AtCoder ABC #017 [Ruby]

abc017-a.rb

res = 0
while line = gets
  e, s = line.chomp.split(" ").map(&:to_i)
  res += e * s
end
puts res / 10

abc017-b.rb

str = gets.chomp
res = str.gsub(/ch/, "").gsub(/o/, "").gsub(/k/, "").gsub(/u/, "")
if res == "" then
  puts "YES"
else
  puts "NO"
end

abc017-c-1.rb

# TLE, 100

n, m = gets.chomp.split(" ").map(&:to_i)

ll = []
rr = []
ss = []

n.times do
  l, r, s = gets.chomp.split(" ").map(&:to_i)
  ll << l
  rr << r
  ss << s
end

ret = 0

m.times do |i|
  score = 0
  g = i + 1
  n.times do |j|
    if g >= ll[j] && g <= rr[j] then
      next
    else
      score += ss[j]
    end
  end
  ret = [ret, score].max
end

puts ret

abc017-c-2.rb

# AC 101

n, m = gets.chomp.split(" ").map(&:to_i)

a = Array.new(m+2, 0)
sum = 0

n.times do
  l, r, s = gets.chomp.split(" ").map(&:to_i)
  a[l] += s
  a[r+1] -= s
  sum += s
end

(1..m).each do |i|
  a[i+1] += a[i]
end

puts sum - a[1..m].min