I am so surprised and sad to hear that my answer code was skipped.I was warned that I maybe disobey the rules. I am baixiao,and Hero001 is my classmate. We are in the same university . His python is taught by me, so the style is similar to mine.After the match,I received a email said a rules violation,the contents follow will explain what happened. Before the competition, we brushed LEV OJ together, and there was a problem "Error Number", and my solution method at that time was similar to this problem, that is, to solve it with a combination number. I wrote a function to find combined numbers (because I didn't know the automatic function for combining numbers in Python) and shared it with Hero001. Note that we did “Wrong Numbers” much earlier than this match.This follow two codes are the solution codes for the problem at that time and for this match. The code of "Wrong Number" k=dict() answer=dict() def jiecheng(x): _ t=1_ _ for i in range(2,x+1):_ _ t*=i_ _ return t_ def C(x,i): _ return int(jiecheng(x)/(jiecheng(x-i)*jiecheng(i)))_ n=int(input()) for i in range(n): _ k[i]=int(input())_ _ s=[int(x) for x in input().split()]_ _ target=10-k[i]_ _ answer[i]=6*C(target,2)_ for i in range(n): _ print(answer[i])_ the code of this match: pan=[] t=0 def jiecheng(x): ** t=1** ** for i in range(2,x+1):** ** t*=i** ** return t** def C(x,i): ** return int(jiecheng(x)/(jiecheng(x-i)*jiecheng(i)))** n=int(input()) for i in range(0,n): ** t+=(-1)**(n-i-1)*C(n,i)*pow(10,i)** pan.append(t) for i in range(len(pan)): ** print(pan[i])**__

We can easily see that in this competition, we coincidentally thought of this source code, a coincidence has occurred due to the use of a common source published before the competition, and we all used this function to solve the problem, resulting in a high degree of similarity in the final code.

I am baixiao,and Hero001 is my classmate. We are in the same university . His python is taught by me, so the style is similar to mine.After the match,I received a email said a rules violation,the contents follow will explain what happened. Before the competition, we brushed LEV OJ together, and there was a problem "Error Number", and my solution method at that time was similar to this problem, that is, to solve it with a combination number. I wrote a function to find combined numbers (because I didn't know the automatic function for combining numbers in Python) and shared it with Hero001. Note that we did “Wrong Numbers” much earlier than this match.This follow two codes are the solution codes for the problem at that time and for this match. The code of "Wrong Number" k=dict() answer=dict() def jiecheng(x): _ t=1_ _ for i in range(2,x+1):_ _ t*=i_ _ return t_ def C(x,i): _ return int(jiecheng(x)/(jiecheng(x-i)*jiecheng(i)))_ n=int(input()) for i in range(n): _ k[i]=int(input())_ _ s=[int(x) for x in input().split()]_ _ target=10-k[i]_ _ answer[i]=6*C(target,2)_ for i in range(n): _ print(answer[i])_ the code of this match: pan=[] t=0 def jiecheng(x): ** t=1** ** for i in range(2,x+1):** ** t*=i** ** return t** def C(x,i): ** return int(jiecheng(x)/(jiecheng(x-i)*jiecheng(i)))** n=int(input()) for i in range(0,n): ** t+=(-1)**(n-i-1)*C(n,i)*pow(10,i)** pan.append(t) for i in range(len(pan)): ** print(pan[i])**__

We can easily see that in this competition, we coincidentally thought of this source code,  a coincidence has occurred due to the use of a common source published before the competition, and we all used this function to solve the problem, resulting in a high degree of similarity in the final code.