import std.stdio, std.string, std.algorithm, std.range, std.conv, std.math;

void main() {
  auto abc = readln.chomp.split.map!(to!int).array.sort;
  if (abc[0] + abc[1] == abc[2]) {
    "Yes".writeln;
  } else {
    "No".writeln;
  }
}
