[20260105] BOJ / G2 / 오타 / 한종욱

Ukj0ng/202601/05 BOJ G2 오타.md

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+```
+import java.io.*;
+
+public class Main {
+    private static final BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+    private static final BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
+    private static boolean flag;
+    private static int[] sum;
+    private static char[] input;
+
+    public static void main(String[] args) throws IOException {
+        init();
+        int answer = solve(flag);
+
+        bw.write(answer + "\n");
+        bw.flush();
+        bw.close();
+        br.close();
+    }
+
+    private static void init() throws IOException {
+        input = br.readLine().toCharArray();
+        sum = new int[input.length+1];
+        int a = 0;
+        int b = 0;
+
+        for (int i = 0; i < input.length; i++) {
+            if (input[i] == '(') a++;
+            else b++;
+        }
+
+        // true -> '('가 더 많은 경우
+        if (a > b) flag = true;
+        // false -> ')'가 더 많은 경우
+    }
+
+    private static int solve(boolean flag) {
+        int result = 0;
+
+        if (flag) {
+            for (int i = 1; i <= input.length; i++) {
+                if (input[input.length-i] == ')') sum[i] = sum[i-1]+1;
+                else sum[i] = sum[i-1]-1;
+                if (sum[i] == -1) {
+                    result = (i+1)/2;
+                    break;
+                }
+            }
+        } else {
+            for (int i = 1; i <= input.length; i++) {
+                if (input[i-1] == '(') sum[i] = sum[i-1]+1;
+                else sum[i] = sum[i-1]-1;
+                if (sum[i] == -1) {
+                    result = (i+1)/2;
+                    break;
+                }
+            }
+        }
+
+        return result;
+    }
+}
+```