func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long t;     cin >> t;     while (t--) {       long long n, q;       cin >> n >> q;       vector<long long> a(n);       for (long long i = 0; i < n; i++) {         cin >> a[i];       }       long long x = 0, y = 0;       for (long long i = 0; i < n; i++) {         y = max(y, x + a[i]);         x = max(x, y - a[i]);       }       cout << max(x, y) << endl;     }     return 0;   }   