10220 - I Love Big Numbers !

Author: Ismail Hosen

Daffodil International University

Problem Link

//Please follow from main function#include<stdio.h>

int main()

{

long long n;

while(scanf("%lld",&n)==1)

{

if(n<0&&n%2==0)

printf("Underflow!\n");

else if(n<0&&n%2!=0)

printf("Overflow!\n");

else if(n==0||n<=7)

printf("Underflow!\n");

else if(n==8)

printf("40320\n");

else if(n==9)

printf("362880\n");

else if(n==10)

printf("3628800\n");

else if(n==11)

printf("39916800\n");

else if(n==12)

printf("479001600\n");

else if(n==13)

printf("6227020800\n");

else if(n>13)

printf("Overflow!\n");

}

return 0;

}