var x,y,c: integer;
z:real;
begin
readln(x,y,c);
z:=x+y/2c;
writeln(z);
end.
int x=1,y=2,c=3;int result=x+y/2*c;System.out.print(result);
var x,y,c: integer;
z:real;
begin
readln(x,y,c);
z:=x+y/2c;
writeln(z);
end.
int x=1,y=2,c=3;
int result=x+y/2*c;
System.out.print(result);