y <- c(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 3, 2, 2, 2, 
2, 2, 2, 2, 2, 2, 1, 5, 2, 5, 2, 7, 7, 3, 3, 2, 
9, 10, 4, 4, 4, 4, 4, 4, 4, 10, 4, 4, 4, 5, 11, 
12, 5, 5, 6, 5, 6, 6, 6, 6, 16, 15, 15, 9, 4)
n <- c(20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 
    18, 18, 17, 20, 20, 20, 20, 19, 19, 18, 18, 27, 
    25, 24, 23, 20, 20, 20, 20, 20, 20, 10, 49, 19, 
    46, 17, 49, 47, 20, 20, 13, 48, 50, 20, 20, 20, 
    20, 20, 20, 20, 48, 19, 19, 19, 22, 46, 49, 20, 
    20, 23, 19, 22, 20, 20, 20, 52, 46, 47, 24, 14
    )
N <- 71