Why I got wang answer?
Posted by
qwt 25 Mar 2002 18:22
const
u:array[0..9] of longint=
(1,10,100,1000,10000,100000,1000000,10000000,100000000,1000000000);
maxn=100;
var
s:string;e:integer;l,tot,t,x,y,n,i,m,j,k:longint;
list:array[1..maxn] of longint;
begin
readln(s);
val(s,n,e);
l:=length(s)-1;
k:=0;
tot:=0;
repeat
x:=0;
y:=0;
m:=n;
for x:=n div (11*u[k]) downto n div (11*u[k])-1 do if x>=0 then
begin
dec(m,x*11*u[k]);
for t:=m div u[k] downto m div u[k]-1 do if (t<10)and((x>0)and
(t>=0))or((x=0)and(t>0)) then begin
dec(m,t*u[k]);
if (k>0)and(m>=0)and(m mod 2=0)and(m>=0)and(m div 2<u[k])
then begin
inc(tot);
list[tot]:=x*10*u[k]+t*u[k]+m div 2;
for i:=1 to tot-1 do if list[tot]=list[i] then
dec(tot);
end else
if (k=0)and(m=0) then begin
inc(tot);
list[tot]:=x*10*u[k]+t*u[k];
for i:=1 to tot-1 do if list[tot]=list[i] then
dec(tot);
end;
inc(m,t*u[k]);
end;
inc(m,x*11*u[k]);
end;
inc(k);
until k>l;
writeln(tot);
for i:=1 to tot do begin
str(list[i],s);
l:=length(s);
str(n-list[i],s);
while length(s)<l-1 do s:='0'+s;
writeln(list[i],' + ',s,' = ',n);
end;
end.