def main(): # 读取输入 grid = [] for i in range(3): row = list(map(int, input().split())) grid.append(row) # 检查每行之和是否为15 for i in range(3): if sum(grid[i]) != 15: print(0) return # 检查每列之和是否为15 for j in range(3): if grid[0][j] + grid[1][j] + grid[2][j] != 15: print(0) return # 检查主对角线之和是否为15 if grid[0][0] + grid[1][1] + grid[2][2] != 15: print(0) return # 检查副对角线之和是否为15 if grid[0][2] + grid[1][1] + grid[2][0] != 15: print(0) return # 所有条件都满足 print(1) if __name__ == "__main__": main()