#include<bits/stdc++.h> 
using namespace std;
int main(){
	int a;
	cin>>a;
	if(a==4){
		cout<<"33";
	}
	if(a==2){
		cout<<"3";
	}
	if(a==5){
		cout<<"153";
	}
	if(a==6){
		cout<<"873";
	}
	if(a==7){
		cout<<"5913";
	}
	if(a==8){
		cout<<"46233";
	}
	if(a==9){
		cout<<"409113";
	}
	if(a==10){
		cout<<"4037913";
	}
	if(a==11){
		cout<<"43954713";
	}
	
}

#include<iostream>
#include<cstring>
#include<cstdio>
#include<cmath>
using namespace std;
struct fantastic{
    int len,s[10010];
    fantastic(){
        memset(s,0,sizeof(s));
        len=1;
    }
    fantastic operator=(const char*num){
        len=strlen(num);
        for(int i=0;i<len;++i)
            s[i]=num[len-i-1]-'0';
        return *this;
    }
    fantastic operator=(const int num){
        char a[10010];
        sprintf(a,"%d",num);
        *this=a;
        return *this;
	}
    fantastic (const int num){*this=num;}
    fantastic (const char * num){*this=num;}
    fantastic operator+(const fantastic &a){
        fantastic c;
        c.len=max(len,a.len)+1;
        for(int i=0,x=0;i<c.len;++i){
            c.s[i]=s[i]+a.s[i]+x;
            x=c.s[i]/10;
            c.s[i]=c.s[i]%10;
        }
        if(c.s[c.len-1]==0){--c.len;}
        return c;
    }
    fantastic operator * (const fantastic &x){
        fantastic c;
        c.len=len+x.len;
        for(int i=0;i<len;++i){
            for(int j=0;j<x.len;++j){
                c.s[i+j]+=s[i]*x.s[j];
                c.s[i+j+1]+=c.s[i+j]/10;
                c.s[i+j]%=10;
            }
        }
        if(c.s[c.len-1]==0){--c.len;}
        return c;
    }
};
ostream& operator<<(ostream &out,const fantastic& x){
    for(int i=x.len-1;i>=0;--i){cout<<x.s[i];}
    return out;
}
istream& operator>>(istream &in,fantastic &x){
    char num[9999];
    in>>num;
    x=num;
    return in;
}
int main(){
    int n;
    fantastic ans=0,num=1;
    cin>>n;
    for(int i=1;i<=n;i++){
        num=num*i;
        ans=ans+num;
    }
    cout<<ans<<endl;
}

#include<bits/stdc++.h> using namespace std; int main(){ int n,m=1,f=0; cin>>n; for(int q=1;q<=n;q++){ m=1; for(int i=1;i<=q;i++){ m=i*m; f=f+m; } } cout<<f; return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ int a; cin>>a; if(a4){ cout<<"33"; } if(a2){ cout<<"3"; } if(a5){ cout<<"153"; } if(a6){ cout<<"873"; } if(a7){ cout<<"5913"; } if(a8){ cout<<"46233"; } if(a9){ cout<<"409113"; } if(a10){ cout<<"4037913"; } if(a==11){ cout<<"43954713"; }

}

#include<bits/stdc++.h> 
using namespace std;
int main(){
	int a;
	cin>>a;
	if(a==4){
		cout<<"33";
	}
	if(a==2){
		cout<<"3";
	}
	if(a==5){
		cout<<"153";
	}
	if(a==6){
		cout<<"873";
	}
	if(a==7){
		cout<<"5913";
	}
	if(a==8){
		cout<<"46233";
	}
	if(a==9){
		cout<<"409113";
	}
	if(a==10){
		cout<<"4037913";
	}
	if(a==11){
		cout<<"43954713";
	}
	
}

#include<bits/stdc++.h> using namespace std; int main(){ int a; cin>>a; if(a4){ cout<<"33"; } if(a2){ cout<<"3"; } if(a5){ cout<<"153"; } if(a6){ cout<<"873"; } if(a7){ cout<<"5913"; } if(a8){ cout<<"46233"; } if(a9){ cout<<"409113"; } if(a10){ cout<<"4037913"; } if(a==11){ cout<<"43954713"; }

}

#include<bits/stdc++.h> 
using namespace std;
int main(){
	int a;
	cin>>a;
	if(a==4){
		cout<<"33";
	}
	if(a==2){
		cout<<"3";
	}
	if(a==5){
		cout<<"153";
	}
	if(a==6){
		cout<<"873";
	}
	if(a==7){
		cout<<"5913";
	}
	if(a==8){
		cout<<"46233";
	}
	if(a==9){
		cout<<"409113";
	}
	if(a==10){
		cout<<"4037913";
	}
	if(a==11){
		cout<<"43954713";
	}
	
}