// Pratiyush Mishra #include <bits/stdc++.h> #define ll long long int using namespace std; void mainSolve() { int n; cin >> n; vector<int> v(n); for (int i = 0; i < n; i++) cin >> v[i]; bool odd_present = false; for (int x : v) if (x % 2 == 1) odd_present = true; int ans = 0; if (odd_present) { for (int x : v) if (x % 2 == 0) ++ans; } cout << ans << endl; } int main() { #ifndef ONLINE_JUDGE freopen("input.txt", "r", stdin); freopen("output.txt", "w", stdout); #endif int t; cin >> t; while (t--) { mainSolve(); } return 0; }