OJ Board

is this correct the 1500th ugly number is 2999.
please say me anyone.
here is code where is error;
#include<stdio.h>
#include<iostream>
#include<vector>
using namespace std;
vector<long>ugly;
vector<long>list;
vector<long>::iterator it;
vector<long>::iterator u;

void primegenerate(long n ...

when will be the input stops?
tell me.
my code....
#include<stdio.h>
#include<iostream>
using namespace std;
int main()
{

char a[100][100];

int max=0;
int flagnull[100];
int i=0;
while(gets(a ))

{
if(a [strlen(a )-1]==9)
{

if(strlen(a )<=1)
break;
a [strlen(a )-1]='\0';

i++;
break ...

WHY TIME LIMIT EXCEEDED!!!!!
PLEASE HELP!
#include<iostream>
#include<stdio.h>
int counter;
using namespace std;
int retcounter(long n)
{

counter=1;
while(n!=1)
{
counter++;
if(n%2==0)
n=n/2;
else
n=3*n+1;
}
return counter;
}
int main()
{
unsigned long start,end,n,temp;
int max=1;
while ...