OJ Board

The problem seems simple enough, but why so many WA's on this question, and why do I keep getting WA ?

I compare digits of both input:
If not equal then the answer is WA
I compare inputs in entirety:
If not equal then the answer is PE
Otherwise the answer is AC

A lot of people in the comments are making comments about spaces and \n's but this is not what the question is stating. The question clearly states:
ALL characters must match and must be in the same order
and ALL has been put into capitals for emphasis. Removing spaces and \n's does not help. (note: backslashes might not show up in forum)

So can anyone confirm what is wrong with this one ? Presumably there is some bad judge data here ?

How do you read input? If you're using scanf() you can get incorrect results (PE instead of AC), so best choice is to use only gets().

Actually I am using gets...... and I just thought a bit more carefully about this and realised that gets removes the newline character which was causing my problem since I simply concatenated all input together without newlines. Added a strcat(lines,"\n") before adding the next line and it works perfectly

Was mislead by peoples comments in their tag lines.....

i got WA again and again,please help me?what's the problem?or give me some sample input and output?

#include "iostream.h"
#include "string.h"
#include "stdio.h"
#include "fstream.h"

void noblank(char str[])
{
long l=strlen(str);
long i,j;
for(i=0;i<l;i++)
{
if(!(str>='0'&&str<='9'))
{
for(j=i;j<l-1;j++)
{
str[j]=str[j+1];
}
l--;
str[l]='\0';
i=-1;
}
}
}

void main()
{
bool ac,wa,pe;
long index=1;
long n;
while(cin>>n)
{
if(n==0)
break;
ac=wa=pe=false;
char table[12000];
strcpy(table,"");
long i=0;
while(i<n)
{
char t=getchar();
if(t=='\n')
i++;
char tt[2];
tt[0]=t;
tt[1]='\0';
strcat(table,tt);
}
long nn;
cin>>nn;
char tab[12000];
strcpy(tab,"");
i=0;
while(i<nn)
{
char t=getchar();
if(t=='\n')
i++;
char tt[2];
tt[0]=t;
tt[1]='\0';
strcat(tab,tt);
}
if(strcmp(table,tab))
{
noblank(table);
noblank(tab);
if(!strcmp(table,tab))
{
pe=true;
}
else
{
wa=true;
}

}
if((!wa)&&(!pe))
ac=true;
if(wa)
cout<<"Run #"<<index<<": Wrong Answer"<<endl;
if(pe)
cout<<"Run #"<<index<<": Presentation Error"<<endl;
if(ac)
cout<<"Run #"<<index<<": Accepted"<<endl;
index++;
}



}

what is the output if my input is:
3
Input Set #1: YES
Input Set #2: NO
Input Set #3: NO
4
123
ABCDE FG
hij k
lmn
0

I get runtime error sigsegv for this
what is invalid memory reference? could anyone helped me out?
I used 4 char array with 1000 array of element each for this problem.

Can anyone who got AC put some test cases?
I got WA but I do not know what is wrong. Thanks.

ok I've taken care of sigsegv, now I get WA like everyone else here, well except for Caesum and Ivan of course, it run 0.025 sec before it declared to be WA.
ummm, same question with yatsen pls

I think that input reading routine is a most important part in this problem. Once you've read everything correct, everything else is trivial.

In my accepted solution this part looks like:[c] while (gets(s) != NULL) {
n1 = atol(s);
if (n1 == 0) break;
p1 = (char *)malloc(128 * n1);
for (i=0; i<n1; i++) gets(&p1[i*128]);
gets(s);
n2 = atol(s);
p2 = (char *)malloc(128 * n2);
for (i=0; i<n2; i++) gets(&p2[i*128]);
...
}[/c]Now you can compare these strings like:[c]if (strcmp(&p1[index1*128], &p2[index2*128])) ...[/c]And, of course, don't forget to free p1 & p2 after calculations.

And correct answer for dabendan's input is PE.

aaaaah

I've found my mistake , after changing the line

strcpy (result,"");

into

for (i=0;i<MAX;i++)
result = '\0';

it get accepted right away.
and also I used the strcat (result,"\n") like Caesum said
it worked out fine.

let me give sample input
3
adfs df 1 dasf adf df
2
fs aaaaaaaaaaaa 3
3
aa1
2
3

sample output
Run #1: Presentation Error

Ivan Golubev wrote:I think that input reading routine is a most important part in this problem. Once you've read everything correct, everything else is trivial.

Yes, you are right. After I change my while(scanf("%d\n",&n)==1) to while(gets(line)!=NULL), I got AC.

But my check order is different from Caesum's.
I check AC first, then check PE, otherwise WA.
I think it is easier for me.

After changing the way as yatsen does , I got AC.

But I still don't know why can't use Could anyone explain it clearly? Maybe some examples are helpful.

Thanks!

scanf("\n") does not only read one '\n' character, it does read all whitespace characters. Try it out!

Oh , I see . Thank you very much!