A = $<.map { |s| s.split.map &:to_i }
N = A.shift[0]
VALUE = A.pop[0]
V, W = A.transpose
dp = [0] + [-1e9.to_i] * 10**5
N.times do |i|
  1e5.to_i.downto(W[i]) do |j|
    dp[j] = [dp[j], V[i] + dp[j - W[i]]].max
  end
end
_ = 0
1e5.to_i.times do |i|
  _ = [_, dp[i]].max
  dp[i] = [dp[i], _].max
end
p [1, dp.index(VALUE)].max
p dp[-1] == VALUE ? :inf : [1, dp.rindex(VALUE)].max