用结构体永久存储下标

ds题目

#include<iostream>
using namespace std;
typedef struct Node {
    int index;
    int data;
}node;
const int N = 10010;
node a[N];
int output[N];
int hh = 1, tt = 0;
int cnt;
bool is_max(Node r[], Node s, int hh, int tt) {
    for (int i = hh; i <= tt; i++) {
        if (r[i].data > s.data) return false;
    }
    return true;
}
int main() {
    int n, m;
    cin >> n >> m;

    for (int i = 1; i <= n; i++) {
        int x;
        cin >> x;
        a[i].index = i;
        a[i].data = x;
    }
    hh = 1, tt = n;
    while (hh <= tt)
    {
        if (is_max(a, a[hh], hh, tt))
        {
            cnt++;
            output[a[hh].index] = cnt;
            hh++;
        }
        else
        {
            a[++tt] = a[hh++];
        }
    }

    cout << output[m] << endl;

}