/*input
2 5
2 3 1 1 4
*/
#include <bits/stdc++.h>
using namespace std;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
using ll = long long;
using ull = unsigned long long;
using ld = long double;
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int M;
ll L;
cin >> M >> L;
ll A[2 * M + 1];
for (int i = 0; i <= 2 * M; i++)
cin >> A[i];
int D = 505500;
vector<int> C(2 * D + 1, -1e9);
C[D] = 0;
int del = 0;
for (int i = 1; i <= M; i++)
{
for (int k = 1; k <= A[i + M]; k++)
{
for (int j = min(D + del, 2 * D - i); j >= max(0, D - del); j--)
{
C[j + i] = max(C[j + i], C[j] + 1);
}
del += i;
}
for (int k = 1; k <= A[-i + M]; k++)
{
for (int j = max(D - del, i); j <= min(D + del, 2 * D); j++)
{
C[j - i] = max(C[j - i], C[j] + 1);
}
if (k > A[i + M])
del += i;
}
}
if (L + D >= 0 && L + D <= 2 * D && C[L + D] >= 0)
cout << C[L + D] + A[M] << "\n";
else
cout << "impossible\n";
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4180 KB |
Output is correct |
2 |
Correct |
2 ms |
4180 KB |
Output is correct |
3 |
Correct |
2 ms |
4180 KB |
Output is correct |
4 |
Correct |
2 ms |
4180 KB |
Output is correct |
5 |
Correct |
60 ms |
4180 KB |
Output is correct |
6 |
Correct |
68 ms |
4180 KB |
Output is correct |
7 |
Correct |
17 ms |
4180 KB |
Output is correct |
8 |
Correct |
60 ms |
4180 KB |
Output is correct |
9 |
Correct |
163 ms |
4180 KB |
Output is correct |
10 |
Correct |
2 ms |
4180 KB |
Output is correct |
11 |
Correct |
2 ms |
4180 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4180 KB |
Output is correct |
2 |
Correct |
2 ms |
4180 KB |
Output is correct |
3 |
Correct |
2 ms |
4180 KB |
Output is correct |
4 |
Correct |
2 ms |
4180 KB |
Output is correct |
5 |
Correct |
60 ms |
4180 KB |
Output is correct |
6 |
Correct |
68 ms |
4180 KB |
Output is correct |
7 |
Correct |
17 ms |
4180 KB |
Output is correct |
8 |
Correct |
60 ms |
4180 KB |
Output is correct |
9 |
Correct |
163 ms |
4180 KB |
Output is correct |
10 |
Correct |
2 ms |
4180 KB |
Output is correct |
11 |
Correct |
2 ms |
4180 KB |
Output is correct |
12 |
Correct |
2 ms |
4180 KB |
Output is correct |
13 |
Correct |
2 ms |
4180 KB |
Output is correct |
14 |
Correct |
2 ms |
4180 KB |
Output is correct |
15 |
Correct |
2 ms |
4180 KB |
Output is correct |
16 |
Correct |
59 ms |
4180 KB |
Output is correct |
17 |
Correct |
69 ms |
4180 KB |
Output is correct |
18 |
Correct |
17 ms |
4180 KB |
Output is correct |
19 |
Correct |
60 ms |
4180 KB |
Output is correct |
20 |
Correct |
157 ms |
4180 KB |
Output is correct |
21 |
Correct |
2 ms |
4180 KB |
Output is correct |
22 |
Correct |
2 ms |
4180 KB |
Output is correct |
23 |
Correct |
1858 ms |
4180 KB |
Output is correct |
24 |
Correct |
1760 ms |
4180 KB |
Output is correct |
25 |
Correct |
370 ms |
4180 KB |
Output is correct |
26 |
Execution timed out |
5099 ms |
4180 KB |
Time limit exceeded |
27 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4180 KB |
Output is correct |
2 |
Execution timed out |
5059 ms |
4180 KB |
Time limit exceeded |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4180 KB |
Output is correct |
2 |
Execution timed out |
5059 ms |
4180 KB |
Time limit exceeded |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4180 KB |
Output is correct |
2 |
Execution timed out |
5059 ms |
4180 KB |
Time limit exceeded |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4180 KB |
Output is correct |
2 |
Correct |
2 ms |
4180 KB |
Output is correct |
3 |
Correct |
2 ms |
4180 KB |
Output is correct |
4 |
Correct |
2 ms |
4180 KB |
Output is correct |
5 |
Correct |
60 ms |
4180 KB |
Output is correct |
6 |
Correct |
68 ms |
4180 KB |
Output is correct |
7 |
Correct |
17 ms |
4180 KB |
Output is correct |
8 |
Correct |
60 ms |
4180 KB |
Output is correct |
9 |
Correct |
163 ms |
4180 KB |
Output is correct |
10 |
Correct |
2 ms |
4180 KB |
Output is correct |
11 |
Correct |
2 ms |
4180 KB |
Output is correct |
12 |
Correct |
2 ms |
4180 KB |
Output is correct |
13 |
Execution timed out |
5059 ms |
4180 KB |
Time limit exceeded |
14 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4180 KB |
Output is correct |
2 |
Execution timed out |
5059 ms |
4180 KB |
Time limit exceeded |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4180 KB |
Output is correct |
2 |
Correct |
2 ms |
4180 KB |
Output is correct |
3 |
Correct |
2 ms |
4180 KB |
Output is correct |
4 |
Correct |
2 ms |
4180 KB |
Output is correct |
5 |
Correct |
60 ms |
4180 KB |
Output is correct |
6 |
Correct |
68 ms |
4180 KB |
Output is correct |
7 |
Correct |
17 ms |
4180 KB |
Output is correct |
8 |
Correct |
60 ms |
4180 KB |
Output is correct |
9 |
Correct |
163 ms |
4180 KB |
Output is correct |
10 |
Correct |
2 ms |
4180 KB |
Output is correct |
11 |
Correct |
2 ms |
4180 KB |
Output is correct |
12 |
Correct |
2 ms |
4180 KB |
Output is correct |
13 |
Correct |
2 ms |
4180 KB |
Output is correct |
14 |
Correct |
2 ms |
4180 KB |
Output is correct |
15 |
Correct |
2 ms |
4180 KB |
Output is correct |
16 |
Correct |
59 ms |
4180 KB |
Output is correct |
17 |
Correct |
69 ms |
4180 KB |
Output is correct |
18 |
Correct |
17 ms |
4180 KB |
Output is correct |
19 |
Correct |
60 ms |
4180 KB |
Output is correct |
20 |
Correct |
157 ms |
4180 KB |
Output is correct |
21 |
Correct |
2 ms |
4180 KB |
Output is correct |
22 |
Correct |
2 ms |
4180 KB |
Output is correct |
23 |
Correct |
1858 ms |
4180 KB |
Output is correct |
24 |
Correct |
1760 ms |
4180 KB |
Output is correct |
25 |
Correct |
370 ms |
4180 KB |
Output is correct |
26 |
Execution timed out |
5099 ms |
4180 KB |
Time limit exceeded |
27 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4180 KB |
Output is correct |
2 |
Execution timed out |
5059 ms |
4180 KB |
Time limit exceeded |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4180 KB |
Output is correct |
2 |
Correct |
2 ms |
4180 KB |
Output is correct |
3 |
Correct |
2 ms |
4180 KB |
Output is correct |
4 |
Correct |
2 ms |
4180 KB |
Output is correct |
5 |
Correct |
60 ms |
4180 KB |
Output is correct |
6 |
Correct |
68 ms |
4180 KB |
Output is correct |
7 |
Correct |
17 ms |
4180 KB |
Output is correct |
8 |
Correct |
60 ms |
4180 KB |
Output is correct |
9 |
Correct |
163 ms |
4180 KB |
Output is correct |
10 |
Correct |
2 ms |
4180 KB |
Output is correct |
11 |
Correct |
2 ms |
4180 KB |
Output is correct |
12 |
Correct |
2 ms |
4180 KB |
Output is correct |
13 |
Correct |
2 ms |
4180 KB |
Output is correct |
14 |
Correct |
2 ms |
4180 KB |
Output is correct |
15 |
Correct |
2 ms |
4180 KB |
Output is correct |
16 |
Correct |
59 ms |
4180 KB |
Output is correct |
17 |
Correct |
69 ms |
4180 KB |
Output is correct |
18 |
Correct |
17 ms |
4180 KB |
Output is correct |
19 |
Correct |
60 ms |
4180 KB |
Output is correct |
20 |
Correct |
157 ms |
4180 KB |
Output is correct |
21 |
Correct |
2 ms |
4180 KB |
Output is correct |
22 |
Correct |
2 ms |
4180 KB |
Output is correct |
23 |
Correct |
1858 ms |
4180 KB |
Output is correct |
24 |
Correct |
1760 ms |
4180 KB |
Output is correct |
25 |
Correct |
370 ms |
4180 KB |
Output is correct |
26 |
Execution timed out |
5099 ms |
4180 KB |
Time limit exceeded |
27 |
Halted |
0 ms |
0 KB |
- |