create dev channel

zeta/py/completed/1025.py

@@ -0,0 +1,35 @@
+import sys
+
+input = sys.stdin.readline
+
+
+# 제곱수
+def check_square(x):
+    return (x ** (1 / 2)).is_integer()
+
+
+def solve(N: int, M: int, I: list[list[str]]) -> int:  # length
+    maxed = -1
+    # 전탐색
+    for n in range(N):
+        for m in range(M):
+            for dn in range(-N, N):
+                for dm in range(-M, M):
+                    if dn == 0 and dm == 0:
+                        continue
+                    s = ''
+                    start = [n, m]
+                    while 0 <= start[0] < N and 0 <= start[1] < M:
+                        s += I[start[0]][start[1]]
+                        if check_square(int(s)):
+                            maxed = max(maxed, int(s))
+                        start[0] += dn
+                        start[1] += dm
+
+    return maxed
+
+
+if __name__ == '__main__':
+    N, M = map(int, input().split())
+    I = [list(map(str, input().rstrip())) for i in range(N)]
+    print(solve(N, M, I))