[Solved] Lucky Numbers STARTERS 73 CodeChef
![[Solved] Lucky Numbers STARTERS 73 CodeChef](https://realcoder.techss24.com/wp-content/uploads/2023/01/Solved-Lucky-Numbers-STARTERS-73-CodeChef.png "[Solved] Lucky Numbers STARTERS 73 CodeChef")
Chef calls a number lucky if it contains the digit 77 at least once. Given a number XX, determine if it is a lucky number or not. Input Format Output Format For each test case, output YES if XX is a lucky number. Otherwise, output NO. You may print each character of YES and NO in…