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Submission #964599

# Submission time Handle Problem Language Result Execution time Memory
964599 2024-04-17T07:37:17 Z aeg Uplifting Excursion (BOI22_vault) C++17
5 / 100
 2505 ms 8284 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
int OFFSET, OFFSET_SUM;
int dp[2][250005];

signed main() {
	int n, l;
	cin >> n >> l;
	vector<int> v(2 * n + 1);
	for (auto& i : v) cin >> i;
	OFFSET = n, OFFSET_SUM = n * 50 * 50;
	if (l > OFFSET_SUM || l < -OFFSET_SUM) {
		cout << "impossible";
		return 0;
	}
	for (int i = 0; i <= 2 * OFFSET_SUM; ++i) dp[0][i] = dp[1][i] = -1e9;
	dp[1][OFFSET_SUM] = 0;
	for (int i = 0; i <= 2 * n; ++i) {
		int actual_value = i - OFFSET;
		for (int j = 0; j <= OFFSET_SUM * 2; ++j) {
			dp[i & 1][j] = max(dp[i & 1][j], dp[i & 1 ^ 1][j]);
			for (int k = 1; k <= v[i]; ++k) {
				int prev_sum = j - k * actual_value;
				if (prev_sum < 0 || prev_sum > OFFSET_SUM * 2) continue;
				dp[i & 1][j] = max(dp[i & 1][j], dp[i & 1 ^ 1][prev_sum] + k);
			}
		}
	}
	int ans = dp[0][OFFSET_SUM + l];
	if (ans <= 0) cout << "impossible";
	else cout << ans;
}

Compilation message

vault.cpp: In function 'int main()':
vault.cpp:23:42: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   23 |    dp[i & 1][j] = max(dp[i & 1][j], dp[i & 1 ^ 1][j]);
      |                                        ~~^~~
vault.cpp:27:43: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   27 |     dp[i & 1][j] = max(dp[i & 1][j], dp[i & 1 ^ 1][prev_sum] + k);
      |                                         ~~^~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 5 ms 2648 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1404 ms 4324 KB Output is correct
7 Correct 374 ms 4436 KB Output is correct
8 Correct 1071 ms 4324 KB Output is correct
9 Correct 2369 ms 4328 KB Output is correct
10 Correct 70 ms 4328 KB Output is correct
11 Correct 47 ms 4184 KB Output is correct

Subtask #2
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 5 ms 2648 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1404 ms 4324 KB Output is correct
7 Correct 374 ms 4436 KB Output is correct
8 Correct 1071 ms 4324 KB Output is correct
9 Correct 2369 ms 4328 KB Output is correct
10 Correct 70 ms 4328 KB Output is correct
11 Correct 47 ms 4184 KB Output is correct
12 Correct 1 ms 2392 KB Output is correct
13 Correct 1 ms 2492 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 5 ms 2652 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1355 ms 4324 KB Output is correct
18 Correct 372 ms 4328 KB Output is correct
19 Correct 1195 ms 4328 KB Output is correct
20 Correct 2505 ms 4324 KB Output is correct
21 Correct 54 ms 4328 KB Output is correct
22 Correct 52 ms 4584 KB Output is correct
23 Correct 1 ms 344 KB Output is correct
24 Runtime error 5 ms 8284 KB Execution killed with signal 11
25 Halted 0 ms 0 KB -

Subtask #3-1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 2648 KB Output is correct
2 Incorrect 1 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3-2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 2648 KB Output is correct
2 Incorrect 1 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4-1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 2648 KB Output is correct
2 Incorrect 1 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4-2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 5 ms 2648 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1404 ms 4324 KB Output is correct
7 Correct 374 ms 4436 KB Output is correct
8 Correct 1071 ms 4324 KB Output is correct
9 Correct 2369 ms 4328 KB Output is correct
10 Correct 70 ms 4328 KB Output is correct
11 Correct 47 ms 4184 KB Output is correct
12 Correct 5 ms 2648 KB Output is correct
13 Incorrect 1 ms 348 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #5-1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 2648 KB Output is correct
2 Incorrect 1 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5-2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 5 ms 2648 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1404 ms 4324 KB Output is correct
7 Correct 374 ms 4436 KB Output is correct
8 Correct 1071 ms 4324 KB Output is correct
9 Correct 2369 ms 4328 KB Output is correct
10 Correct 70 ms 4328 KB Output is correct
11 Correct 47 ms 4184 KB Output is correct
12 Correct 1 ms 2392 KB Output is correct
13 Correct 1 ms 2492 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 5 ms 2652 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1355 ms 4324 KB Output is correct
18 Correct 372 ms 4328 KB Output is correct
19 Correct 1195 ms 4328 KB Output is correct
20 Correct 2505 ms 4324 KB Output is correct
21 Correct 54 ms 4328 KB Output is correct
22 Correct 52 ms 4584 KB Output is correct
23 Correct 1 ms 344 KB Output is correct
24 Runtime error 5 ms 8284 KB Execution killed with signal 11
25 Halted 0 ms 0 KB -

Subtask #6-1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 2648 KB Output is correct
2 Incorrect 1 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6-2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 5 ms 2648 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1404 ms 4324 KB Output is correct
7 Correct 374 ms 4436 KB Output is correct
8 Correct 1071 ms 4324 KB Output is correct
9 Correct 2369 ms 4328 KB Output is correct
10 Correct 70 ms 4328 KB Output is correct
11 Correct 47 ms 4184 KB Output is correct
12 Correct 1 ms 2392 KB Output is correct
13 Correct 1 ms 2492 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 5 ms 2652 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1355 ms 4324 KB Output is correct
18 Correct 372 ms 4328 KB Output is correct
19 Correct 1195 ms 4328 KB Output is correct
20 Correct 2505 ms 4324 KB Output is correct
21 Correct 54 ms 4328 KB Output is correct
22 Correct 52 ms 4584 KB Output is correct
23 Correct 1 ms 344 KB Output is correct
24 Runtime error 5 ms 8284 KB Execution killed with signal 11
25 Halted 0 ms 0 KB -