Jumping on the Clouds

#include <bits/stdc++.h>

using namespace std;

string ltrim(const string &);
string rtrim(const string &);
vector<string> split(const string &);

/*
 * Complete the 'jumpingOnClouds' function below.
 *
 * The function is expected to return an INTEGER.
 * The function accepts INTEGER_ARRAY c as parameter.
 */

int jumpingOnClouds(vector<int> c) {
    /* for size of vector
     * if(n+2 == 0) { totalMoves++, index++2 }
     * else if(n+1 == 0) { totalMoves++, index++}
     */
     
     int minMoves = 0; 
     
     for(int i = 0; i < c.size() - 1; i++){
         if(c[i+2] == 0){
             minMoves++; i++;
         } else if (c[i+1] == 0){
             minMoves++;
         }
     }
     
     return minMoves;
}

int main()
{
    ofstream fout(getenv("OUTPUT_PATH"));

    string n_temp;
    getline(cin, n_temp);

    int n = stoi(ltrim(rtrim(n_temp)));

    string c_temp_temp;
    getline(cin, c_temp_temp);

    vector<string> c_temp = split(rtrim(c_temp_temp));

    vector<int> c(n);

    for (int i = 0; i < n; i++) {
        int c_item = stoi(c_temp[i]);

        c[i] = c_item;
    }

    int result = jumpingOnClouds(c);

    fout << result << "\n";

    fout.close();

    return 0;
}

string ltrim(const string &str) {
    string s(str);

    s.erase(
        s.begin(),
        find_if(s.begin(), s.end(), not1(ptr_fun<int, int>(isspace)))
    );

    return s;
}

string rtrim(const string &str) {
    string s(str);

    s.erase(
        find_if(s.rbegin(), s.rend(), not1(ptr_fun<int, int>(isspace))).base(),
        s.end()
    );

    return s;
}

vector<string> split(const string &str) {
    vector<string> tokens;

    string::size_type start = 0;
    string::size_type end = 0;

    while ((end = str.find(" ", start)) != string::npos) {
        tokens.push_back(str.substr(start, end - start));

        start = end + 1;
    }

    tokens.push_back(str.substr(start));

    return tokens;
}