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

void main() {
   auto a = readln.split.map!(to!int);
   if (a[0] >= a[1]) {
      writeln("No"); return;
   }
   if (a[1] >= a[2]) {
      writeln("No"); return;
   }
   writeln("Yes");
}