OJ Board

Posted: **Wed Jul 04, 2007 3:09 pm**

How comes 1 a prime number?????????!!!!!!!! that is really funny and joking.

Posted: **Mon Jul 09, 2007 9:48 pm**

it show prime num 1
but still Wrong answer
plz help for

deleted

thanks
but in upper post
1,3,5...... odd number denoted by prime number
so i thought 2 is not prime

Posted: **Mon Jul 09, 2007 11:48 pm**

u need to check ur code again.it need too many modification....
u do p[2]=false but 2 is prime....
again u loop from 3 up to 35....but what happen for 4,8,....it is not prime too.
and ur sum is also incorrect for UPPERCASE.check it.

GOOD LUCK
Rocky

Posted: **Wed Aug 01, 2007 7:10 am**

excuse me ,can anyone tell me why I got a WA?
because I can't find where I do wrong .
thanks in advance

and sorry for my poor English..

Code: Select all

#include<stdio.h>
#include<math.h>
#include<string.h>
int main()
{
    
    char word[21];
    double sum=0;
    int i,y,factor;
    
    
       
    
    while(gets(word) != NULL)
    {
       factor=0;
       
       for(i=0;i<20;i++)
       {
          if(word[i]>='a' && word[i]<='z')
              sum = sum +(word[i]-96);
          else if(word[i]>='A' && word[i]<='Z') 
              sum = sum +(word[i]-38);
       }
       
       for (y = 2; y <= sqrt(sum); y++)
       {
         if ( fmod(sum,y)==0 )
          factor++;
       }
       
       if (factor == 0)
          printf("It is a prime word.\n");
       else
          printf("It is not a prime word.\n");
          
       
          
     }
    
    return 0;
}

Posted: **Wed Aug 01, 2007 7:51 am**

Try this case..

Code: Select all

a
b
c
d
e
A
B
C
D
E

My output is..

Code: Select all

It is a prime word.
It is a prime word.
It is a prime word.
It is not a prime word.
It is a prime word.
It is not a prime word.
It is not a prime word.
It is a prime word.
It is not a prime word.
It is a prime word.

Posted: **Wed Dec 05, 2007 7:17 am**

Code: Select all

removed*

can anyone help me? i don't know why i got WA for this.

Posted: **Wed Dec 05, 2007 8:23 am**

gets returns NULL instead of EOF at the end of input..

PS. remove your code after AC..

Posted: **Wed Dec 05, 2007 12:30 pm**

helloneo wrote:gets returns NULL instead of EOF at the end of input..

PS. remove your code after AC..

thx for helping~ but i still get WA after i changed the EOF to NULL

Posted: **Wed Dec 19, 2007 5:33 pm**

It is very simple problem.
Use the ASCII value & subtract to generate the number check number is prime or not.
For reducing the time u will generate all the prime of the given range before.

Posted: **Mon Dec 24, 2007 9:44 pm**

hi!, this is my code

Code: Select all

/* Prime Words */

REMOVED, got AC

I tried all the single letters, the example cases, the test cases here, and I still getting WA with almost no time (sometimes 0.010 or other times 0.000), I also tried not to print the '\n' at the end

Code: Select all

if (1)
			printf("\n");

changed by

Code: Select all

if (c!=EOF)
			printf("\n");

and it is the same.

Please HELP!!!

I have SOME ADVICES!

an EMPY string should NOT to print ANYTHING

1 is prime

print a \n after ALL cases

[/quote]

Posted: **Wed Oct 29, 2008 12:50 am**

Posted: **Sun Dec 28, 2008 12:34 am**

whats wrong with this code!!!!!!!!!

i got WA.
try my best.but cant find the problem.
plz plz someone help.
here is my code

Code: Select all

removed after being AC.

Posted: **Sun Dec 28, 2008 3:32 am**

sazzadcsedu wrote:whats wrong with this code!!!!!!!!!

i got WA.

Oh really? I think you should have got compile error with the code you've posted.

After you fix it, you might want to check again this part of your code:

Code: Select all

				  memset(prime,0,sizeof(prime));

				    for(i=2;i<=20;i++)

					   {
						   for(j=2;j<=60;j++)

						   {   
							   prime[i*j]=1;

                                                   }
					  }

E.g. 1018=2*519 is composite, but your code would claim it's not.

Horrible indenting, btw. If it's not caused by a forum bug (tab=3 spaces), I think you really need to learn some good indenting style.

Posted: **Sun Dec 28, 2008 8:48 pm**

Infact i made a stupid mistake.
but now got AC.
thanx a lot mf.
need ur help later(comming!!!).

Posted: **Thu Jan 21, 2010 8:28 am**

Please help me.....

Here is my code.

Code: Select all

Removed after got AC

please help me....

Please check my code or give me a sample of test data...

OJ Board

10924 - Prime Words

why wa

10924 WA

WA I don't know why!

Re: 10924 - Prime Words

Re: 10924 - Prime Words

Re: 10924 - Prime Words

Re: 10924 - Prime Words

10924 - Prime Words