#include <bits/stdc++.h>
using namespace std;
int a[20],b[20],n,c;
char f[20];
string s="+-*";
void pd(){
    for(int i=1;i<=n;i++){
        b[i]=a[i];
    }
    for(int i=1;i<=n-1;i++){
        if(f[i]=='*'){
            b[i+1]=b[i+1]*b[i];
            if(f[i-1]=='-') b[i+1]=b[i+1]*-1;
            b[i]=0;
        }
    }
    int s=b[1];
    for(int i=2;i<=n;i++){
        if(f[i-1]=='+'||f[i-1]=='*') s=s+b[i];
        else if(f[i-1]=='-') s=s-b[i];
    }
    if(s==24){
        c++;
    }
}
void dfs(int k){
    for(int i=0;i<s.size();i++){
        f[k]=s[i];
        if(k==n-1){
            pd();
        }else{
            dfs(k+1);   
        }
         
    }
}
int main(){
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>a[i];
    }
    dfs(1);
    cout<<c;
    return 0;
}
 
/**************************************************************
	Problem: 1956
	User: wangchenyu
	Language: C++
	Result: Accepted
	Time:66 ms
	Memory:2072 kb
****************************************************************/