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Yeah, I've solved this problem by just fixing double to int....Thank you very much!!

Why are you using floating-point numbers? They're very slow and totally unnecessary here.

And for this you should've got runtime error:
freopen("583.in","r",stdin);
Ever heard of standard input/output redirection?

Since the problem depicts that the range of the input g is -2^31 ~ 2^31, I think ...

I've tested all the test case and all the outputs all correct, but I can not understand why I always got Time Limit Exceed....Could someone give me a great help please?? Thanks a lot!!!!! :cry:

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

void Calculate_Prime(double input, long int ...

mf wrote:Don't ever use feof.
Check the return value of scanf instead.

I've got the right answer!!! The reason why I got failed is that I did not check the return value of scanf. Anyway, thank you very much.

I do not know why my code is always WA when submission, could someoen help me, please?Thanks. :(
Below is my code:

#include <stdio.h>
#include <stdlib.h>
#define isInRange(x) (x>0 && x <1000000)
int process_problem(long input)
{
int number = 0;
while(input!=1)
{
number++;
if((input%2)==1 ...