Maximum sum

input/code.cpp: In function 'int main()':
input/code.cpp:8:19: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare]
    8 |     for(int i=0; i<n; i++){
      |                  ~^~

#include <bits/stdc++.h>
using namespace std;

int main(){
    unsigned n;
    std::cin >> n;
    vector<long long> xs(n,0);
    for(int i=0; i<n; i++){
        long long x;
        cin >> x;
        xs[i] = x;
    }

    long long b = 0;
    for(unsigned i=0; i<n; i++){
        long long sum = 0;
        for(unsigned j=i; j<n; j++){
            sum += xs[j];
            b = max(b, sum);
        }
    }
    cout << b << "\n";

    // vector<long long> ds(n-1,0);
    // for(int i=0; i<n-1; i++){
    //     ds[i] = (xs[i+1]-xs[i]);
    //     cout << ds[i] << "\n";
    // }
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: WRONG ANSWER

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: TIME LIMIT EXCEEDED

Test 7

Verdict: TIME LIMIT EXCEEDED

Test 8

Verdict: TIME LIMIT EXCEEDED

Test 9

Verdict: TIME LIMIT EXCEEDED

Test 10

Verdict: TIME LIMIT EXCEEDED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: WRONG ANSWER

Test 13

Verdict: WRONG ANSWER

Test 14

Verdict: WRONG ANSWER

Test 15

Verdict: WRONG ANSWER