diff --git "a/live12/test121/\353\254\270\354\240\2341/\353\260\261\355\225\234\352\262\260.py" "b/live12/test121/\353\254\270\354\240\2341/\353\260\261\355\225\234\352\262\260.py"
new file mode 100644
index 00000000..0f939b53
--- /dev/null
+++ "b/live12/test121/\353\254\270\354\240\2341/\353\260\261\355\225\234\352\262\260.py"
@@ -0,0 +1,49 @@
+import sys
+
+def main():
+    input = sys.stdin.readline
+
+    N, M, K = map(int, input().split())
+
+    board = [input().strip() for _ in range(N)]
+
+    w = [[0] * M for _ in range(N)]
+    b = [[0] * M for _ in range(N)]
+
+    for i in range(N):
+        for j in range(M):
+            expectedColorIfWhite = 'W' if (i + j) % 2 == 0 else 'B'
+            expectedColorIfBlack = 'B' if (i + j) % 2 == 0 else 'W'
+
+            if board[i][j] != expectedColorIfWhite:
+                w[i][j] = 1
+            if board[i][j] != expectedColorIfBlack:
+                b[i][j] = 1
+
+    def prefixSum(array):
+        ps = [[0] * (M+1) for _ in range(N+1)]
+
+        for i in range(N):
+            for j in range(M):
+                ps[i+1][j+1] = array[i][j] + ps[i][j+1] + ps[i+1][j] - ps[i][j]
+
+        return ps
+
+    prefixSumWhite = prefixSum(w)
+    print(prefixSumWhite)
+    prefixSumBlack = prefixSum(b)
+    print(prefixSumBlack)
+
+    minRepaintCount = float('inf')
+    for i in range(N - K + 1):
+        for j in range(M - K + 1):
+            x1, y1 = i, j
+            x2, y2 = i + K, j + K
+            whiteCount = prefixSumWhite[x2][y2] - prefixSumWhite[x1][y2] - prefixSumWhite[x2][y1] + prefixSumWhite[x1][y1]
+            blackCount = prefixSumBlack[x2][y2] - prefixSumBlack[x1][y2] - prefixSumBlack[x2][y1] + prefixSumBlack[x1][y1]
+            minRepaintCount = min(minRepaintCount, whiteCount, blackCount)
+
+    print(minRepaintCount)
+
+if __name__ == '__main__':
+    main()
\ No newline at end of file
diff --git "a/live12/test121/\353\254\270\354\240\2342/\353\260\261\355\225\234\352\262\260.py" "b/live12/test121/\353\254\270\354\240\2342/\353\260\261\355\225\234\352\262\260.py"
new file mode 100644
index 00000000..f6ec5f50
--- /dev/null
+++ "b/live12/test121/\353\254\270\354\240\2342/\353\260\261\355\225\234\352\262\260.py"
@@ -0,0 +1,13 @@
+import sys
+
+def main():
+    input = sys.stdin.readline
+
+    N = int(input())
+    heights = list(map(int, input().split()))
+
+    result = 0
+
+
+if __name__ == '__main__':
+    main()
\ No newline at end of file