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| const MAXLEN=100;
type bigint=array[0..MAXLEN] of longint;
var a,b,c,d:bigint;
operator :=(const str:string) a:bigint;
var k:longint;
begin
fillchar(a,sizeof(a),0);
k:=length(str)-3;
repeat
inc(a[0]);
if k<=0 then val(copy(str,1,3+k),a[a[0]])
else val(copy(str,k,4),a[a[0]]);
dec(k,4);
until (k<=-3);
end;
operator +(const a,b:bigint) c:bigint;
var i,x,larger:longint;
begin
x:=0;
if a[0]>b[0] then larger:=a[0] else larger:=b[0];
for i:=1 to larger do begin
x:=a[i]+b[i]+x div 10000;
c[i]:=x mod 10000;
end;
if x>=10000 then begin
c[0]:=larger+1;
c[c[0]]:=1;
end else c[0]:=larger;
end;
operator +(const a:bigint;const b:longint) c:bigint;
var i,x:longint;
begin
c:=a;
x:=b+a[1];
for i:=1 to a[0] do begin
c[i]:=x mod 10000;
x:=x div 10000+a[i+1];
if x=0 then break;
end;
if x<>0 then begin
inc(c[0]);
c[c[0]]:=1;
end;
end;
operator -(const a,b:bigint) c:bigint;
var i,x:longint;
begin
fillchar(c,sizeof(c),0);
x:=0;
for i:=1 to a[0] do begin
x:=c[i]+a[i]-b[i]+x div 10000;
if x<0 then begin
inc(x,10000);
dec(c[i+1]);
end;
c[i]:=x;
end;
c[0]:=a[0];
while (c[0]>0)and(c[c[0]]=0) do dec(c[0]);
end;
operator *(const a,b:bigint) c:bigint;
var i,j,x:longint;
begin
fillchar(c,sizeof(c),0);
for i:=1 to a[0] do begin
x:=0;
for j:=1 to b[0] do begin
x:=x+a[i]*b[j]+c[i+j-1];
c[i+j-1]:=x mod 10000;
x:=x div 10000;
end;
c[i+j]:=x;
end;
c[0]:=a[0]+b[0];
while (c[0]>0)and(c[c[0]]=0) do dec(c[0]);
end;
operator *(const a:bigint;const b:longint) c:bigint;
var i,x:longint;
begin
fillchar(c,sizeof(c),0);
x:=0;
for i:=1 to a[0] do begin
x:=x+a[i]*b;
c[i]:=x mod 10000;
x:=x div 10000;
end;
c[0]:=a[0];
while x>0 do begin
inc(c[0]);
c[c[0]]:=x mod 10000;
x:=x div 10000;
end;
end;
operator div(const a:bigint;const b:longint) c:bigint;
var i,x:longint;
begin
fillchar(c,sizeof(c),0);
x:=0;
for i:=a[0] downto 1 do begin
c[i]:=(x*10000+a[i]) div b;
x:=(x*10000+a[i]) mod b;
end;
c[0]:=a[0];
while (c[0]>0)and(c[c[0]]=0) do dec(c[0]);
end;
operator =(const a,b:bigint) c:boolean;
var i:longint;
begin
if a[0]<>b[0] then exit(false);
for i:=1 to a[0] do if a[i]<>b[i] then exit(false);
exit(true);
end;
operator >(const a,b:bigint) c:boolean;
var i:longint;
begin
if a[0]<>b[0] then exit(a[0]>b[0]);
for i:=a[0] downto 1 do if a[i]<>b[i] then exit(a[i]>b[i]);
exit(false);
end;
operator >=(const a,b:bigint) c:boolean;
var i:longint;
begin
if a[0]<>b[0] then exit(a[0]>=b[0]);
for i:=a[0] downto 1 do if a[i]<>b[i] then exit(a[i]>=b[i]);
exit(false);
end;
operator <(const a,b:bigint) c:boolean;
var i:longint;
begin
if a[0]<>b[0] then exit(a[0]<b[0]);
for i:=a[0] downto 1 do if a[i]<>b[i] then exit(a[i]<b[i]);
exit(false);
end;
operator <=(const a,b:bigint) c:boolean;
var i:longint;
begin
if a[0]<>b[0] then exit(a[0]<b[0]);
for i:=a[0] downto 1 do if a[i]<>b[i] then exit(a[i]<=b[i]);
exit(false);
end;
procedure print(const a:bigint);
var i:longint;
begin
write(a[a[0]]);
for i:=a[0]-1 downto 1 do begin
if a[i]<10 then write('000') else
if a[i]<100 then write('00') else
if a[i]<1000 then write('0');
write(a[i]);
end;
writeln;
end;
begin
a:='1234567890';
b:='12345678901';
c:='123456789012';
d:='1234567890123';
print(b+a);
print(c-b);
print(d*c);
print(d div 100);
print(a*768);
print(b+22);
writeln((a+b)*c < (d-c)*a);
writeln(a >= b);
writeln(c*100 = d);
writeln(a*c <= b*c);
writeln(a+d > b+c);
a:='2';
b:='3';
c:='4';
print(a+b*c);
print((a+b)*c);
readln;
end.
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