var
n:string;
i:longint;
begin
readln(n);
if n[1]='-' then
write('-');
delete(n,1,1);
end;
while n[length(n)]='0' do
delete(n,length(n),length(n));
for i:=length(n) downto 1 do
write(n[i]);
end.
方法
字符串,去掉0,有‘-’先输‘-’
自己悟
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