[20260301] BOJ / G5 / 주사위 쌓기 / 김민진

zinnnn37/202603/1 BOJ G5 주사위 쌓기.md

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+```java
+import java.io.*;
+import java.util.StringTokenizer;
+
+public class BJ_2116_주사위_쌓기 {
+
+    private static final int[] pairs = new int[] { 5, 3, 4, 1, 2, 0 };
+
+    private static final BufferedReader  br = new BufferedReader(new InputStreamReader(System.in));
+    private static final BufferedWriter  bw = new BufferedWriter(new OutputStreamWriter(System.out));
+    private static       StringTokenizer st;
+
+    private static int N, ans;
+    private static int[][] dices, diceIdx;
+
+    public static void main(String[] args) throws IOException {
+        init();
+        sol();
+    }
+
+    private static void init() throws IOException {
+        N = Integer.parseInt(br.readLine());
+
+        dices = new int[N][6];
+        diceIdx = new int[N][7];
+        for (int i = 0; i < N; i++) {
+            st = new StringTokenizer(br.readLine());
+            for (int j = 0; j < 6; j++) {
+                dices[i][j] = Integer.parseInt(st.nextToken());
+                diceIdx[i][dices[i][j]] = j;
+            }
+        }
+    }
+
+    private static void sol() throws IOException {
+        findDice(0);
+
+        bw.write(ans + "");
+        bw.flush();
+        bw.close();
+        br.close();
+    }
+
+    private static void findDice(int num) {
+        if (num == 6) {
+            return;
+        }
+
+        int sum = 0;
+        if (num == 0 || num == 5) {
+            sum += findMax(0, 0, 5);
+        } else if (num == 1 || num == 3) {
+            sum += findMax(0, 1, 3);
+        } else if (num == 2 || num == 4) {
+            sum += findMax(0, 2, 4);
+        }
+
+        int prev = num;
+        for (int i = 1; i < N; i++) {
+            int cur = diceIdx[i][dices[i - 1][prev]];
+            sum += findMax(i, cur, pairs[cur]);
+            prev = pairs[cur];
+        }
+
+        ans = Math.max(ans, sum);
+
+        findDice(num + 1);
+    }
+
+    private static int findMax(int idx, int up, int down) {
+        int max = Math.max(dices[idx][up], dices[idx][down]);
+        int min = Math.min(dices[idx][up], dices[idx][down]);
+
+        if (max != 6) return 6;
+        if (min != 5) {
+            return 5;
+        } else {
+            return 4;
+        }
+    }
+
+}
+```