IMDB Please help me where i am wrong

Please help i dont know where i am wrong

#include <bits/stdc++.h>

using namespace std;

#define ll long long int

ll space_req{0}, no_mov, result{0};

ll most_rating(vector &space, vector &rating, ll space_req, ll no_mov);

int main()

{

int t{0};

cin >> t;

while (t > 0)

{

    cin >> no_mov >> space_req;

    vector<ll> space(no_mov, 0), rating(no_mov, 0);

    for (ll i = 0; i < no_mov; i++)

    {

        cin >> space[i] >> rating[i];

    }

    result = most_rating(space, rating, space_req, no_mov);

    cout << result << endl;

    t--;

}

return 0;

}

ll most_rating(vector &space, vector &rating, ll space_req, ll no_mov)

{

ll max_rating = *max_element(rating.begin(), rating.end());

ll temp{0}, temp2{0};

for (ll i = 0; i < no_mov; i++)

{

    if (max_rating == rating[i])

    {

        temp = i;

    }

}

if (space[temp] <= space_req)

{

    return rating[temp];

}

else

{

    for (ll i = 0; i < no_mov; i++)

    {

        if (space[i] == space_req)

        {

            temp2 = i;

        }

    }

    for (ll i = 0; i < no_mov; i++)

    {

        if (((rating[i]) >= (rating[temp2])) && (space[temp2] >= space[i]))

        {

            return rating[i];

        }

    }

}

}

Why you have complicated the solution. Just select the maximum value of IMDB rating and checking space requirements while taking user input and that is the answer.

Thanks