Equilateral numbers

input/code.cpp: In function 'int main()':
input/code.cpp:26:15: warning: unused variable 'i' [-Wunused-variable]
   26 |     long long i =0;
      |               ^
input/code.cpp: In function 'long long int eq(long long int)':
input/code.cpp:18:1: warning: control reaches end of non-void function [-Wreturn-type]
   18 | }
      | ^

#include <vector>
#include <string>
#include <iostream>
#include <cmath>
 
using namespace std;
 

long long eq(long long target){
    
    long long equilateral = 0;
    long long i = 0;
    while (++i) {
        equilateral += i;
        if (equilateral > target)
            return equilateral - i;
    }
}

int main(){
    long long n;
 
    cin >> n;
 
    long long count =0;
    long long i =0;
    while (n != 0){
        count++;
        //cout << n << " " <<  eq(n) << endl;
        n -= eq(n);
    }
    cout <<  count <<endl;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: WRONG ANSWER

Test 6

Verdict: WRONG ANSWER

Test 7

Verdict: WRONG ANSWER

Test 8

Verdict: WRONG ANSWER

Test 9

Verdict: WRONG ANSWER

Test 10

Verdict: ACCEPTED

Test 11

Verdict: WRONG ANSWER

Test 12

Verdict: WRONG ANSWER