a = [1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23] b = [ [0] * 4 for x in range(3)] #存了 3*4 = 12 个元素 for i in range(len(a)): # 也i相关 x = i//4 y = i%4 b[x][y] = a[i] x,y = input().split() x,y = int(x),int(y) print( b[x][y] )