//Challenge: Accepted
#include <bits/stdc++.h>
using namespace std;
#ifdef zisk
void debug(){cout << endl;}
template<class T, class ... U> void debug(T a, U ... b){cout << a << " ", debug(b...);}
template<class T> void pary(T l, T r) {
while (l != r) cout << *l << " ", l++;
cout << endl;
}
#else
#define debug(...) 0
#define pary(...) 0
#endif
#define ll long long
#define maxn 3000005
#define pii pair<int, int>
#define ff first
#define ss second
#define io ios_base::sync_with_stdio(0);cin.tie(0);
const int inf = 1<<30;
int dp[2][maxn];
int main() {
io
int m;
ll L;
cin >> m >> L;
vector<ll> a(2*m+1), ex(2*m+1);
ll mins = 0, ans = 0;
for (int i = 0;i < 2*m+1;i++) {
cin >> a[i];
if (i == m) ans += a[i], a[i] = 0;
}
for (int i = m+1;i < 2*m+1;i++) {
ll p = min(a[i], L / (i-m));
ans += p;
L -= p * (i-m);
a[i] -= p;
ex[i] = min(a[i], (ll)2*m);
ex[2 * m - i] = min(p,(ll)2 * m);
}
for (int i = 0;i < 2 * m+1;i++) {
if (i < m) mins += ex[i] * (i - m);
}
for (int i = 0;i < maxn;i++) dp[0][i] = dp[1][i] = -inf;
dp[0][-mins] = 0;
dp[1][-mins] = 0;
for (int i = 0;i < 2*m+1;i++) {
ll cnt = 1;
vector<int> num;
while (ex[i] >= cnt) {
num.push_back(cnt);
ex[i] -= cnt;
cnt <<= 1;
}
if (ex[i] > 0) num.push_back(ex[i]);
for (int p:num) {
for (int j = 0;j < maxn;j++) {
int val = j + p * (i-m);
int del = i < m ? -p : p;
if (val >= 0 && val < maxn) dp[1][val] = max(dp[1][val], dp[0][j] + del);
}
for (int j = 0;j < maxn;j++) dp[0][j] = dp[1][j];
}
}
if (L - mins >= maxn || L - mins < 0 || dp[0][L - mins] < -maxn) cout << "impossible\n";
else cout << dp[0][L - mins]+ans << "\n";
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
38 ms |
23712 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
38 ms |
23712 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
168 ms |
23784 KB |
Output is correct |
2 |
Correct |
785 ms |
23784 KB |
Output is correct |
3 |
Correct |
243 ms |
23788 KB |
Output is correct |
4 |
Correct |
805 ms |
23780 KB |
Output is correct |
5 |
Correct |
801 ms |
23892 KB |
Output is correct |
6 |
Correct |
674 ms |
23780 KB |
Output is correct |
7 |
Correct |
89 ms |
23764 KB |
Output is correct |
8 |
Correct |
102 ms |
23764 KB |
Output is correct |
9 |
Correct |
359 ms |
23744 KB |
Output is correct |
10 |
Correct |
511 ms |
23788 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
168 ms |
23784 KB |
Output is correct |
2 |
Correct |
785 ms |
23784 KB |
Output is correct |
3 |
Correct |
243 ms |
23788 KB |
Output is correct |
4 |
Correct |
805 ms |
23780 KB |
Output is correct |
5 |
Correct |
801 ms |
23892 KB |
Output is correct |
6 |
Correct |
674 ms |
23780 KB |
Output is correct |
7 |
Correct |
89 ms |
23764 KB |
Output is correct |
8 |
Correct |
102 ms |
23764 KB |
Output is correct |
9 |
Correct |
359 ms |
23744 KB |
Output is correct |
10 |
Correct |
511 ms |
23788 KB |
Output is correct |
11 |
Incorrect |
36 ms |
23764 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
168 ms |
23784 KB |
Output is correct |
2 |
Correct |
785 ms |
23784 KB |
Output is correct |
3 |
Correct |
243 ms |
23788 KB |
Output is correct |
4 |
Correct |
805 ms |
23780 KB |
Output is correct |
5 |
Correct |
801 ms |
23892 KB |
Output is correct |
6 |
Correct |
674 ms |
23780 KB |
Output is correct |
7 |
Correct |
89 ms |
23764 KB |
Output is correct |
8 |
Correct |
102 ms |
23764 KB |
Output is correct |
9 |
Correct |
359 ms |
23744 KB |
Output is correct |
10 |
Correct |
511 ms |
23788 KB |
Output is correct |
11 |
Correct |
145 ms |
23784 KB |
Output is correct |
12 |
Correct |
707 ms |
23784 KB |
Output is correct |
13 |
Correct |
213 ms |
23788 KB |
Output is correct |
14 |
Correct |
757 ms |
23784 KB |
Output is correct |
15 |
Correct |
784 ms |
23784 KB |
Output is correct |
16 |
Correct |
688 ms |
23780 KB |
Output is correct |
17 |
Correct |
93 ms |
23780 KB |
Output is correct |
18 |
Correct |
101 ms |
23784 KB |
Output is correct |
19 |
Correct |
357 ms |
23780 KB |
Output is correct |
20 |
Correct |
502 ms |
23784 KB |
Output is correct |
21 |
Correct |
82 ms |
23784 KB |
Output is correct |
22 |
Correct |
114 ms |
23780 KB |
Output is correct |
23 |
Correct |
1303 ms |
23788 KB |
Output is correct |
24 |
Correct |
598 ms |
23884 KB |
Output is correct |
25 |
Correct |
1282 ms |
23780 KB |
Output is correct |
26 |
Correct |
1527 ms |
23780 KB |
Output is correct |
27 |
Correct |
1371 ms |
23784 KB |
Output is correct |
28 |
Correct |
1068 ms |
23780 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
38 ms |
23712 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
168 ms |
23784 KB |
Output is correct |
2 |
Correct |
785 ms |
23784 KB |
Output is correct |
3 |
Correct |
243 ms |
23788 KB |
Output is correct |
4 |
Correct |
805 ms |
23780 KB |
Output is correct |
5 |
Correct |
801 ms |
23892 KB |
Output is correct |
6 |
Correct |
674 ms |
23780 KB |
Output is correct |
7 |
Correct |
89 ms |
23764 KB |
Output is correct |
8 |
Correct |
102 ms |
23764 KB |
Output is correct |
9 |
Correct |
359 ms |
23744 KB |
Output is correct |
10 |
Correct |
511 ms |
23788 KB |
Output is correct |
11 |
Correct |
145 ms |
23784 KB |
Output is correct |
12 |
Correct |
707 ms |
23784 KB |
Output is correct |
13 |
Correct |
213 ms |
23788 KB |
Output is correct |
14 |
Correct |
757 ms |
23784 KB |
Output is correct |
15 |
Correct |
784 ms |
23784 KB |
Output is correct |
16 |
Correct |
688 ms |
23780 KB |
Output is correct |
17 |
Correct |
93 ms |
23780 KB |
Output is correct |
18 |
Correct |
101 ms |
23784 KB |
Output is correct |
19 |
Correct |
357 ms |
23780 KB |
Output is correct |
20 |
Correct |
502 ms |
23784 KB |
Output is correct |
21 |
Correct |
82 ms |
23784 KB |
Output is correct |
22 |
Correct |
114 ms |
23780 KB |
Output is correct |
23 |
Correct |
1303 ms |
23788 KB |
Output is correct |
24 |
Correct |
598 ms |
23884 KB |
Output is correct |
25 |
Correct |
1282 ms |
23780 KB |
Output is correct |
26 |
Correct |
1527 ms |
23780 KB |
Output is correct |
27 |
Correct |
1371 ms |
23784 KB |
Output is correct |
28 |
Correct |
1068 ms |
23780 KB |
Output is correct |
29 |
Correct |
145 ms |
23784 KB |
Output is correct |
30 |
Correct |
708 ms |
23884 KB |
Output is correct |
31 |
Correct |
214 ms |
23796 KB |
Output is correct |
32 |
Correct |
762 ms |
23784 KB |
Output is correct |
33 |
Correct |
784 ms |
23784 KB |
Output is correct |
34 |
Correct |
659 ms |
23784 KB |
Output is correct |
35 |
Correct |
90 ms |
23764 KB |
Output is correct |
36 |
Correct |
102 ms |
23788 KB |
Output is correct |
37 |
Correct |
366 ms |
23780 KB |
Output is correct |
38 |
Correct |
509 ms |
23884 KB |
Output is correct |
39 |
Correct |
80 ms |
23764 KB |
Output is correct |
40 |
Correct |
111 ms |
23708 KB |
Output is correct |
41 |
Correct |
1309 ms |
23784 KB |
Output is correct |
42 |
Correct |
596 ms |
23784 KB |
Output is correct |
43 |
Correct |
1311 ms |
23784 KB |
Output is correct |
44 |
Correct |
1539 ms |
23788 KB |
Output is correct |
45 |
Correct |
1374 ms |
23780 KB |
Output is correct |
46 |
Correct |
1051 ms |
23784 KB |
Output is correct |
47 |
Correct |
93 ms |
23892 KB |
Output is correct |
48 |
Correct |
131 ms |
23800 KB |
Output is correct |
49 |
Correct |
2922 ms |
23788 KB |
Output is correct |
50 |
Correct |
1264 ms |
23784 KB |
Output is correct |
51 |
Correct |
3125 ms |
23788 KB |
Output is correct |
52 |
Correct |
3523 ms |
23788 KB |
Output is correct |
53 |
Correct |
2974 ms |
23784 KB |
Output is correct |
54 |
Correct |
2502 ms |
23800 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
38 ms |
23712 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
168 ms |
23784 KB |
Output is correct |
2 |
Correct |
785 ms |
23784 KB |
Output is correct |
3 |
Correct |
243 ms |
23788 KB |
Output is correct |
4 |
Correct |
805 ms |
23780 KB |
Output is correct |
5 |
Correct |
801 ms |
23892 KB |
Output is correct |
6 |
Correct |
674 ms |
23780 KB |
Output is correct |
7 |
Correct |
89 ms |
23764 KB |
Output is correct |
8 |
Correct |
102 ms |
23764 KB |
Output is correct |
9 |
Correct |
359 ms |
23744 KB |
Output is correct |
10 |
Correct |
511 ms |
23788 KB |
Output is correct |
11 |
Correct |
145 ms |
23784 KB |
Output is correct |
12 |
Correct |
707 ms |
23784 KB |
Output is correct |
13 |
Correct |
213 ms |
23788 KB |
Output is correct |
14 |
Correct |
757 ms |
23784 KB |
Output is correct |
15 |
Correct |
784 ms |
23784 KB |
Output is correct |
16 |
Correct |
688 ms |
23780 KB |
Output is correct |
17 |
Correct |
93 ms |
23780 KB |
Output is correct |
18 |
Correct |
101 ms |
23784 KB |
Output is correct |
19 |
Correct |
357 ms |
23780 KB |
Output is correct |
20 |
Correct |
502 ms |
23784 KB |
Output is correct |
21 |
Correct |
82 ms |
23784 KB |
Output is correct |
22 |
Correct |
114 ms |
23780 KB |
Output is correct |
23 |
Correct |
1303 ms |
23788 KB |
Output is correct |
24 |
Correct |
598 ms |
23884 KB |
Output is correct |
25 |
Correct |
1282 ms |
23780 KB |
Output is correct |
26 |
Correct |
1527 ms |
23780 KB |
Output is correct |
27 |
Correct |
1371 ms |
23784 KB |
Output is correct |
28 |
Correct |
1068 ms |
23780 KB |
Output is correct |
29 |
Correct |
145 ms |
23784 KB |
Output is correct |
30 |
Correct |
708 ms |
23884 KB |
Output is correct |
31 |
Correct |
214 ms |
23796 KB |
Output is correct |
32 |
Correct |
762 ms |
23784 KB |
Output is correct |
33 |
Correct |
784 ms |
23784 KB |
Output is correct |
34 |
Correct |
659 ms |
23784 KB |
Output is correct |
35 |
Correct |
90 ms |
23764 KB |
Output is correct |
36 |
Correct |
102 ms |
23788 KB |
Output is correct |
37 |
Correct |
366 ms |
23780 KB |
Output is correct |
38 |
Correct |
509 ms |
23884 KB |
Output is correct |
39 |
Correct |
80 ms |
23764 KB |
Output is correct |
40 |
Correct |
111 ms |
23708 KB |
Output is correct |
41 |
Correct |
1309 ms |
23784 KB |
Output is correct |
42 |
Correct |
596 ms |
23784 KB |
Output is correct |
43 |
Correct |
1311 ms |
23784 KB |
Output is correct |
44 |
Correct |
1539 ms |
23788 KB |
Output is correct |
45 |
Correct |
1374 ms |
23780 KB |
Output is correct |
46 |
Correct |
1051 ms |
23784 KB |
Output is correct |
47 |
Correct |
93 ms |
23892 KB |
Output is correct |
48 |
Correct |
131 ms |
23800 KB |
Output is correct |
49 |
Correct |
2922 ms |
23788 KB |
Output is correct |
50 |
Correct |
1264 ms |
23784 KB |
Output is correct |
51 |
Correct |
3125 ms |
23788 KB |
Output is correct |
52 |
Correct |
3523 ms |
23788 KB |
Output is correct |
53 |
Correct |
2974 ms |
23784 KB |
Output is correct |
54 |
Correct |
2502 ms |
23800 KB |
Output is correct |
55 |
Correct |
145 ms |
23780 KB |
Output is correct |
56 |
Correct |
731 ms |
23780 KB |
Output is correct |
57 |
Correct |
224 ms |
23788 KB |
Output is correct |
58 |
Correct |
767 ms |
23788 KB |
Output is correct |
59 |
Correct |
793 ms |
23804 KB |
Output is correct |
60 |
Correct |
691 ms |
23780 KB |
Output is correct |
61 |
Correct |
90 ms |
23712 KB |
Output is correct |
62 |
Correct |
104 ms |
23784 KB |
Output is correct |
63 |
Correct |
365 ms |
23780 KB |
Output is correct |
64 |
Correct |
531 ms |
23884 KB |
Output is correct |
65 |
Correct |
79 ms |
23764 KB |
Output is correct |
66 |
Correct |
110 ms |
23784 KB |
Output is correct |
67 |
Correct |
1345 ms |
23784 KB |
Output is correct |
68 |
Correct |
601 ms |
23788 KB |
Output is correct |
69 |
Correct |
1299 ms |
23788 KB |
Output is correct |
70 |
Correct |
1588 ms |
23784 KB |
Output is correct |
71 |
Correct |
1471 ms |
23792 KB |
Output is correct |
72 |
Correct |
1126 ms |
23780 KB |
Output is correct |
73 |
Correct |
96 ms |
23788 KB |
Output is correct |
74 |
Correct |
147 ms |
23708 KB |
Output is correct |
75 |
Correct |
3124 ms |
23784 KB |
Output is correct |
76 |
Correct |
1320 ms |
23784 KB |
Output is correct |
77 |
Correct |
3144 ms |
23788 KB |
Output is correct |
78 |
Correct |
3442 ms |
23788 KB |
Output is correct |
79 |
Correct |
2985 ms |
23784 KB |
Output is correct |
80 |
Correct |
2473 ms |
23796 KB |
Output is correct |
81 |
Runtime error |
40 ms |
48048 KB |
Execution killed with signal 11 |
82 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
38 ms |
23712 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |