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- import java.io.BufferedReader;
- import java.io.InputStreamReader;
- public class ZigZagSequence {
- static int najdiNajdolgaCikCak(int a[]) {
- int najdolga=1;
- int momentalna = 0;
- int kade=2;
- if(a[0] < 0){kade=1; momentalna=1;}else if(a[0] > 0){ kade= 0;momentalna=1;}
- for(int i=1; i<a.length; i++){
- if(kade == 1 && a[i] > 0){
- momentalna++;
- if(momentalna > najdolga)najdolga = momentalna;
- kade=0;
- }else if(kade == 0 && a[i] < 0){
- momentalna++;
- if(momentalna > najdolga)najdolga = momentalna;
- kade=1;
- }else{
- momentalna=0;
- if(a[i] < 0){kade=1; momentalna=1;}else if(a[i] > 0){ kade= 0;momentalna=1;}
- }
- }
- return najdolga;
- }
- 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();
- }
- }
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