Slide 21
Slide 21 text
枚
だけ DP で (PyPy3)
N = int(input())
A1, B1 = map(int,input().split())
A2, B2 = map(int,input().split())
A3, B3 = map(int,input().split())
if A2 * B1 < A1 * B2:
A1, B1, A2, B2 = A2, B2, A1, B1
if A3 * B1 < A1 * B3:
A1, B1, A3, B3 = A3, B3, A1, B1
c1min = max(N // A1 - A2 - A3, 0)
dplen = N - c1min * A1
r = 0
dp = [0] * (dplen + 1)
for i in range(dplen + 1):
dp[i] = r = max(
dp[i - A1] + B1 if i >= A1 else 0,
dp[i - A2] + B2 if i >= A2 else 0,
dp[i - A3] + B3 if i >= A3 else 0,
r,
)
print(r + c1min * B1)
を全探索 (Python3/PyPy3)
N = int(input())
A1, B1 = map(int,input().split())
A2, B2 = map(int,input().split())
A3, B3 = map(int,input().split())
if A2 * B1 < A1 * B2:
A1, B1, A2, B2 = A2, B2, A1, B1
if A3 * B1 < A1 * B3:
A1, B1, A3, B3 = A3, B3, A1, B1
print(
max(
t // A1 * B1 + p + q
for p, s in zip(range(0, A1 * B2, B2), range(N, -1, -A2))
for q, t in zip(range(0, A1 * B3, B3), range(s, -1, -A3))
)
)
コード例 F. Udon Coupon (Hard) (PyPy3)
yukicoder contest 398 解説 2023-07-21
VRC競プロ部 21