prudent1)
var a,b,c,p: integer;
s,k: real;
begin
readln(a);
readln(b);
readln(c);
p:=(a+b+c);
k:=(a+b+c)/2;
s:=sqrt(k*(k-a)*(k-b)*(k-c));
writeln('P =',' ',p,' ', 'S =', ' ',s);
end.
2)
var a,b,c,j: integer;
begin
readln(a);
readln(b);
c:=a;
j:=b;
begin
a:=j;
b:=c;
end;
writeln(a,' ',b);
end.
Buckley Creek