Maximum sum

input/code.cpp: In function 'int main(int, char**)':
input/code.cpp:24:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |     while (l < nums.size()) {
      |            ~~^~~~~~~~~~~~~

#include <iostream>
#include <vector>

int main(int argc, char **argv) {
    int i;
    std::cin >> i;

    std::vector<int> nums;
    for (int x=0; x<i; x++) {
        int j;
        std::cin >> j;
        nums.push_back(j);
    }

    int max_sum = 0;

    int l = 0;
    int r = nums.size() - 1;

    int aux_sum = 0;

    int last_l_removed = 0;

    while (l < nums.size()) {
        if (aux_sum < 0) {
            last_l_removed = l;
            aux_sum = nums.at(l);
        } else {
            aux_sum = aux_sum + nums.at(l);
        }
        l++;
    }

    int last_r_removed = nums.size() - 1;

    aux_sum = 0;

    while (r >= 0) {
        if (aux_sum < 0) {
            last_r_removed = r;
            aux_sum = nums.at(r);
        } else {
            aux_sum = aux_sum + nums.at(r);
        }

        r--;
    }

    for (int x=last_l_removed+1; x<last_r_removed; x++) {
        max_sum = max_sum + nums.at(x);
    }

    std::cout << max_sum << std::endl;
    
    return 0;
}

Test 1

Verdict: WRONG ANSWER

Test 2

Verdict: WRONG ANSWER

Test 3

Verdict: WRONG ANSWER

Test 4

Verdict: WRONG ANSWER

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: WRONG ANSWER

Test 11

Verdict: WRONG ANSWER

Test 12

Verdict: WRONG ANSWER

Test 13

Verdict: WRONG ANSWER

Test 14

Verdict: WRONG ANSWER

Test 15

Verdict: WRONG ANSWER