Task 2 cpp 2016 iitu

#include <iostream>
#include <string>

using namespace std;

struct Person {
  string name;
  string surname;
  int age;
  int tcome;
  int tleave;
};

int timeToMinuts(string t) {
  int h = 0, m = 0;
  if (t[2] == ':') {
    h = (t[0] - '0') * 10 + (t[1] - '0');
    m = (t[3] - '0') * 10 + (t[4] - '0');
  } else {
    h = (t[0] - '0');
    m = (t[2] - '0') * 10 + (t[3] - '0');
  }
  return h * 60 + m;
}

void addNotSame(int *arr, int n, int elem) {
  bool repeats = false;
  for (int i = 0; i < n; i++) {
    if (arr[i] == elem) {
      repeats = true;
    }
  }
  if (!repeats) {
    arr[n] = elem;
  }
}

Person *findMaxGuests(Person *party, int *t, int n, int p, int *r, int *mt) {
  int max = 0;
  int maxtime = 0;
  for (int i = 0; i < p; i++) {
    int guests = 0;
    for (int j = 0; j < n; j++) {
      if (t[i] >= party[j].tcome && t[i] <= party[j].tleave) {
        guests += 1;
      }
      if (guests > max) {
        max = guests;
        maxtime = t[i];
      }
    }
  }
  *r = max;
  *mt = maxtime;
  Person *res = new Person[max];
  int m = 0;
  for (int i = 0; i < n; i++) {
    if (maxtime >= party[i].tcome && maxtime <= party[i].tleave) {
      res[m] = party[i];
      m++;
    }
  }
  return res;
}

void sortByAge(Person *p, int n) {
  for (int i = 0; i < n; i++) {
    for (int j = i + 1; j < n; j++) {
      if (p[i].age > p[j].age) {
        swap(p[i], p[j]);
      }
    }
  }
}

int main() {
  int n, p = 0;
  cin >> n;
  int *times = new int[2 * n];
  Person *party = new Person[n];
  for (int i = 0; i < n; i++) {
    string a, b;
    cin >> party[i].name >> party[i].surname >> party[i].age >> a >> b;
    party[i].tcome = timeToMinuts(a);
    addNotSame(times, p, party[i].tcome);
    p++;
    party[i].tleave = timeToMinuts(b);
    addNotSame(times, p, party[i].tleave);
    p++;
  }
  int guestsn, maxt;
  Person *r = findMaxGuests(party, times, n, p, &guestsn, &maxt);
  sortByAge(r, guestsn);

  cout << guestsn << endl;
  // cout << maxt / 60 << ":" << maxt % 60 << endl;
  for (int i = 0; i < guestsn; i++) {
    cout << r[i].name << " " << r[i].surname << " " << r[i].age << " ";
    cout << r[i].tcome / 60 << ":" << r[i].tcome % 60 << " ";
    cout << r[i].tleave / 60 << ":" << r[i].tleave % 60 << endl;
  }

  delete[] r;
  delete[] party;
  delete[] times;

  return 0;
}