1:
max:=a;
if max<b then max:=b;
2:
min:=a;
if min>b then min:=b;
3: if (x=sqr(a)+sqr(b)) and (a<0) then writeln(x);
if (x=sqrt(b)+sqrt(a)) and (a>0) then writeln(x);
Đúng 3
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