unordered_map sometimes better than map:

got TLE with map on Collecting_Numbers_II.cpp but AC with unordered_map
-unordered is good for a lot of requests and a lot of data

CSES - CSES Problem Set/Stick_Lengths.cpp

@@ -0,0 +1,24 @@
+//  Stick Lengths
+
+#include<bits/stdc++.h>
+
+using namespace std;
+using ll = long long;
+
+int main() {
+    int n; cin >> n;
+    vector<ll> in(n);
+    for (auto &e: in) cin >> e;
+    std::sort(in.begin(), in.end());
+    ll target = in[n/2];
+    ll target2 = in[n/2 + 1];
+    ll count = 0, count2 = 0;
+    for (auto e: in) {
+        count += abs(target - e);
+        count2 += abs(target2 - e);
+    }
+    cout << min(count, count2) << endl;
+
+
+    return 0;
+}