#include <iostream>
#include <climits>
using namespace std;
int main() {
 
	int sum = 0, x, min = INT_MAX; bool one = 1;
 
	while(cin >> x)
	{
 
		if(x == 0)
		{
		   	sum++; one = true;
		}
		else
		{
			if(sum < min and sum != 0 and one) 
				{
					min = sum; 
					cout << min << endl; 
					sum = 0; 
					one = false;
				}
        }
	}
    cout << "Длина самой короткой подпоследовательности равна " << min << "\n";
	return 0;
}

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