451. Lemonade Change
EasyGreedySimulation
Lemonade costs 5. Customers pay with 5, 10 or 20 notes in order, and you start with no change. Print YES if you can give everyone correct change, else NO.
Input format
Line 1: n Line 2: n bills
Output format
YES or NO
Example 1
Input
5 5 5 5 10 20
Output
YES
Example 2
Input
5 5 5 10 10 20
Output
NO
Constraints
1 ≤ n ≤ 10⁵
Read input from standard input and print the answer to standard output. Your code is judged against 4 test cases, most of them hidden.
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