Цик цак секвенца

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class ZigZagSequence {
    static int najdiNajdolgaCikCak(int a[]) {
        int curr = 0, max = 0, i = 0;
        boolean flagP = false;

        while(i < a.length){
            if(a[i] == 0){
                i++;
            }
            else{
                flagP = a[i] > 0;
                max++;
                curr++;
                i++;
                break;
            }
        }

        while(i < a.length){
            if(a[i] > 0&&!flagP){
                curr++;
                flagP = true;
            }
            else if(a[i] < 0&&flagP){
                curr++;
                flagP = false;
            }
            else{
                if(a[i] != 0)
                curr = 1;
                else curr = 0;
                if(i+1 < a.length && a[i] == 0){
                    if(a[i+1] > 0) flagP = false;
                    else flagP = true;
                }
            }
            if(curr > max)
                max = curr;
            i++;
        }

        return max;



    }

    public static void main(String[] args) throws Exception {
        int i,j,k;

        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        int N = Integer.parseInt(br.readLine());
        int a[] = new int[N];
        for (i=0;i<N;i++)
            a[i] = Integer.parseInt(br.readLine());

        int rez = najdiNajdolgaCikCak(a);
        System.out.println(rez);

        br.close();

    }

}