| ps | |
|---|---|
| 링크 | acmicpc.net/… |
| 출처 | BOJ |
| 문제 번호 | 31265 |
| 문제명 | 훈련 |
| 레벨 | 골드 2 |
| 분류 |
냅색 |
| 시간복잡도 | O(m*∑d/w) |
| 인풋사이즈 | m<=10000, ∑d<=1000 |
| 사용한 언어 | Python 3.11 |
| 제출기록 | 31120KB / 56ms |
| 최고기록 | 56ms |
| 해결날짜 | 2024/01/22 |
"""Solution code for "BOJ 31265. 훈련".
- Problem link: https://www.acmicpc.net/problem/31265
- Solution link: http://www.teferi.net/ps/problems/boj/31265
Tags: [knapsack]
"""
import sys
def main():
N, M = [int(x) for x in sys.stdin.readline().split()]
# pylint: disable=unused-variable
d = [int(x) for x in sys.stdin.readline().split()]
t = [[int(x) for x in sys.stdin.readline().split()] for _ in range(N)]
dp = [-2] * (M + 1)
dp[0] = -1
for i, t_i in enumerate(t):
for t_ij in t_i:
for v in range(M, -1, -1):
if v >= t_ij and dp[v - t_ij] >= i - 1:
dp[v] = i
print(next((v for v in range(M, -1, -1) if dp[v] == N - 1), -1))
if __name__ == '__main__':
main()
"""Solution code for "BOJ 31265. 훈련".
- Problem link: https://www.acmicpc.net/problem/31265
- Solution link: http://www.teferi.net/ps/problems/boj/31265
Tags: [knapsack]
"""
import sys
def main():
N, M = [int(x) for x in sys.stdin.readline().split()]
# pylint: disable=unused-variable
d = [int(x) for x in sys.stdin.readline().split()]
t = [[int(x) for x in sys.stdin.readline().split()] for _ in range(N)]
mask = (1 << (M + 1)) - 1
dp_cur = 0b1
for t_i in t:
dp_prev, dp_cur = dp_cur, 0b0
for t_ij in t_i:
dp_cur |= ((dp_cur << t_ij) | (dp_prev << t_ij)) & mask
print(dp_cur.bit_length() - 1 if dp_cur != 0 else '-1')
if __name__ == '__main__':
main()