On New Year Festival, Liu Qian’s magic impressed on little WisKey’s heart and he wants to learn some magic to make himself stronger.
One day, he met a cowman named LinLe. Linle is very nice, he told little WisKey the mysteries of magic. Now, little WisKey began to perform the magic to you.
“Hello, Everybody. I have five decimal numbers named a, b, c, d, e, (0 <= a, b, c, d, e <= 9) and I rearranged them, and then combined them into a number, for example <a, b, c, d, e> = a*10000 + b*1000 + c*100 + d*10 + e*1. You know the number of permutations is 5! = 120. So you have 120 numbers in your hands, you can pick a number N from the 120 numbers and calculate the sum S of remain 119 numbers. AHA~, If you tell me the S, I can guess the N~!”
It’s easy? Okay, you can challenge this.