/*input
2 5
2 3 1 1 4
*/
#pragma GCC optimize ("O3")
#pragma GCC target("avx,avx2,fma")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
template <typename T>
using oset = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
using ll = long long;
using ull = unsigned long long;
using ld = long double;
mt19937_64 rng(0);
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];
ll* A = A_ + M;
for (int i = -M; i <= M; i++)
cin >> A[i];
ll pl = 0;
pl += A[0];
A[0] = 0;
L = -L;
ll cnt = 0;
for (int l = -M; l <= M; l++)
{
L += l * A[l];
cnt += A[l];
}
map<ll, ll>D;
D[0] = 0;
ll del = M;
for (int v = M; v >= 1; v--)
for (int l : {v, -v})
{
if (l == 0)
continue;
map<ll, ll>D_;
for (pair<ll, ll>v : D)
{
ll k = (L - v.first) / l;
k = max(k, 0ll);
k = min(k, A[l]);
ll lo = max(0ll, k - del);
ll hi = min(k + del, A[l]);
if (v.first + k * l == L)
{
ll c_ = v.second + k;
auto it = D_.find(L);
if (it == D_.end())
D_[L] = c_;
else
it->second = min(it->second, c_);
}
else
for (ll c = lo; c <= hi; c++)
{
ll v_ = v.first + l * c;
ll c_ = v.second + c;
auto it = D_.find(v_);
if (it == D_.end())
D_[v_] = c_;
else
it->second = min(it->second, c_);
}
}
D = D_;
}
if (D.count(L))
cout << pl + cnt - D[L] << "\n";
else
cout << "impossible\n";
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Execution timed out |
5069 ms |
8140 KB |
Time limit exceeded |
6 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Execution timed out |
5069 ms |
8140 KB |
Time limit exceeded |
6 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
149 ms |
1180 KB |
Output is correct |
3 |
Correct |
26 ms |
672 KB |
Output is correct |
4 |
Correct |
107 ms |
1072 KB |
Output is correct |
5 |
Correct |
276 ms |
1572 KB |
Output is correct |
6 |
Correct |
113 ms |
1124 KB |
Output is correct |
7 |
Correct |
9 ms |
468 KB |
Output is correct |
8 |
Correct |
9 ms |
468 KB |
Output is correct |
9 |
Correct |
21 ms |
624 KB |
Output is correct |
10 |
Correct |
58 ms |
892 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
149 ms |
1180 KB |
Output is correct |
3 |
Correct |
26 ms |
672 KB |
Output is correct |
4 |
Correct |
107 ms |
1072 KB |
Output is correct |
5 |
Correct |
276 ms |
1572 KB |
Output is correct |
6 |
Correct |
113 ms |
1124 KB |
Output is correct |
7 |
Correct |
9 ms |
468 KB |
Output is correct |
8 |
Correct |
9 ms |
468 KB |
Output is correct |
9 |
Correct |
21 ms |
624 KB |
Output is correct |
10 |
Correct |
58 ms |
892 KB |
Output is correct |
11 |
Correct |
0 ms |
212 KB |
Output is correct |
12 |
Correct |
0 ms |
212 KB |
Output is correct |
13 |
Correct |
0 ms |
212 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
150 ms |
1212 KB |
Output is correct |
16 |
Correct |
27 ms |
628 KB |
Output is correct |
17 |
Correct |
104 ms |
1196 KB |
Output is correct |
18 |
Correct |
296 ms |
1748 KB |
Output is correct |
19 |
Correct |
112 ms |
1136 KB |
Output is correct |
20 |
Correct |
9 ms |
480 KB |
Output is correct |
21 |
Correct |
9 ms |
468 KB |
Output is correct |
22 |
Correct |
20 ms |
584 KB |
Output is correct |
23 |
Correct |
57 ms |
748 KB |
Output is correct |
24 |
Correct |
146 ms |
908 KB |
Output is correct |
25 |
Correct |
151 ms |
1356 KB |
Output is correct |
26 |
Correct |
1076 ms |
3556 KB |
Output is correct |
27 |
Correct |
188 ms |
1224 KB |
Output is correct |
28 |
Correct |
742 ms |
2768 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
149 ms |
1180 KB |
Output is correct |
3 |
Correct |
26 ms |
672 KB |
Output is correct |
4 |
Correct |
107 ms |
1072 KB |
Output is correct |
5 |
Correct |
276 ms |
1572 KB |
Output is correct |
6 |
Correct |
113 ms |
1124 KB |
Output is correct |
7 |
Correct |
9 ms |
468 KB |
Output is correct |
8 |
Correct |
9 ms |
468 KB |
Output is correct |
9 |
Correct |
21 ms |
624 KB |
Output is correct |
10 |
Correct |
58 ms |
892 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
147 ms |
1232 KB |
Output is correct |
13 |
Correct |
25 ms |
692 KB |
Output is correct |
14 |
Correct |
108 ms |
1196 KB |
Output is correct |
15 |
Correct |
278 ms |
1648 KB |
Output is correct |
16 |
Correct |
111 ms |
1188 KB |
Output is correct |
17 |
Correct |
8 ms |
468 KB |
Output is correct |
18 |
Correct |
9 ms |
488 KB |
Output is correct |
19 |
Correct |
20 ms |
580 KB |
Output is correct |
20 |
Correct |
60 ms |
832 KB |
Output is correct |
21 |
Correct |
28 ms |
596 KB |
Output is correct |
22 |
Correct |
33 ms |
676 KB |
Output is correct |
23 |
Correct |
2728 ms |
5396 KB |
Output is correct |
24 |
Correct |
982 ms |
3644 KB |
Output is correct |
25 |
Correct |
2700 ms |
5240 KB |
Output is correct |
26 |
Correct |
3076 ms |
5872 KB |
Output is correct |
27 |
Correct |
3463 ms |
6240 KB |
Output is correct |
28 |
Correct |
1377 ms |
3500 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Execution timed out |
5069 ms |
8140 KB |
Time limit exceeded |
6 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
149 ms |
1180 KB |
Output is correct |
3 |
Correct |
26 ms |
672 KB |
Output is correct |
4 |
Correct |
107 ms |
1072 KB |
Output is correct |
5 |
Correct |
276 ms |
1572 KB |
Output is correct |
6 |
Correct |
113 ms |
1124 KB |
Output is correct |
7 |
Correct |
9 ms |
468 KB |
Output is correct |
8 |
Correct |
9 ms |
468 KB |
Output is correct |
9 |
Correct |
21 ms |
624 KB |
Output is correct |
10 |
Correct |
58 ms |
892 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
147 ms |
1232 KB |
Output is correct |
13 |
Correct |
25 ms |
692 KB |
Output is correct |
14 |
Correct |
108 ms |
1196 KB |
Output is correct |
15 |
Correct |
278 ms |
1648 KB |
Output is correct |
16 |
Correct |
111 ms |
1188 KB |
Output is correct |
17 |
Correct |
8 ms |
468 KB |
Output is correct |
18 |
Correct |
9 ms |
488 KB |
Output is correct |
19 |
Correct |
20 ms |
580 KB |
Output is correct |
20 |
Correct |
60 ms |
832 KB |
Output is correct |
21 |
Correct |
28 ms |
596 KB |
Output is correct |
22 |
Correct |
33 ms |
676 KB |
Output is correct |
23 |
Correct |
2728 ms |
5396 KB |
Output is correct |
24 |
Correct |
982 ms |
3644 KB |
Output is correct |
25 |
Correct |
2700 ms |
5240 KB |
Output is correct |
26 |
Correct |
3076 ms |
5872 KB |
Output is correct |
27 |
Correct |
3463 ms |
6240 KB |
Output is correct |
28 |
Correct |
1377 ms |
3500 KB |
Output is correct |
29 |
Correct |
1 ms |
340 KB |
Output is correct |
30 |
Correct |
151 ms |
1180 KB |
Output is correct |
31 |
Correct |
25 ms |
696 KB |
Output is correct |
32 |
Correct |
112 ms |
1256 KB |
Output is correct |
33 |
Correct |
278 ms |
1612 KB |
Output is correct |
34 |
Correct |
125 ms |
1136 KB |
Output is correct |
35 |
Correct |
9 ms |
468 KB |
Output is correct |
36 |
Correct |
9 ms |
488 KB |
Output is correct |
37 |
Correct |
20 ms |
584 KB |
Output is correct |
38 |
Correct |
59 ms |
836 KB |
Output is correct |
39 |
Correct |
28 ms |
596 KB |
Output is correct |
40 |
Correct |
34 ms |
596 KB |
Output is correct |
41 |
Correct |
2710 ms |
5192 KB |
Output is correct |
42 |
Correct |
990 ms |
3712 KB |
Output is correct |
43 |
Correct |
2722 ms |
5064 KB |
Output is correct |
44 |
Correct |
3014 ms |
5892 KB |
Output is correct |
45 |
Correct |
3454 ms |
6208 KB |
Output is correct |
46 |
Correct |
1345 ms |
3564 KB |
Output is correct |
47 |
Correct |
271 ms |
1492 KB |
Output is correct |
48 |
Correct |
316 ms |
1660 KB |
Output is correct |
49 |
Execution timed out |
5074 ms |
11512 KB |
Time limit exceeded |
50 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Execution timed out |
5069 ms |
8140 KB |
Time limit exceeded |
6 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
149 ms |
1180 KB |
Output is correct |
3 |
Correct |
26 ms |
672 KB |
Output is correct |
4 |
Correct |
107 ms |
1072 KB |
Output is correct |
5 |
Correct |
276 ms |
1572 KB |
Output is correct |
6 |
Correct |
113 ms |
1124 KB |
Output is correct |
7 |
Correct |
9 ms |
468 KB |
Output is correct |
8 |
Correct |
9 ms |
468 KB |
Output is correct |
9 |
Correct |
21 ms |
624 KB |
Output is correct |
10 |
Correct |
58 ms |
892 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
147 ms |
1232 KB |
Output is correct |
13 |
Correct |
25 ms |
692 KB |
Output is correct |
14 |
Correct |
108 ms |
1196 KB |
Output is correct |
15 |
Correct |
278 ms |
1648 KB |
Output is correct |
16 |
Correct |
111 ms |
1188 KB |
Output is correct |
17 |
Correct |
8 ms |
468 KB |
Output is correct |
18 |
Correct |
9 ms |
488 KB |
Output is correct |
19 |
Correct |
20 ms |
580 KB |
Output is correct |
20 |
Correct |
60 ms |
832 KB |
Output is correct |
21 |
Correct |
28 ms |
596 KB |
Output is correct |
22 |
Correct |
33 ms |
676 KB |
Output is correct |
23 |
Correct |
2728 ms |
5396 KB |
Output is correct |
24 |
Correct |
982 ms |
3644 KB |
Output is correct |
25 |
Correct |
2700 ms |
5240 KB |
Output is correct |
26 |
Correct |
3076 ms |
5872 KB |
Output is correct |
27 |
Correct |
3463 ms |
6240 KB |
Output is correct |
28 |
Correct |
1377 ms |
3500 KB |
Output is correct |
29 |
Correct |
1 ms |
340 KB |
Output is correct |
30 |
Correct |
151 ms |
1180 KB |
Output is correct |
31 |
Correct |
25 ms |
696 KB |
Output is correct |
32 |
Correct |
112 ms |
1256 KB |
Output is correct |
33 |
Correct |
278 ms |
1612 KB |
Output is correct |
34 |
Correct |
125 ms |
1136 KB |
Output is correct |
35 |
Correct |
9 ms |
468 KB |
Output is correct |
36 |
Correct |
9 ms |
488 KB |
Output is correct |
37 |
Correct |
20 ms |
584 KB |
Output is correct |
38 |
Correct |
59 ms |
836 KB |
Output is correct |
39 |
Correct |
28 ms |
596 KB |
Output is correct |
40 |
Correct |
34 ms |
596 KB |
Output is correct |
41 |
Correct |
2710 ms |
5192 KB |
Output is correct |
42 |
Correct |
990 ms |
3712 KB |
Output is correct |
43 |
Correct |
2722 ms |
5064 KB |
Output is correct |
44 |
Correct |
3014 ms |
5892 KB |
Output is correct |
45 |
Correct |
3454 ms |
6208 KB |
Output is correct |
46 |
Correct |
1345 ms |
3564 KB |
Output is correct |
47 |
Correct |
271 ms |
1492 KB |
Output is correct |
48 |
Correct |
316 ms |
1660 KB |
Output is correct |
49 |
Execution timed out |
5074 ms |
11512 KB |
Time limit exceeded |
50 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Execution timed out |
5069 ms |
8140 KB |
Time limit exceeded |
6 |
Halted |
0 ms |
0 KB |
- |