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[AtCoder]ABC-145|B - Echo
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提出結果
def getInt():
return int(input())
def getString():
return input()
def main():
n = getInt()
s = getString()
f = False
if n % 2 == 0:
if s[0:n//2] == s[n//2:]:
f = True
print('Yes' if f else 'No')
if __name__ == "__main__":
main()
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