2109번 – 순회강연

문제

https://www.acmicpc.net/problem/2109

풀이

코드

n = int(input())
pds = []
maxD = 0
for _ in range(n):
  p, d = map(int ,input().split())
  pds.append((p, d))
  maxD = max(maxD, d)
  
def answer():
  global pds, maxD
  pds = sorted(pds, reverse=True)
  memo = [0]*(maxD+1)
  count, fullCount = (0, len(memo))
  for i in range(len(pds)):
    p, d = pds[i]
    if memo[d] == 0:
      memo[d] = p
      count += 1
    else:
      for underD in range(d-1, 0, -1):
        if memo[underD] == 0:
          memo[underD] = p
          count += 1
          break
    if count >= fullCount: break
  return sum(memo)

print(answer())