結果
| 問題 | No.2364 Knapsack Problem |
| コンテスト | |
| ユーザー |
siman
|
| 提出日時 | 2023-07-01 19:02:49 |
| 言語 | C++17(clang) (clang++ 22.1.2 + boost 1.89.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 1,414 bytes |
| 記録 | |
| コンパイル時間 | 5,220 ms |
| コンパイル使用メモリ | 145,920 KB |
| 実行使用メモリ | 7,720 KB |
| 最終ジャッジ日時 | 2026-03-29 22:05:23 |
| 合計ジャッジ時間 | 4,998 ms |
|
ジャッジサーバーID (参考情報) |
judge3_1 / judge1_0 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 10 WA * 10 |
コンパイルメッセージ
main.cpp:19:9: warning: variable length arrays in C++ are a Clang extension [-Wvla-cxx-extension]
19 | int A[N];
| ^
main.cpp:19:9: note: read of non-const variable 'N' is not allowed in a constant expression
main.cpp:17:7: note: declared here
17 | int N, M, W;
| ^
main.cpp:20:9: warning: variable length arrays in C++ are a Clang extension [-Wvla-cxx-extension]
20 | int B[N];
| ^
main.cpp:20:9: note: read of non-const variable 'N' is not allowed in a constant expression
main.cpp:17:7: note: declared here
17 | int N, M, W;
| ^
main.cpp:21:9: warning: variable length arrays in C++ are a Clang extension [-Wvla-cxx-extension]
21 | int C[M];
| ^
main.cpp:21:9: note: read of non-const variable 'M' is not allowed in a constant expression
main.cpp:17:10: note: declared here
17 | int N, M, W;
| ^
main.cpp:22:9: warning: variable length arrays in C++ are a Clang extension [-Wvla-cxx-extension]
22 | int D[M];
| ^
main.cpp:22:9: note: read of non-const variable 'M' is not allowed in a constant expression
main.cpp:17:10: note: declared here
17 | int N, M, W;
| ^
main.cpp:36:17: warning: variable length arrays in C++ are a Clang extension [-Wvla-cxx-extension]
36 | int dp[W + 1][1 << M];
| ^~~~~~
main.cpp:36:22: note: read of non-const variable 'M' is not allowed in a constant expression
36 | int dp[W + 1][1 << M];
| ^
main.cpp:17:10: note: declared here
17 | int N, M, W;
| ^
main.cpp:36:10: warning: variable length arrays in C++ are a Clang extension [-Wvla-cxx-extension]
36 | int dp[W + 1][1 << M];
| ^~~~~
main.cpp:36:10: note: read of non-const variable 'W' is not allowed in a constant expression
main.cpp:17:13: note: declared here
17 | int N, M, W;
| ^
6 warnings generated.
ソースコード
#include <cassert>
#include <cmath>
#include <algorithm>
#include <iostream>
#include <iomanip>
#include <climits>
#include <map>
#include <queue>
#include <set>
#include <cstring>
#include <vector>
using namespace std;
typedef long long ll;
int main() {
int N, M, W;
cin >> N >> M >> W;
int A[N];
int B[N];
int C[M];
int D[M];
for (int i = 0; i < N; ++i) {
cin >> A[i];
}
for (int i = 0; i < N; ++i) {
cin >> B[i];
}
for (int i = 0; i < M; ++i) {
cin >> C[i];
}
for (int i = 0; i < M; ++i) {
cin >> D[i];
}
int dp[W + 1][1 << M];
memset(dp, -1, sizeof(dp));
int ans = 0;
dp[0][0] = 0;
for (int i = 0; i < N; ++i) {
int a = A[i];
int b = B[i];
for (int w = W - a; w >= 0; --w) {
int nw = w + a;
for (int mask = 0; mask < (1 << M); ++mask) {
if (dp[w][mask] < 0) continue;
dp[nw][mask] = max(dp[nw][mask], dp[w][mask] + b);
ans = max(ans, dp[nw][mask]);
}
}
for (int w = W; w >= 0; --w) {
for (int mask = 0; mask < (1 << M); ++mask) {
if (dp[w][mask] < 0) continue;
for (int j = 0; j < M; ++j) {
if (mask >> j & 1) continue;
int nw = w - C[j];
int nmask = mask | (1 << j);
if (nw < 0) continue;
dp[nw][nmask] = max(dp[nw][nmask], dp[w][mask] - D[j]);
}
}
}
}
cout << ans << endl;
return 0;
}
siman