ABC145 - Atcoder/Python精進のための解説メモ

a = int(input())
print(int(a ** 2))

n = int(input())
s = input()
if n % 2 == 1:
    print('No')
else:
    t = n // 2
    if s[:t] == s[t:]:
        print('Yes')
    else:
        print('No')

import math
import itertools
n = int(input())
xyxy = [list(map(int, input().split())) for _ in range(n)]
ans = 0
for xy1, xy2 in itertools.permutations(xyxy, 2):
    x1, y1 = xy1
    x2, y2 = xy2
    ans += math.sqrt((x1 - x2) ** 2 + (y1 - y2) ** 2)
print(ans / n)

まだ解いていません