HackerRank>Algorithm>implementation> Grading Students

gradingStudents.cpp

#include <bits/stdc++.h>

using namespace std;

/*
 * Complete the gradingStudents function below.
 */
vector<int> gradingStudents(vector<int> grades) {
    vector<int> result;
    result.reserve(grades.size());

    for (int i = 0; i < grades.size(); i++) {
      int grade = grades[i];
      if (grade < 38) {
        result.push_back(grade);
        continue;
      }

      if((grade+1) % 5 == 0) {
          result.push_back(grade+1);
      } else if ((grade+2) % 5 == 0) {
        result.push_back(grade + 2);
      } else {
          result.push_back(grade);
      }
    }
    return result;
}

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

    int n;
    cin >> n;
    cin.ignore(numeric_limits<streamsize>::max(), '\n');

    vector<int> grades(n);

    for (int grades_itr = 0; grades_itr < n; grades_itr++) {
        int grades_item;
        cin >> grades_item;
        cin.ignore(numeric_limits<streamsize>::max(), '\n');

        grades[grades_itr] = grades_item;
    }

    vector<int> result = gradingStudents(grades);

    for (int result_itr = 0; result_itr < result.size(); result_itr++) {
        fout << result[result_itr];

        if (result_itr != result.size() - 1) {
            fout << "\n";
        }
    }

    fout << "\n";

    fout.close();

    return 0;
}