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.