Maximum sum

input/code.cpp: In function 'int main()':
input/code.cpp:19:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |     for (int i = 1; i < vals.size(); i++)
      |                     ~~^~~~~~~~~~~~~

// Online C++ compiler to run C++ program online
#include <iostream>
#include <vector>

using namespace std;

int main() {
    
    int n; // Length of array
    cin >> n;
    
    vector<int> vals(n);
    for (int i = 0; i < n; i++)
    {
        cin >> vals[i];
    }
    int res = 0;
    int maxEnding = vals[0];
    for (int i = 1; i < vals.size(); i++)
    {
        maxEnding = max(vals[i], maxEnding + vals[i]);
        res = max(maxEnding, res);
    }
    
    cout << res;
    
    
    

    return 0;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: WRONG ANSWER

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

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