CSES: add 1632

Author: Pankajcoder1

CSES/Sorting_and_Searching/Movie Festival II.cpp

@@ -0,0 +1,46 @@
+/*
+    written by Pankaj Kumar.
+    country:-INDIA
+*/
+#include <bits/stdc++.h>
+using namespace std;
+typedef long long ll;
+
+
+int solve(){
+    int n,k,ans=0;
+    cin>>n>>k;
+    vector<pair<int,int> > v(n);
+    for(int i=0;i<n;i++){
+        cin>>v[i].second>>v[i].first;
+    }
+    sort(v.begin(),v.end());
+    multiset<int> end_time;
+    for(int i=0;i<k;i++){
+        end_time.insert(0);
+    }
+
+    for(int i=0;i<n;i++){
+        // auto it = upper_bound(end_time.begin(),end_time.end(),v[i].second);  // O(N) complexity
+        auto it = end_time.upper_bound(v[i].second);  // O(log(N)) complexity
+        if(it==end_time.begin()){
+            continue;
+            // no one if free
+        }
+        end_time.erase(--it);
+        ans++;
+        end_time.insert(v[i].first);
+    }
+
+    cout<<ans<<endl;
+    return 0;
+}
+int main()
+{
+    int testCase=1;
+    // cin>>testCase;
+    while(testCase--){
+        solve();
+    }
+    return 0;
+}