OJ Board

oops

Wouldn't this,
[cpp]while(!(cin.eof()))
{
cin >> i >> j;[/cpp]

workt the same as
[cpp]while(cin >> i >> j)[/cpp]

Well, you were right. I made the correction and the program was accepted.

Some problems are test a few input data. If these problem need

simple algorithm or low time complexity solution, then these

problem's run times are extremely fast. So I think that 0.000 sec

is a possible time. But I also know that some people can cheat

their code. -_-;

As I know, they work differently since eof() functions (including feof() in C) return true AFTER they have REACHED the actual end of file. So, we need to access the end-of-file location by trying to read. THEN the eof() functions will return true..

Try a little code for each one, and you'll get it..[/cpp]

@begin_of_source_code
/* @JUDGE_ID: 22306NP 100 C++ */
#include<iostream.h>
unsigned int i,j;
unsigned int index[1000001];
int cacu(unsigned int k)
{
unsigned int s=k;
if(s==1)return 1;
int num=0;
while(1)
{
if(s<k)
{
return (index[s]+num);
}
if(s%2==1){s=3*s+1;num++;}
else if(s%2==0){s=s/2;num++;}
}
}
void init()
{
int unsigned k1;
for(k1=1;k1<=1000000;k1++)
{
index[k1]=cacu(k1);
}
cout<<index[55]<<endl;
}
void mywork()
{
unsigned int k1,k2,sum=0;;
for(k1=i;k1<=j;k1++)
{
k2=index[k1];
if(sum<k2)sum=k2;
}
cout<<i<<" "<<j<<" "<<sum<<endl;
}
int main()
{
init();
while(cin>>i>>j)
{
if(i>j)
{
int temp=i;i=j;j=temp;
}
mywork();
}
return 0;
}
@end_of_source_code

every time i send this program, judge rely that " Wrong Answer". But it run correctly in my computer.can any one tell me what is the problem?


/*@judge_id: 22085KW 100 C */
#include<stdio.h>
int A(unsigned long int x);
void main()
{
int p,i,j,max=0,g,iReal,jReal;
scanf("%d %d\n",&i,&j);
iReal=i;jReal=j;
if (i>j)
{g=i;i=j;j=g;}
for (g=i;g<j+1;g++)
{
p=A(g);
if (p>max) max=p;
}

printf("%d %d %d\n",iReal,jReal,max);
}
int A(unsigned long int x)
{
int q=0;
an:
if (x==1){q++;return q;}
else if(x%2==1)
{x=3*x+1;q++;goto an;}
else
{x=x/2;q++;goto an;}

}
/*@end_of_source_code*/

Why do you have such line in your code ? in init function ?? In my opinion this may cause error ....

Best regards
Dominik

Well, your code seems to handle only one test-case ...

-turuthok-

Don't forget when you already handle >1 test-case, print a new-line after the result of each test-case.

-turuthok-

Well I don't know how to stop the cicle the gets the input. I've tried this but it doesn't seem to work.

[c]while(scanf(" %ld %ld", &i[n] &j[n]) == 2)
{
n++;
}
[/c]

I'd apreciate some help... Thanx[/c]

hello there fOOd_aCe. about your code,
initialize n=0 at the start, and of course, put a comma between &i[n] and &j[n].

it should work ....
BTW I use scanf("%d %d" ..... without any leading spaces ....

your construction is very good and optimal for C - scanf returns number of successfully readed fields, also if you read 2 fields and got value of 2 as scanf'sreturn - it's correct.... in any other case you terminate loop statement ....

Best regards
Dominik

Why does the judge tell me its the wrong answer. (Your program has not solved the problem. It ran during 4.820 seconds.) I get correct answers in Visual C++. Does anyone have any suggestions on how to correct my problem?

Thanks,
Rob
[cpp]
/* @JUDGE_ID: XXXXXX 100 C++ */
@BEGIN_OF_SOURCE_CODE
#include <iostream>
using namespace std;
int main() {
register long int n,i,j,k,l,c;
while(cin >> i >> j) {
if(i>j) {
k=i;i=j;j=k;
}
l=0;
k=i;
for (k;k<=j;k++) {
n=k;
c=0;
while (1) {
c++;
if (n==1) {
break;
}
if (n%2==1) {
n=(3*n)+1;
} else {
n/=2;
}
}
if (c>l) {
l=c;
}
}
cout << i << " " << j << " " << l << endl;
}
return 0;
}
@END_OF_SOURCE_CODE[/cpp]

Most of the times, the Online Judge is the one who's correct ...

Hint: Please read the first sentence on the "The Output" section.

-turuthok-