import std.stdio, std.string, std.conv, std.algorithm, std.numeric, std.array, std.range;

void main() {
  long a, b, c;
  readf("%d %d %d", &a, &b, &c);

  if (a == b && b == c) {
    writeln("Yes");
  }
  else {
    writeln("No");
  }
}
