IdlePortlyRobberfly created by anonymous - https://repl.it/repls/IdlePortlyRobberfly

IdlePortlyRobberfly.cpp

#include <iostream>

using namespace std;

void swap(int &a, int &b) {
  int tmp = a;
  a = b;
  b = tmp;
}

void reverse(int *m, int n1, int n2) {
  int tn1 = n1, tn2 = n2;
  for (int i = 0; i < (n1 - n2) / 2; ++i) {
    swap(m[tn1], m[tn2]);
    tn1--;
    tn2++;
  }  
}

int main() {
  int n, a, b, c, d;
  cin >> n >> b >> a >> d >> c;
  a--; b--; c--; d--; // sorry for this... but I think that it's more beautiful, than filling 4 strings...
  int *mas = new int[n];
  for (int i = 0; i < n; ++i) {
    mas[i] = i + 1; 
  } 
  reverse(mas, a, b);
  reverse(mas, c, d);
  for (int i = 0; i < n; ++i) {
    cout << mas[i] << ' ';
  }
}