用java写的，MLE

感觉数组也没开大

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int m = sc.nextInt();
		int[] a = new int[n + 10];
		for (int i = 1; i <= n; ++i)
			a[i] = sc.nextInt();
		while (m-- != 0) {
			int q = sc.nextInt();
			int l = 0, r = n + 1;
			while (l + 1 < r) {
				int mid = l + r >> 1;
				if (a[mid] >= q)
					r = mid;
				else
					l = mid;
			}
			if (a[r] == q)
				System.out.print(r + " ");
			else
				System.out.print(-1 + " ");
		}
	}
}