1 files changed, 48 insertions, 0 deletions
diff --git a/contests/Round828/Round#828/C/main.cpp b/contests/Round828/Round#828/C/main.cpp
new file mode 100755
index 0000000..a69f265
--- /dev/null
+++ b/contests/Round828/Round#828/C/main.cpp
@@ -0,0 +1,48 @@
+#include<bits/stdc++.h>
+
+using namespace std;
+
+int main () {
+	ios_base::sync_with_stdio(false);
+	cin.tie(NULL);
+	int tt;
+	cin >> tt;
+	while(tt--) {
+    int n;
+    cin >> n;
+    int m = 0, mx = 0;
+    for (int i = 0; i < n; i++) {
+      int x;
+      cin >> x;
+      while (x % 2 == 0) {
+        x /= 2;
+        m += 1;
+      }
+    }
+    if (m >= n) {
+      cout << 0 << '\n';
+    } else {
+      int d = n - m, ans = 0;
+      vector<int> a;
+      for (int i = n; i >= 1; i--) {
+        int j = i, cnt = 0;
+        while (j % 2 == 0) {
+          cnt += 1;
+          j /= 2;
+        }
+        if (cnt != 0) {
+          a.push_back(cnt);
+        }
+      }
+      sort(a.rbegin(), a.rend());
+      for (int i = 0; i < (int)a.size(); i++) {
+        ans += 1;
+        d -= a[i];
+        if (d <= 0) {
+          break;
+        }
+      }
+      cout << (d <= 0 ? ans : -1) << '\n';
+    }
+	}
+}