Submission #19556187

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Source Code Expand

import math
def conbination(n, r):
    return math.factorial(n) // (math.factorial(n - r)*math.factorial(r))

n = int(input())  # nは入力回数
num_list=[0]*n
ascii_num_seki=1
for i in range(n):
    s = input()
    for k in range(10):
        ascii_num_seki*=(ord(s[k])-96)
    num_list[i]=ascii_num_seki
    ascii_num_seki=1

check_key={}
for i in range(n):
    if num_list[i] not in check_key:
        check_key[num_list[i]]=1
    else:
        check_key[num_list[i]]+=1

count=0
for v in check_key.values():
    if v>1:
        count+=conbination(v,2)
print(count)

Submission Info

Judge Result