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uses math, strutils;
var
a, b: ansistring;
n: int16;
remain: boolean = false;
d: uint8;
begin
readln(a);
readln(b);
n := max(length(a), length(b)) + 1;
a := addchar('0', a, n);
b := addchar('0', b, n);
repeat
if remain then
d := ord(a[n]) + ord(b[n]) - 47
else
d := ord(a[n]) + ord(b[n]) - 48;
if d > 57 then
begin
dec(d, 10);
remain := true
end
else
remain := false;
a[n] := chr(d);
dec(n)
until n = 0;
if ord(a[1]) = 48 then
writeln(copy(a, 2, length(a) - 1))
else
writeln(a)
end.
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