#include <iostream>
using namespace std;

pair <int, int> find(int n, int *a){
    pair <int, int> x;
    x.first = -1;
    x.second = -1;
    for(int i = 0; i < n; ++i)
        if(a[i] == 0)
            if(x.first == -1) x.first = i;
            else{
                x.second = i;
                return x;
            }
    return x;
}

int main()
{
    int *a = new int [10];
    int n,k,i,j,pr=1,iCount = 0;
    pair <int, int> x;
    cout<<"vvedite razmer massiva:";
    cin>>n;
    cout<<"vvedite massiv ";
    for(i=0;i<n;i++)
        cin>>a[i];
    x = find(n, a);

    if (x.first == -1 || x.second == -1)
        cout << "There are no two zero\n";
    else{
        for(i = x.first+1; i < x.second; ++i)
            pr *= a[i];
    cout << pr;}


return 0;
    }