帮忙看看，样例过了 交上去全是TLE

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.StreamTokenizer;
import java.util.Arrays;

public class Main {

    static int N = (int) 1e6 + 10;

    static int n, m;

    static int target;

    static int binary(int num[], int target) {

        int l = 0;
        int r = num.length - 1;
        int mid = l + (r - l) / 2;

        while (r >= l) {
            mid = l + (r - l) / 2;

            if (num[mid] == target && num[mid - 1] != target) {
                return mid;
            }
            else if (num[mid] < target) {
                l = mid + 1;
            }
            else if (num[mid] > target) {
                r = mid - 1;
            }
        }

        return -1;
    }

    public static void main(String[] args) throws IOException {

        StreamTokenizer st = new StreamTokenizer(new BufferedReader(new InputStreamReader(System.in)));

        PrintWriter pw = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));

        st.nextToken();
        n = (int) st.nval;

        st.nextToken();
        m = (int) st.nval;

        int num[] = new int[n + 1];

        for (int i = 1; i <= n; i++) {
            st.nextToken();
            num[i] = (int) st.nval;
        }

        for (int i = 1; i <= m; i++) {
            st.nextToken();
            target = (int) st.nval;

            pw.print(binary(num, target) + " ");

        }
        pw.flush();

    }

}