From 13a341fba7c706485dca4ba2b5a2ae9c249b9f02 Mon Sep 17 00:00:00 2001
From: Sony <sonypark0204@gmail.com>
Date: Tue, 25 Jun 2019 22:29:40 +0900
Subject: [PATCH] =?UTF-8?q?[boj=201525]=20sony=20=EB=AC=B8=EC=A0=9C=20?=
 =?UTF-8?q?=ED=92=80=EC=9D=B4?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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---
 190621/sony/boj_1525.py | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 190621/sony/boj_1525.py

diff --git a/190621/sony/boj_1525.py b/190621/sony/boj_1525.py
new file mode 100644
index 0000000..f4f7cb0
--- /dev/null
+++ b/190621/sony/boj_1525.py
@@ -0,0 +1,41 @@
+import sys
+from collections import deque
+
+q = deque()
+dist = dict()
+
+a = [list(map(int, sys.stdin.readline().split())) for _ in range(3)]
+m = 0
+
+for i in range(3):
+    for j in range(3):
+        n = a[i][j]
+        if n == 0:
+            n = 9
+        m = m*10 + n
+
+def bfs():
+    q.append(m)
+    dist[m] = 0
+
+    while q:
+        d = q.popleft()
+        if d == 123456789:
+            return dist[d]
+        s = str(d)
+        k = s.find('9')
+        y,x = k//3, k%3
+
+        for dy, dx in (-1,0), (1,0), (0,-1), (0,1):
+            ny, nx = y+dy, x+dx
+            if nx < 0 or nx >= 3 or ny < 0 or ny >= 3: continue
+            nk = ny*3 + nx
+            ns = list(s)
+            ns[k], ns[nk] = ns[nk], ns[k]
+            nd = int(''.join(ns))
+            if dist.get(nd) is None:
+                dist[nd] = dist[d]+1
+                q.append(nd)
+    return -1
+
+print(bfs())
\ No newline at end of file