Create chef and Icecream.cpp

Author: Prince-1501

chef and Icecream.cpp

@@ -0,0 +1,50 @@
+//
+//  COMPETITIVE PROGRAMMING .cpp
+//
+//  Created by Prince  Kumar on 15/06/2020.
+//  Copyright © 2020 Prince  Kumar. All rights reserved.
+//
+//                       ---** COMPETITIVE PROGRAMMING in C++ **---
+//                            ---** PRACTICE CODING SKILLS **---
+//                               ---** CHEF AND ICECREAM **---
+
+
+#include <iostream>
+using namespace std;
+int main(){
+    int T; cin>>T;
+    while(T--){
+        int n; cin>>n;
+        int a[3]= {0,0,0};  // 5 10 15
+        int check=0;
+        for(int i=0;i<n;i++){
+            int x; cin>>x;
+            
+            if(x==5){
+                a[0]+=1;
+            }else if(x==10){
+                if(a[0]>=1){
+                    a[1]+=1;
+                    a[0]-=1;
+                }else{
+                    check++;
+                }
+            }else{
+                if(a[1]>=1){
+                    a[2]+=1;
+                    a[1]-=1;
+                }else if(a[0]>=2){
+                    a[2]+=1;
+                    a[0]-=2;
+                }else{
+                    check++;
+                }
+            }
+        }
+        if(check==0){
+            cout<<"YES"<<endl;
+        }else{
+            cout<<"NO"<<endl;
+        }
+    }
+}