감자튀김 공장🍟

✔ 문제 ✔ 풀이 import sys input = sys.stdin.readline def col(x, n): for i in range(9): if n == graph[x][i]: return False return True def row(y, n): for i in range(9): if n == graph[i][y]: return False return True def rect(x, y, n): nx = x // 3 * 3 ny = y // 3 * 3 for i in range(3): for j in range(3): if n == graph[nx + i][ny + j]: return False return True def dfs(idx): if idx == len(blank): # 마지막 0까지..