// [NWERC'14] Luggage, by Jan Kuipers

#include <climits>
#include <iostream>
#include <set>
#include <vector>
#include <algorithm>

using namespace std;

long long gcd(long long a, long long b) {
  return (b == 0 ? a : gcd(b, a % b));
}

int main() {
  int N,P,R;
  cin>>N>>P>>R;
  vector<int> x(N);
  for (int n=0; n<N; n++) {
    cin>>x[n];
  }
  sort(x.begin(), x.end());
  long long min_sol = LONG_LONG_MAX;
  long long max_sol = 0;
  long long total_sol = 0;
  vector<int> start = x;
  start.erase(unique(start.begin(), start.end()), start.end());
  for (int i=0; i<start.size(); i++) {
    multiset<int> todo(x.begin(), x.end());
    long long sol = 0;
    int pos = start[i];
    while (!todo.empty()) {
      multiset<int>::iterator next = todo.lower_bound(pos);
      if (next != todo.end()) {
	sol += *next - pos;
      } else {
	next = todo.begin();
	sol += P - pos + *next;
      }
      pos = *next;
      todo.erase(next);
      sol += R;
      pos = (pos + R) % P;
    }
    long long length;
    if (i > 0) {
      length = start[i] - start[i-1];
    } else {
      length = P - start.back() + start[i];
    }
    min_sol = min(min_sol, sol);
    max_sol = max(max_sol, sol + length - 1);
    total_sol += length * sol + length * (length - 1) / 2;
  }
  cout << min_sol << endl;
  cout << max_sol << endl;
  long long d = gcd(total_sol, P);
  cout << (total_sol / d) << "/" << (P / d) << endl;
  return 0;
}