Submission #931251

#	Time	Username	Problem	Language	Result	Execution time	Memory
931251		PlayVoltz	Three Friends (BOI14_friends)	Cpython 3	0 / 100	1006 ms	12600 KiB

friends

import sys

n = int(sys.stdin.readline())
s = sys.stdin.readline().strip()
ans = ""
count = 0


def is_permutation(s1, s2):
    return s1==s2

for i in range(1, n + 1):
    temp = s[:(i - 1)] + s[i:]
    if is_permutation(temp[:n//2], temp[n//2:]):
        count += 1
        ans = temp[:n//2]
    if count > 1:
        break

if count == 0:
    print("NOT POSSIBLE")
elif count == 1:
    print(ans)
else:
    print("NOT UNIQUE")

• Subtask 1: 0 / 35
• Subtask 2: 0 / 65