program task1;

{$APPTYPE CONSOLE}

  var s,i,j,k:integer;
  a:array[1..3] of integer;
  const f:string='task1';
begin


{ assign(output,f+'.in');
rewrite(output);
randomize;
writeln(random(50),' ',random(50),' ',50-random(100));
close (output);}

 assign(input,f+'.in');
reset(input);

assign(output,f+'.out');
rewrite(output);
readln(a[1],a[2],a[3]);
s:=0;
i:=1;j:=2;k:=3;
s:=s+(a[i]+a[j]+a[k]);
s:=s+(a[i]+a[j]-a[k]);
s:=s+(a[i]+a[j]*a[k]);
s:=s+(a[i]-a[j]+a[k]);
s:=s+(a[i]-a[j]-a[k]);
s:=s+(a[i]-a[j]*a[k]);
s:=s+(a[i]*a[j]+a[k]);
s:=s+(a[i]*a[j]-a[k]);
s:=s+(a[i]*a[j]*a[k]);

i:=1;j:=3;k:=2;
s:=s+(a[i]+a[j]+a[k]);
s:=s+(a[i]+a[j]-a[k]);
s:=s+(a[i]+a[j]*a[k]);
s:=s+(a[i]-a[j]+a[k]);
s:=s+(a[i]-a[j]-a[k]);
s:=s+(a[i]-a[j]*a[k]);
s:=s+(a[i]*a[j]+a[k]);
s:=s+(a[i]*a[j]-a[k]);
s:=s+(a[i]*a[j]*a[k]);

i:=2;j:=1;k:=3;
s:=s+(a[i]+a[j]+a[k]);
s:=s+(a[i]+a[j]-a[k]);
s:=s+(a[i]+a[j]*a[k]);
s:=s+(a[i]-a[j]+a[k]);
s:=s+(a[i]-a[j]-a[k]);
s:=s+(a[i]-a[j]*a[k]);
s:=s+(a[i]*a[j]+a[k]);
s:=s+(a[i]*a[j]-a[k]);
s:=s+(a[i]*a[j]*a[k]);

i:=2;j:=3;k:=1;
s:=s+(a[i]+a[j]+a[k]);
s:=s+(a[i]+a[j]-a[k]);
s:=s+(a[i]+a[j]*a[k]);
s:=s+(a[i]-a[j]+a[k]);
s:=s+(a[i]-a[j]-a[k]);
s:=s+(a[i]-a[j]*a[k]);
s:=s+(a[i]*a[j]+a[k]);
s:=s+(a[i]*a[j]-a[k]);
s:=s+(a[i]*a[j]*a[k]);

i:=3;j:=1;k:=2;
s:=s+(a[i]+a[j]+a[k]);
s:=s+(a[i]+a[j]-a[k]);
s:=s+(a[i]+a[j]*a[k]);
s:=s+(a[i]-a[j]+a[k]);
s:=s+(a[i]-a[j]-a[k]);
s:=s+(a[i]-a[j]*a[k]);
s:=s+(a[i]*a[j]+a[k]);
s:=s+(a[i]*a[j]-a[k]);
s:=s+(a[i]*a[j]*a[k]);

i:=3;j:=2;k:=1;
s:=s+(a[i]+a[j]+a[k]);
s:=s+(a[i]+a[j]-a[k]);
s:=s+(a[i]+a[j]*a[k]);
s:=s+(a[i]-a[j]+a[k]);
s:=s+(a[i]-a[j]-a[k]);
s:=s+(a[i]-a[j]*a[k]);
s:=s+(a[i]*a[j]+a[k]);
s:=s+(a[i]*a[j]-a[k]);
s:=s+(a[i]*a[j]*a[k]);

writeln(s);
close(input);
close(output);






end.