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/*
  [programmers / 양꼬치]

  n	k	result
  10	3	124,000
  64	6	768,000
*/

function solution(n, k) {
  let lambSkewers = 12000;
  let drink = 2000;

  let serviceDrink = parseInt(n / 10);
  lambSkewers *= n;
  k -= serviceDrink;
  drink *= k;

  const answer = lambSkewers + drink;

  return answer;
}