結果
| 問題 |
No.1947 質より種類数
|
| コンテスト | |
| ユーザー |
gew1fw
|
| 提出日時 | 2025-06-12 16:10:20 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 1,785 bytes |
| コンパイル時間 | 192 ms |
| コンパイル使用メモリ | 82,480 KB |
| 実行使用メモリ | 93,964 KB |
| 最終ジャッジ日時 | 2025-06-12 16:10:31 |
| 合計ジャッジ時間 | 6,135 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| other | AC * 11 TLE * 1 -- * 25 |
ソースコード
def main():
import sys
input = sys.stdin.read().split()
idx = 0
N = int(input[idx]); idx += 1
V = int(input[idx]); idx += 1
C = int(input[idx]); idx += 1
items = []
for _ in range(N):
v = int(input[idx]); idx += 1
w = int(input[idx]); idx += 1
items.append((v, w))
# Initialize DP table
INF = -1
dp = [[INF] * (V + 1) for _ in range(N + 1)]
dp[0][0] = 0 # 0 types, 0 cost, 0 value
for i in range(N):
v_i, w_i = items[i]
# First, handle the case where we take at least one of the current item
# We need to iterate backwards to avoid overwriting the dp array prematurely
for k in range(N - 1, -1, -1):
for v in range(V, -1, -1):
if dp[k][v] == INF:
continue
new_v = v + v_i
if new_v > V:
continue
new_k = k + 1
if dp[new_k][new_v] < dp[k][v] + w_i:
dp[new_k][new_v] = dp[k][v] + w_i
# Then, apply the unbounded knapsack for additional items of the same type
# This does not increase the type count k
for k in range(N + 1):
for v in range(V + 1 - v_i):
if dp[k][v] == INF:
continue
if dp[k][v + v_i] < dp[k][v] + w_i:
dp[k][v + v_i] = dp[k][v] + w_i
max_satisfaction = 0
for k in range(N + 1):
max_val = max([val for val in dp[k] if val != INF], default=-1)
if max_val == -1:
continue
satisfaction = max_val + k * C
if satisfaction > max_satisfaction:
max_satisfaction = satisfaction
print(max_satisfaction)
if __name__ == '__main__':
main()
gew1fw