WEBSITE RETURNED, TUY NHIÊN SỐ LƯỢNG SUBMIT BỊ GIỚI HẠN MỖI NGÀY CÒN RẤT ÍT (UNDER JUDGE0 NEW POLICY, API PROVIDER). Therefore it is very much for you to pay attention TEST CAREFULLY CODE BEFORE SUBMIT.
Threads: Please enter a number that 1 the month of the year, print see how many days of the month. Regarded as the month 2 always 28 day. Input: An integer. Output: Number of days in a month. If the month is invalid, then print out “NOT FOUND”.