Can anyone please tell me what is wrong in this Python3 code for Kickstart Round C Problem 2 (Stable Wall)
Link: https://codingcompetitions.withgoogle.com/kickstart/round/000000000019ff43/00000000003379bb def dfs(visited, graph, node): if node not in visited: print(node, end = "") visited.add(node) for neighbour in graph[node]: dfs(visited, graph, neighbour) for case in range(1, int(input()) +1): visited = set() flag= 0 r,c = [int(x) for x in input().split()] mat = [] char = [] char = set() for i in range(r): li = list(input()) mat.append(li) for i in li: char.add(i) #print(char) #print(mat) pairs = [] pairs = set() for i in range(r-1): for j in range(c): if mat[i][j] != mat[i+1][j] and (mat[i][j], mat[i+1][j]) not in pairs: pairs.add((mat[i][j], mat[i+1][j])) if (mat[i+1][j], mat[i][j]) in pairs: print("Case #{}: -1".format(case)) flag = 1 break if flag == 1: break if flag == 0: #print(pairs) with_edge = [] adj = {} for i in char: adj[i] = [] for pair in pairs: adj[pair[1]].append(pair[0]) with_edge.append(pair[0]) #print(adj) for i in char: if i in char and i not in with_edge: start = i #print(start) print("Case #{}: ".format(case), end = "") dfs(visited, adj, start) print() -- You received this message because you are subscribed to the Google Groups "Google Code Jam" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-code+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/google-code/8b5998d7-3579-4869-ab96-bb1b860dce50%40googlegroups.com.