using namespace std;
#include<iostream>
#include<string>
#include<sstream>
#include<ctype.h>
void factorial(unsigned long n,unsigned long k);
int main()
{
    unsigned long counter=0;
    string s;
    unsigned long n;

    while(getline(cin,s))
    {
    counter=0;
    string::size_type position,position2;
    position=s.find(' ');
    string num;
    for(int i=0;i<position;i++)
    {
        if(isdigit(s[i]))
            num+=s[i];

    }
    stringstream ss(num);
    ss>>n;
    position2=s.find('!');
    if(position2==position+1)
    {
       for(int i=position+1;i<s.size();i++)
        if(s[i]=='!')
        counter++;
   factorial(n,counter);
    }

    }
}

void factorial(unsigned long n,unsigned long k)
{
  unsigned long res=1;
  int mod=n%k;
  unsigned long mul=n;
    if(mod!=0)
    {
        while(mul>1)
        {
            res*=mul;
            mul=mul-k;
        }
        cout<<res<<endl;
    }
    else
    {
        while(mul>=k)
        {
            res*=mul;
            mul=mul-k;
        }
        cout<<res<<endl;
    }
}

Edited by author 05.04.2018 15:46

Edited by author 05.04.2018 15:47