import std.algorithm, std.array, std.container, std.range;
import std.string, std.conv;
import std.math, std.bigint, std.bitmanip, std.random;
import std.stdio, std.typecons;

const auto mod = 10 ^^ 9 + 7;

void main()
{
  auto n = readln.chomp.to!ulong;
  auto ai = readln.split.map!(to!int).array;
  ai.sort();
  auto gi = ai.group;

  auto r = n * (n - 1) * (n - 2) / 6;
  foreach (g; gi) {
    auto c = g[1].to!long;
    if (c >= 2)
      r -= c * (c - 1) / 2 * (n - c);
    if (c >= 3)
      r -= c * (c - 1) * (c - 2) / 6;
  }

  writeln(r % mod);
}