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program i4;
var a,b:integer;
begin
readln(a,b);
writeln('было',' ',a,' ',b);
a:=b;
b:=a;
writeln('стало',' ',a,' ',b);
end.

Success #stdin #stdout 0s 336KB

stdin

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1
2

stdout

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было 1 2
стало 2 2

https://ideone.com/nWLu1b

language:

Pascal (fpc 3.0.4)

created:

visibility:

public

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