Zigzag

input/code.cpp: In function 'int main()':
input/code.cpp:41:11: error: 'sum_segment' was not declared in this scope
  cout << (sum_segment+2) << "\n";
           ^

#include <iostream>
using namespace std;

#define MAX 100000

int main() {
	int n;
	cin >> n;
	
	int sequence[MAX];
	for (int i = 0; i < n; i++)
		cin >> sequence[i];
	
	int sequence_we[MAX], mark_we[MAX];
	int len = 0;
	for (int i = 0; i < n; i++)
		if (sequence[i] != sequence[i+1])
			sequence_we[len++] = sequence[i];
	/*
	for (int i = 0; i < len; i++)
		cout << sequence_we[i] << " ";
	cout << "\n";
	*/
	for (int i = 1; i < len; i++) {
		if (sequence_we[i] < sequence_we[i+1] && sequence_we[i] < sequence_we[i-1])
			mark_we[i] = 1;
			
		if (sequence_we[i] > sequence_we[i+1] && sequence_we[i] > sequence_we[i-1])
			mark_we[i] = 1;
	}
	
	for (int i = 0; i < len; i++)
		cout << mark_we[i] << " ";
	cout << "\n";
	
	/*
	int sum_segment = 0;
	for (int i = 0; i < len; i++)
		sum_segment += mark_we[i];
	*/
	cout << (sum_segment+2) << "\n";
	return 0;	
}