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## Discussion of Problem 1402. Cocktails

Please tell me what is wrong in my programm???????????!!!!
Posted by Atbasar(GBK) 8 Jan 2010 22:05
#include <iostream.h>
long int fac(long int k)
{
int i,total=1;
if(k==0)
{
return 1;
}
for(i=1;i<=k;i++)
{
total*=i;
}
}
int main()
{
long int n,total=0,i;
cin>>n;
{
if(n<14)
{
for(i=2;i<=n;i++)
{
total+=fac(n)/fac(n-i);
}
cout<<total<<endl;
}
}
if(n>14&&n<17)
{
for(i=2;i<=n;i++)
{
total+=fac(n)/fac(n-i);
}
cout<<total<<endl;
}
if(n==14)
{
cout<<"87178291200"<<endl;
}
if(n==17)
{
cout<<"355687428096000"<<endl;
}
if(n==18)
{
cout<<"6402373705728000"<<endl;
}
if(n==19)
{
cout<<"121645100408832000"<<endl;
}
if(n==20)
{
cout<<"2432902008176640000"<<endl;
}
if(n==21)
{
cout<<"51090942171709440000"<<endl;
}
return 0;
}
Re: Please tell me what is wrong in my programm???????????!!!!
Posted by Ras Misha [t4ce] 8 Jan 2010 23:44
for example for 21 answer is 138879579704209680000