#include <iostream>
#include <limits>

int main() {
    int min_dist = std::numeric_limits<int>::max(), before, now, next, current_dist = 0;
    bool start = false;
    std::cin >> before >> now;
    while (true) {
        std::cin >> next;
        if (next == 0) {
            break;
        }
        if (now > before && now > next) {
            if (!start) {
                start = true;
            } else if (current_dist < min_dist) {
                min_dist = current_dist;
            }
            current_dist = 0;
        }
        ++current_dist;
        before = now;
        now = next;
    }
    if (min_dist == std::numeric_limits<int>::max()) {
        std::cout << 0;
    } else {
        std::cout << min_dist;
    }
    return 0;
}