458 - The Decoder

[CDiMa]

I get Output Limit Exceeded
WHY???

here is my code:
[c][...]
while(scanf("%c",&c)!=NULL)
[/c]

scanf returns the number of items assigned or EOF. Check against 1 (since you are reading only one character) or EOF.

[c][...]
i=1;
}
i++;
}[/c]

After the first line you start with i=2.
So you are printing 1 char in excess for every line after the first.

Ciao!!!

Claudio

[midra]

Thank you very much Dejarik and CDiMa.
I finally got AC...I just have to change NULL to EOF and i=1 to i=0

Dejarik Wrote:
PD: Why do you need an array to store chars if you manage them individually with scanf((char))? Try to store each char readed in a simple char variable and then print it with -7 ascii code. It should also works saving a lot of memory space, isn't it?

sorry for my ignorance but I am a newcomer in this field...I learn C about three or four months... I don't know what you mean...
Can you give me an example, please???
thanks a lot!!

Pd: Claudio? Where are you from? Are you from Argentina?? In my country it's a very common name...

Byeee and good luck.

Michel

[CDiMa]

Pd: Claudio? Where are you from? Are you from Argentina?? In my country it's a very common name...

Nope, I'm Italian

Ciao!!!

Claudio

[Larry]

The "good" way to do it (the way I do it anyhow) is this:

Code: Select all

while ( 1 == scanf("%c", &t ) )

So either it returns EOF or doesn't read an character, it'll exit the loop..

[midra]

Thank you larry!!!


good luck!bye

[wyanez]

You need to take into account the characters \n (13) and \r (10) (they do not in rank > = the 39 and > = 126 ).
this code it is sufficient:

[java] while((c=System.in.read())>=0){
if(c!=13 && c!=10) car=(char) (c-7);
else car=(char) c;
System.out.print (car);
}
[/java]

Good Luck!

[Zoe]

Hi everyone.
I don't know why always take WA.
Please give me some hints.
Thanks!

[c]
#define max 1000

#include <stdio.h>

main()
{
int i;
char pwd[max];

while ( fgets(pwd, max, stdin) )
{
for ( i = 0 ; i < max ; i++ )
{
if ( pwd == '\0')
break;

pwd = pwd - 7;
printf("%c", pwd);
}

printf("\n");
}

}
[/c]

[abishek]

fgets also stores the newline character in the array.
so you were also printing the '\n'-7.
and the judge only compares the files literally, and so you got WA.
i did the follwing and got AC

made max 2000000
replaced pwd=='\0' by pwd=='\n'
and got AC

all the best
abi

[Zoe]

Thanks abishek!
I got AC.

[pipo]

my c++ code run 0.2 sec.. but, some codes only 0.0xxx... why ??

my code is very simple...

who can help me ?

Code: Select all

#include <stdio.h>

void main(void)
{
	char line[512];
	int i;

	while ( gets(line) ) 
	{
		i = 0;

		while ( line[i] )
			printf("%c", line[i++]-7);

		printf("\n");
	}
}

[CodeMaker]

Hi, when I solved this problem for the 1st time I was a beginner and the only thing I cared then was to get Ac. my old code was slow, it took
0:00.264 to get Ac.

after I saw your code , i tried to make it faster and got Ac in 0:00.088 and 64 memory
so have a look at this....

Code: Select all

#include<stdio.h>

void main()
{
     char temp;

     while((temp=getchar())!=EOF)
     {
           (temp==10)?putchar(temp):putchar(temp-7);
     }
}

[pipo]

CodeMaker.. thank a lot...

well.... could you please explain to me ???

why is a preformance of two codes wrong ?

in my opinion, two codes are very simple..

in my code, just use gets function..

but, in your code, use getchar and putchar functions..


is this that reason ??

[CodeMaker]

Yes, that's the reason and I also used conditional operators,executed less lines in my code....

many things are behind our eyes and those are written in the structures of different built-in functions that we use....some functions works faster because they work simple....

to speed things up, we also have to consider these things....there must be even batter ways then mine, and that's why people got Ac in 0.00.000 time.

[pipo]

that's good.. i see exactly...

thank you, CodeMaker...

[yogeshgo05]

hi guys,
here's my code
judge says wa
# include <stdio.h>


int main()
{
char ch;
int i;



while((ch=getchar())!=EOF)
{
i=ch-7;
putchar(i);

}

return 0;
}

Code: Select all