lines = []
while line = gets
    lines << line.chomp.split(' ').map(&:to_i)
end

N = lines[0][0]
X = lines[0][1]

ans = 1
now = 0
for i in 1..N do
  now += lines[1][i-1]
  if now <= X then
    ans += 1
  end
end
  
puts ans