用桶的思想真的无法全部AC吗？看来确实是不行。。

#include <iostream>
#include <malloc.h>
int n;
int m;
int j;
int k;
int* num = (int*)malloc(1000000001 * sizeof(int));
int* psi = (int*)malloc(1000000001 * sizeof(int));
using namespace std;
int main()
{
    scanf("%d %d", &n, &m);
    for (int i = 1; i <= n; i++)
    {
        scanf("%d", &j);
        num[j]++;
        if (num[j] == 1)
        {
            psi[j] = i;
        }
    }
    for (int i = 1; i <= m; i++)
    {
        cin >> k;
        if (num[k] == 0)
        {
            printf("-1 ");
            continue;
        }
        printf("%d ", psi[k]);
    }
    return 0;
}