Language: C++

#include <iostream>
#include <vector>
#include <string>
#include <cstring>
#include <math.h>
#include <limits.h>
#include <map>
#include <algorithm>
#include <functional>
using namespace std;

int main() {
    
    int n;
    vector<long long> S;
    vector<long long> A;
    bool is_plus;
    int ans;
    int ans1 = 0;
    int ans2 = 0;
    
    long long sum = 0;
    
    cin >> n;
    
    for ( int i = 0; i < n; i++ ) {
        long long a;
        cin >> a;
        
        A.push_back(a);
    }
    
    for ( int i = 0; i < n; i++ ) {
        if ( !i ) {
            if ( A[i] == 0 ) {
                
            }
            else if ( A[i] < 0 ) {#include <iostream>
#include <vector>
#include <string>
#include <cstring>
#include <math.h>
#include <limits.h>
#include <map>
#include <algorithm>
#include <functional>
using namespace std;

int main() {
    
    int n;
    vector<long long> S;
    vector<long long> A;
    int j;
    
    bool is_plus;
    long long  ans = 0;
    
    long long sum = 0;
    
    cin >> n;
    
    S.push_back(0);
    
    for ( int i = 0; i < n; i++ ) {
        long long a;
        cin >> a;
        
        A.push_back(a);
    }
    
    for ( j = 0; j < n; j++ ) {
        if ( abs(A[j]) ) { break; }
     }
    
    if ( j == n ) {
        cout << A.size()*2-1 << endl;
        return 0;
    }
    
    if ( j ) {
        ans += ( j+1 )*2 - 1;
        sum = ( A[j] > 0 ) ? -1: 1;
    }
    else {
        sum = 0;
        ans = 0;
    }
    
    for ( int i = j; i < n; i++ ) {
        
        if ( !i ) {
            sum = A[i];
            continue;
        }
        
        bool is_plus = sum > 0;
        
        sum += A[i];
        
        if ( sum == 0 ) {
            ans += 1;
            sum = is_plus ? -1 : 1;
        }
        else if ( is_plus == (sum > 0) ) {
            ans += abs(sum)+1;
            sum = is_plus ? -1 : 1;
        }
        
        
    }
    
    cout << ans << endl;
    
    
    
    
    return 0;
}
                ans1 += abs(A[i]) + 1;
            }
        }
        else {
            if ( i%2 && A[i] > 0 )
            
            
        }
    }
    
    for ( int i = 0; i < n; i++ ) {
        
    }
    
    
    cout << ans << endl;
    
    
    
    
    return 0;
}

Compiler output:
a.cc:38:35: error: stray '#' in program
   38 |             else if ( A[i] < 0 ) {#include <iostream>
      |                                   ^
a.cc: In function 'int main()':
a.cc:38:36: error: 'include' was not declared in this scope
   38 |             else if ( A[i] < 0 ) {#include <iostream>
      |                                    ^~~~~~~
a.cc:38:53: error: expected primary-expression before '>' token
   38 |             else if ( A[i] < 0 ) {#include <iostream>
      |                                                     ^
a.cc:47:1: error: expected primary-expression before 'using'
   47 | using namespace std;
      | ^~~~~
a.cc:49:9: warning: empty parentheses were disambiguated as a function declaration [-Wvexing-parse]
   49 | int main() {
      |         ^~
a.cc:49:9: note: remove parentheses to default-initialize a variable
   49 | int main() {
      |         ^~
      |         --
a.cc:49:9: note: or replace parentheses with braces to value-initialize a variable
a.cc:49:12: error: a function-definition is not allowed here before '{' token
   49 | int main() {
      |            ^
a.cc:127:9: error: expected primary-expression before '}' token
  127 |         }
      |         ^