Yet Another Card Deck.cpp

// https://codeforces.com/contest/1511/problem/C
#include <bits/stdc++.h>

#define fi          first
#define se          second
#define pb          push_back
#define mp          make_pair
#define ll          long long
#define pll         pair<long, long>
#define vll         vector<long long>
#define inf         1e18
#define range(a,b)  substr(a,b-a+1)
#define FIO         ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)

using namespace std;

int main()
{
    FIO;

    #ifndef ONLINE_JUDGE
    //remove this piece of code when this has to be submitted in kickstart, coding ninjas
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
    //freopen is used to associate a file with stdin or stdout stream in C++
    #endif

    ll n, q;
    cin >> n >> q;
    vector<vll> arr(51);
    for (ll i = 1; i <= n; i++) {
        ll temp;
        cin >> temp;
        arr[temp].pb(i);
    }
    for (ll i = 0; i < q; i++) {
        ll temp;
        cin >> temp;
        cout << arr[temp][0] << " ";
        ll ind = arr[temp][0];
        for (ll i = 1; i <= 50; i++) {
            for (ll j = 0; j < arr[i].size() && j < 1; j++) {
                if (ind > arr[i][j])
                    arr[i][j]++;
            }
        }
        arr[temp][0] = 1;
    }

    return 0;
}