func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, i;     long long sum = 0, z = 0, s = 0, m = 0, mm = 0;     cin >> n;     vector<long long> a(n);     for (i = 0; i < n; i++) cin >> a[i];     for (i = 0; i < (n - 1); i++) {       if (i % 2 == 0)         sum = sum + abs(a[i + 1] - a[i]);       else         sum = max(z, sum - abs(a[i + 1] - a[i]));       m = max(m, sum);     }     for (i = 1; i < (n - 1); i++) {       if (i % 2 == 1)         s = s + abs(a[i + 1] - a[i]);       else         s = max(z, s - abs(a[i + 1] - a[i]));       m = max(s, m);     }     cout << m;   }   