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back to boardwhy i get WA (+) help me please. Posted by Badd 14 Jan 2002 10:58 label loop;
var stemp : array[1..30500] of char;
n,l,first,last,now : longint;
count : longint;
yeah : boolean;
begin
count:=0;
readln(n);
for l:=1 to n do
read(stemp[l]);
readln;
first:=1;
last:=n;
loop :
while stemp[first]='<' do inc(first);
while stemp[last]='>' do dec(last);
now:=first;
yeah:=true;
while (now<last) do
begin
if (stemp[now]='>') then
begin
if stemp[now+1]='<' then
begin
stemp[now]:='<';
stemp[now+1]:='>';
now:=now+2;
count:=count+1;
yeah:=false;
end
else now:=now+1;
end else now:=now+1;
end;
if yeah=false then goto loop;
writeln(count);
end. A test for you :) (+) Read the problem carefully. The input string may contain line breaks.
For example, this is a correct test:
4
>>
<
<
I'm sure you'll get AC.
Good luck! Re: oh. i got TL can you or anyone gave me a hint? and this is my code Posted by Badd 15 Jan 2002 20:27 label loop;
var stemp : array[1..30500] of char;
n,l,first,last,now : longint;
count : longint;
yeah : boolean;
begin
count:=0;
read(n);
for l:=1 to n do
repeat
read(stemp[l]);
until (stemp[l]='<') or (stemp[l]='>');
first:=1;
last:=n;
loop :
while stemp[first]='<' do inc(first);
while stemp[last]='>' do dec(last);
now:=first;
yeah:=true;
while (now<last) do
begin
if (stemp[now]='>') then
begin
if stemp[now+1]='<' then
begin
stemp[now]:='<';
stemp[now+1]:='>';
now:=now+2;
count:=count+1;
yeah:=false;
end
else now:=now+1;
end else now:=now+1;
end;
if yeah=false then goto loop;
writeln(count);
end. What is the answer Posted by OZone 20 Feb 2002 20:07 What is the answer - 0 or 4? |
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