizer st = new StringTokenizer(br.readLine(), " ");
        int N = Integer.parseInt(st.nextToken());
        int M = Integer.parseInt(st.nextToken());
        String[] name = new String[N];
        int[] power = new int[N];
        for (int i = 0; i < N; i++) {
            st = new StringTokenizer(br.readLine());
            name[i] = st.nextToken();
            power[i] = Integer.parseInt(st.nextToken());
        }
        for (int i = 0; i < M; i++) {
            int target = Integer.parseInt(br.readLine());
            int start = 0;
            int end = N - 1;
            while (start <= end) {
                int mid = (start + end) / 2;
                if (power[mid] < target) start = mid + 1;
                else end = mid - 1;
            }
            sb.append(name[start]).append("\n");
        }

        System.out.print(sb);

    }
	
}