Sorting coins

input/code.cpp: In function 'int main()':
input/code.cpp:48:13: warning: unused variable 'nholes' [-Wunused-variable]
   48 |         int nholes = 0;
      |             ^~~~~~

#include <algorithm>
#include <iostream>
#include <queue>
#include <vector>

using namespace std;

struct sort_pred {
    bool operator()(const std::pair<int,int> &left, const std::pair<int,int> &right) {
        return left.second < right.second;
    }
};

int main() {
    int n, m;
    cin >> n >> m;

    vector<pair<int, int> > coins(n);
    vector<int> holes(m);

    for (int i = 0; i < n; i++) {
        cin >> coins[i].first;
        coins[i].second = i;
    }

    for (int i = 0; i < m; i++) {
        cin >> holes[i];
    }

    sort(coins.begin(), coins.end());

    // solve for 1

    // i is i - 1

    vector< pair<int, int> > res(n, {0, 0});
    for (int i = 0; i < n; i++) res[i].second = coins[i].second;

    int j = 0;
    for (int i = 0; i < n; i++) {


        int current_coin = coins[i].first;

        //cout << current_coin << ',';

        int nholes = 0;
        while (j < m and current_coin > holes[j]) ++j;
        //if (current_coin > holes[j]) --j;

        cout << j  + 1 << endl;


        //if (coins[i].first <= holes[ res[ coins[i - 1].second ].first ]) res[i].first = res[i - 1].first;
        //--j;

        res[i].first = j;

    /*
        if (i != 0)
            res[i].first = res[i - 1].first + nholes;
        else
            res[i].first = nholes;
            */
    }

    sort(res.begin(), res.end(), sort_pred());

    for (int i = 0; i < n; i++) cout <<  res[i].first + 1<< ' ';
    cout << endl;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: WRONG ANSWER

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: WRONG ANSWER

Test 6

Verdict: WRONG ANSWER

Test 7

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Test 8

Verdict: WRONG ANSWER

Test 9

Verdict: WRONG ANSWER

Test 10

Verdict: ACCEPTED

Test 11

Verdict: WRONG ANSWER

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: WRONG ANSWER

Test 16

Verdict: WRONG ANSWER

Test 17

Verdict: ACCEPTED

Test 18

Verdict: WRONG ANSWER

Test 19

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Test 20

Verdict: ACCEPTED

Test 21

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Test 22

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Test 23

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Test 24

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Test 25

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Test 27

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Test 28

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Test 30

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Test 32

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Test 35

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Test 40

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Test 44

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Test 45

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Test 47

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Test 48

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Test 49

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Test 50

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Test 57

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Test 58

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Test 59

Verdict: WRONG ANSWER

Test 60

Verdict: WRONG ANSWER