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| 1 | +import java.io.BufferedReader; |
| 2 | +import java.io.IOException; |
| 3 | +import java.io.InputStreamReader; |
| 4 | +import java.util.ArrayDeque; |
| 5 | +import java.util.Deque; |
| 6 | + |
| 7 | +public class SB_2504 { |
| 8 | + public static void main(String[] args) throws IOException { |
| 9 | + BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); |
| 10 | + String line = br.readLine(); |
| 11 | + |
| 12 | + Deque<Character> stack = new ArrayDeque<>(); |
| 13 | + int ans = 0; |
| 14 | + int tmp = 1; |
| 15 | + |
| 16 | + for (int i = 0; i < line.length(); i++) { |
| 17 | + char cur = line.charAt(i); |
| 18 | + switch (cur) { |
| 19 | + case '(': |
| 20 | + stack.addFirst(cur); |
| 21 | + tmp*=2; |
| 22 | + break; |
| 23 | + case '[': |
| 24 | + stack.addFirst(cur); |
| 25 | + tmp*=3; |
| 26 | + break; |
| 27 | + case ')': |
| 28 | + if (stack.isEmpty() || stack.peekFirst() != '('){ |
| 29 | + System.out.println(0); |
| 30 | + return; |
| 31 | + } |
| 32 | + if (line.charAt(i - 1) == '(') ans+=tmp; |
| 33 | + tmp/=2; |
| 34 | + stack.pollFirst(); |
| 35 | + break; |
| 36 | + case ']': |
| 37 | + if (stack.isEmpty() || stack.peekFirst() != '['){ |
| 38 | + System.out.println(0); |
| 39 | + return; |
| 40 | + } |
| 41 | + if (line.charAt(i-1)=='[') ans+=tmp; |
| 42 | + tmp/=3; |
| 43 | + stack.pollFirst(); |
| 44 | + break; |
| 45 | + } |
| 46 | + } |
| 47 | + |
| 48 | + // 남아있는 괄호 여부 체크 |
| 49 | + if (stack.isEmpty()) System.out.println(ans); |
| 50 | + else System.out.println(0); |
| 51 | + } |
| 52 | +} |
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