Getting an A

Author: seikhchilli

991B.cpp

@@ -0,0 +1,23 @@
+#include<bits/stdc++.h>
+using namespace std;
+
+int main(){
+  ios_base::sync_with_stdio(false);
+  cin.tie(NULL);
+
+  int n;
+  cin>>n;
+  int arr[n], score = 0;
+  for(int i = 0; i < n; i++){
+    cin>>arr[i];
+    score += arr[i];
+  }
+  int req_score = ceil(4.5 * n) - score;
+  sort(arr, arr+n);
+  int i = 0;
+  while(req_score > 0){
+    req_score -= 5 - arr[i];
+    i++;
+  }
+  cout<<i;
+}