10323 - Factorial! You Must be Kidding!!!

[Jan]

13! = 6227020800, which exceeds integer limit.

[Obaida]

Some one please help me I am getting CE.....

Code: Select all

#include<stdio.h>
int main()
{
	long double fact,i,n,count;
	while(scanf("%Lf",&n)==1)
	{
		fact=1;
		count=1;
		for(i=1;i<=n;i++)
		{
			fact=fact*i;
			if(fact>6227020800)
			{
				count=0;
				printf("Overflow!\n");
				break;
			}
		}
		if(count!=0)
		{
			if((fact/1000)<1)
			{
				printf("Underflow!\n");
			}
			else
			{
				printf("%.0Lf\n",fact);
			}
		}
	}
	return 0;
}

[emotional blind]

Obaida, I submitted your code, and got Wrong answer. Did you select proper language option before submit?

[Obaida]

some one please help me still I got WA....

[emotional blind]

So did you get accepted?

[Obaida]

But still........I got WA... Hear is my code........

Code: Select all

Code removed
}

[emotional blind]

try this input

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7

[Obaida]

Code: Select all

Actually I mistake to read the problem......HA....Ha...Ha...

[emotional blind]

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Actually I mistake to read the problem......HA....Ha...Ha...

Are you happy with that? or proud?

[Obaida]

My smile doesn't meen my happyness or my proud... It means How much I had to be careful.

[emotional blind]

Be Careful, Be Happy

[chenaren]

1/0 is not defined rather than infinite

the problem may have bad influence on the mathematical concept of the solver

[sefakilic]

I've read all posts in this topic.

I believe that I am doing right, but unfortunately I don't. I am getting WA.

Here is my code:

Code: Select all

#include "stdio.h"

unsigned long iter_factorial(int n) {
    unsigned long accu = 1;
    unsigned long i;
    for(i = 1; i <= n; i++) {
        accu *= i;
    }
    return accu;
}

int main() {
	
	unsigned long x;
	int a;
	while( scanf("%d", &a) != EOF )
	{
		if( a <= 7 && a >= 0)
			printf("Underflow!\n");
		else if(a > 13)
			printf("Overflow!\n");
		else if(a < 0)
		{
			if( a / 2 * 2 == a)
				printf("Underflow!\n");
			else 
				printf("Overflow!\n");
		}
		else {
			x = iter_factorial(a);
			printf("%lu\n",x);
		}
	}
	
	return 0;
}

Thank you..

[Obaida]

I didn't checked your code. But i think you should use long long.

[sefakilic]

My factorial function calculates the factorials of numbers between 8 and 13 [including them]. But I was getting WA.

I replaced the factorial function with the precalculated values. ( if (x == 8 ) printf("...") .....)

And I got AC.