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

void main(){
  auto buf = readln().strip().split().map!(to!int)();
  immutable X = buf[0];
  immutable Y = buf[1];

  writeln((sqrt(X^^2.to!float + Y^^2)*2 + 1).to!int);
}