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2800번 -괄호 제거다국어

시간 제한메모리 제한제출정답맞힌 사람정답 비율
1 초128 MB85713386247737.627%

문제

어떤 수식이 주어졌을 때, 괄호를 제거해서 나올 수 있는 서로 다른 식의 개수를 계산하는 프로그램을 작성하시오.

이 수식은 괄호가 올바르게 쳐져 있다. 예를 들면, 1+2, (3+4), (3+4*(5+6))와 같은 식은 괄호가 서로 쌍이 맞으므로 올바른 식이다.

하지만, 1+(2*3, ((2+3)*4 와 같은 식은 쌍이 맞지 않는 괄호가 있으므로 올바른 식이 아니다.

괄호를 제거할 때는, 항상 쌍이 되는 괄호끼리 제거해야 한다.

예를들어 (2+(2*2)+2)에서 괄호를 제거하면, (2+2*2+2), 2+(2*2)+2, 2+2*2+2를 만들 수 있다. 하지만, (2+2*2)+2와 2+(2*2+2)는 만들 수 없다. 그 이유는 쌍이 되지 않는 괄호를 제거했기 때문이다.

어떤 식을 여러 쌍의 괄호가 감쌀 수 있다.

입력

첫째 줄에 음이 아닌 정수로 이루어진 수식이 주어진다. 이 수식은 괄호가 올바르게 쳐져있다. 숫자, '+', '*', '-', '/', '(', ')'로만 이루어져 있다. 수식의 길이는 최대 200이고, 괄호 쌍은 적어도 1개, 많아야 10개이다. 

출력

올바른 괄호 쌍을 제거해서 나올 수 있는 서로 다른 식을 사전 순으로 출력한다.

제한

예제 입력 1

(0/(0))

예제 출력 1

(0/0)0/(0)0/0

예제 입력 2

(2+(2*2)+2)

예제 출력 2

(2+2*2+2)2+(2*2)+22+2*2+2

예제 입력 3

(1+(2*(3+4)))

예제 출력 3

(1+(2*3+4))(1+2*(3+4))(1+2*3+4)1+(2*(3+4))1+(2*3+4)1+2*(3+4)1+2*3+4

힌트

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cGFpciBvZiBicmFja2V0cy48XC9wPlxyXG4iLCJvdXRwdXQiOiI8cD5PdXRwdXQgYWxsIGRpZmZlcmVudCBleHByZXNzaW9ucyB0aGF0IGNhbiBiZSBvYnRhaW5lZCBieSByZW1vdmluZyB2YWxpZCBwYWlycyBvZiBicmFja2V0cywgc29ydGVkIGxleGljb2dyYXBoaWNhbGx5LjxcL3A+XHJcbiIsImhpbnQiOiIiLCJvcmlnaW5hbCI6IjEiLCJodG1sX3RpdGxlIjoiMCIsInByb2JsZW1fbGFuZ190Y29kZSI6IkVuZ2xpc2gifV0=

출처

Contest > Croatian Open Competition in Informatics > COCI 2011/2012 > Contest #6 3번

출처

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