import std.stdio,
	   std.conv,
	   std.string,
	   std.math,
	   std.regex,
	   std.range,
	   std.ascii;
	   std.algorithm,
void main(){
	auto ip = readln.split.to!(int[]), A = ip[0], B = ip[1];
	int X;
	if(A > B){
		X += A;
	} else {
		X += B;
	}
		if(A > B){
		X += A;
	} else {
		X += B;
	}
	writeln(X);
}