func_code_string: #include <bits/stdc++.h>   using namespace std;   long long t, n, m;   int a[200003];   pair<int, int> p[200003];   int main() {     cin >> t;     while (t--) {       cin >> n;       for (int i = 1; i <= n; ++i) {         cin >> a[i];       }       long long re = 0;       for (int i = 1; i <= n;) {         int val = a[i], j;         for (j = i; j <= n && 1ll * a[j] * a[i] > 0; ++j) val = max(val, a[j]);         re += val;         i = j;       }       cout << re <<   n ;     }     return 0;   }   