OJ Board

Master wrote:Yes, I agree with seadoo.
one digit of m and two digits of n are enough.

M H Rasel
CUET Old Sailor

I know the trick of finding the repeated sequence of [the last digit of m] poweres n to get the same correct answer, but could anyone please explain why the last two digits of n is enough?

This is my WA code.
[code] int number=0;
char printchar;
string line;

getline(cin, line);
while(cin.good()){
int len = line.length();
for(int i=0; i<len; i++){
if(isdigit(line[i]))
number += int(line[i]-'0');
else{
printchar = line[i];
if(printchar == 'b')
printchar = ' ';
else if ...

Thank you. I got AC.
I should have examined my code more carefully.

My code is:

#include <iostream>
using namespace std;

int FindMinBase(char *number)
{
int max=0, temp;
char *current=number;
while(*current!='\0')
{
if(*current>='0' && *current<='9')
temp=(int)(*current-'0');
else
temp=10+(int)(*current-'A');
if(temp>max)
max=temp;
current++;
}
if(max ...

The following is my code, could anyone figure out why I always got WA?

[cpp]
#include <iostream>
#include <cctype>
using namespace std;

void main()
{
char read_in[3000], *ptr;
short repeat, i;

cin.getline(read_in, 3000);
while(cin.good())
{
ptr=read_in;
repeat=0;
while(*ptr!='\0')
{
if ...

[quote="xenon"]No, the sample output is right. The order in which the terms are counted is:
[code]
1 2 6 7 15
3 5 8 14
4 9 13
10 12
11
[/code]
for the first 15 terms. It's a zig-zag![/quote]

I thoutht I made the same mistake!
But I think the description should be a little clearer.

Invalid memory reference!!
I declared a char array that contains 1 million units.
I wonder if it caused the error!

I got a WA. Can anyone help me figure out why?

[cpp]#include<iostream>
#include<iomanip>
#include<math.h>
using namespace std;

void main()
{
long input, sum, factor, factor2, sq;
cout << "PERFECTION OUTPUT" << endl;
cin >> input;
while(input)
{
sum=1, factor=2;
sq=(long)sqrt(input);
if((sq ...

I'm sure I've prevented "t_base" from being 1, since before this part I have an "if" to handle the problem directly when there is only ONE working cat. For example, when I input "64 1", I will get "6 127", right answer, isn't it? Or did I ignored any other "except" situations? :roll:

I have tried lots of inputs (partly from the Problemset Archive and partly from some discussions about q107) by hand and it always gave me right answers. I can't figure out why I should get "float point exception."

The followings are the considered most "fragile" part in my code. I hope someone can ...

Sometimes the description of the problems really confuses me. For example, q477 should be a very easy one; after I enlarged my array size (for example, double something[10000]), I got "accepted" response. However, the description didn't mention it would be rejudged. Insted, it clearly mentioned ...

Some of my programs work well in my computer, but I will get a "Invalid Memory Reference" crash message. What does it mean? How could I fixed the problem?

My program works well in my computer, but I always get a "Inavlid memory reference" crash message. I can't figure out why. Maybe someone could help me?

---------------------------------------------------------------------------

#include<stdio.h>
#include<stdlib.h>
#define RECTANGLE 1
#define ...