#include <iostream>
#include <string>

using namespace std;
int main() {
    long int  sum = 0, min = 999999999;
    string str;
    getline(cin, str);
    for (int i = 0; i < str.size();)
    {
        sum = 0;
        while (str[i] != ' ') {
            sum++;
            i++;
        }
        if (sum < min && sum != 0) {
            min = sum;
        }
        i++;
    }
    if (min == 999999999) {
        cout << sum;
        return 0;
    }
    cout << min;
    return 0;
}