program z1;
var a,b,c:integer;
begin
write('a=');readln(a);
write('b=');readln(b);
if a>b then c:=a-b else c:=b-a;
writeln('c=',c);
end.
program z2;
var a,b,c:integer;
begin
write('a=');readln(a);
write('b=');readln(b);
write('c=');readln(c);
if ((a mod 2)=0)or((b mod 2)=0)or((c mod 2)=0)then writeln('четное') else writeln('нечетное');
end.
