//Challenge: Accepted
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
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 12000005
#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[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)m);
ex[2 * m - i] = min(p,(ll)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[i] = -inf;
dp[-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) {
if (i - m > 0) {
for (int j = maxn - 1;j >= 0;j--) {
int val = j + p * (i-m);
if (val >= maxn) continue;
int del = i < m ? -p : p;
dp[val] = max(dp[val], dp[j] + del);
}
} else {
for (int j = 0;j < maxn;j++) {
int val = j + p * (i-m);
if (val < 0) continue;
int del = i < m ? -p : p;
dp[val] = max(dp[val], dp[j] + del);
}
}
}
}
if (L - mins >= maxn || L - mins < 0 || dp[L - mins] < -maxn) cout << "impossible\n";
else cout << dp[L - mins]+ans << "\n";
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
125 ms |
47188 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
125 ms |
47188 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
593 ms |
47268 KB |
Output is correct |
2 |
Correct |
1986 ms |
47260 KB |
Output is correct |
3 |
Correct |
598 ms |
47264 KB |
Output is correct |
4 |
Correct |
2237 ms |
47260 KB |
Output is correct |
5 |
Correct |
2077 ms |
47264 KB |
Output is correct |
6 |
Correct |
1809 ms |
47260 KB |
Output is correct |
7 |
Correct |
235 ms |
47268 KB |
Output is correct |
8 |
Correct |
280 ms |
47200 KB |
Output is correct |
9 |
Correct |
1033 ms |
47264 KB |
Output is correct |
10 |
Correct |
1363 ms |
47264 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
593 ms |
47268 KB |
Output is correct |
2 |
Correct |
1986 ms |
47260 KB |
Output is correct |
3 |
Correct |
598 ms |
47264 KB |
Output is correct |
4 |
Correct |
2237 ms |
47260 KB |
Output is correct |
5 |
Correct |
2077 ms |
47264 KB |
Output is correct |
6 |
Correct |
1809 ms |
47260 KB |
Output is correct |
7 |
Correct |
235 ms |
47268 KB |
Output is correct |
8 |
Correct |
280 ms |
47200 KB |
Output is correct |
9 |
Correct |
1033 ms |
47264 KB |
Output is correct |
10 |
Correct |
1363 ms |
47264 KB |
Output is correct |
11 |
Incorrect |
114 ms |
47264 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
593 ms |
47268 KB |
Output is correct |
2 |
Correct |
1986 ms |
47260 KB |
Output is correct |
3 |
Correct |
598 ms |
47264 KB |
Output is correct |
4 |
Correct |
2237 ms |
47260 KB |
Output is correct |
5 |
Correct |
2077 ms |
47264 KB |
Output is correct |
6 |
Correct |
1809 ms |
47260 KB |
Output is correct |
7 |
Correct |
235 ms |
47268 KB |
Output is correct |
8 |
Correct |
280 ms |
47200 KB |
Output is correct |
9 |
Correct |
1033 ms |
47264 KB |
Output is correct |
10 |
Correct |
1363 ms |
47264 KB |
Output is correct |
11 |
Correct |
420 ms |
47264 KB |
Output is correct |
12 |
Correct |
2035 ms |
47264 KB |
Output is correct |
13 |
Correct |
551 ms |
47276 KB |
Output is correct |
14 |
Correct |
2194 ms |
47264 KB |
Output is correct |
15 |
Correct |
2285 ms |
47268 KB |
Output is correct |
16 |
Correct |
2254 ms |
47272 KB |
Output is correct |
17 |
Correct |
247 ms |
47268 KB |
Output is correct |
18 |
Correct |
304 ms |
47260 KB |
Output is correct |
19 |
Correct |
1006 ms |
47260 KB |
Output is correct |
20 |
Correct |
1412 ms |
47260 KB |
Output is correct |
21 |
Correct |
247 ms |
47264 KB |
Output is correct |
22 |
Correct |
314 ms |
47260 KB |
Output is correct |
23 |
Correct |
3559 ms |
47260 KB |
Output is correct |
24 |
Correct |
1655 ms |
47260 KB |
Output is correct |
25 |
Correct |
3684 ms |
47264 KB |
Output is correct |
26 |
Correct |
4573 ms |
47268 KB |
Output is correct |
27 |
Correct |
3994 ms |
47268 KB |
Output is correct |
28 |
Correct |
2882 ms |
47264 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
125 ms |
47188 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
593 ms |
47268 KB |
Output is correct |
2 |
Correct |
1986 ms |
47260 KB |
Output is correct |
3 |
Correct |
598 ms |
47264 KB |
Output is correct |
4 |
Correct |
2237 ms |
47260 KB |
Output is correct |
5 |
Correct |
2077 ms |
47264 KB |
Output is correct |
6 |
Correct |
1809 ms |
47260 KB |
Output is correct |
7 |
Correct |
235 ms |
47268 KB |
Output is correct |
8 |
Correct |
280 ms |
47200 KB |
Output is correct |
9 |
Correct |
1033 ms |
47264 KB |
Output is correct |
10 |
Correct |
1363 ms |
47264 KB |
Output is correct |
11 |
Correct |
420 ms |
47264 KB |
Output is correct |
12 |
Correct |
2035 ms |
47264 KB |
Output is correct |
13 |
Correct |
551 ms |
47276 KB |
Output is correct |
14 |
Correct |
2194 ms |
47264 KB |
Output is correct |
15 |
Correct |
2285 ms |
47268 KB |
Output is correct |
16 |
Correct |
2254 ms |
47272 KB |
Output is correct |
17 |
Correct |
247 ms |
47268 KB |
Output is correct |
18 |
Correct |
304 ms |
47260 KB |
Output is correct |
19 |
Correct |
1006 ms |
47260 KB |
Output is correct |
20 |
Correct |
1412 ms |
47260 KB |
Output is correct |
21 |
Correct |
247 ms |
47264 KB |
Output is correct |
22 |
Correct |
314 ms |
47260 KB |
Output is correct |
23 |
Correct |
3559 ms |
47260 KB |
Output is correct |
24 |
Correct |
1655 ms |
47260 KB |
Output is correct |
25 |
Correct |
3684 ms |
47264 KB |
Output is correct |
26 |
Correct |
4573 ms |
47268 KB |
Output is correct |
27 |
Correct |
3994 ms |
47268 KB |
Output is correct |
28 |
Correct |
2882 ms |
47264 KB |
Output is correct |
29 |
Correct |
416 ms |
47260 KB |
Output is correct |
30 |
Correct |
2243 ms |
47260 KB |
Output is correct |
31 |
Correct |
585 ms |
47264 KB |
Output is correct |
32 |
Correct |
2043 ms |
47264 KB |
Output is correct |
33 |
Correct |
2345 ms |
47260 KB |
Output is correct |
34 |
Correct |
1902 ms |
47268 KB |
Output is correct |
35 |
Correct |
222 ms |
47264 KB |
Output is correct |
36 |
Correct |
294 ms |
47260 KB |
Output is correct |
37 |
Correct |
991 ms |
47264 KB |
Output is correct |
38 |
Correct |
1558 ms |
47188 KB |
Output is correct |
39 |
Correct |
236 ms |
47264 KB |
Output is correct |
40 |
Correct |
356 ms |
47260 KB |
Output is correct |
41 |
Correct |
3488 ms |
47268 KB |
Output is correct |
42 |
Correct |
1626 ms |
47260 KB |
Output is correct |
43 |
Correct |
3283 ms |
47272 KB |
Output is correct |
44 |
Correct |
4310 ms |
47268 KB |
Output is correct |
45 |
Correct |
3985 ms |
47268 KB |
Output is correct |
46 |
Correct |
2838 ms |
47264 KB |
Output is correct |
47 |
Correct |
269 ms |
47268 KB |
Output is correct |
48 |
Correct |
436 ms |
47276 KB |
Output is correct |
49 |
Execution timed out |
5070 ms |
47164 KB |
Time limit exceeded |
50 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
125 ms |
47188 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
593 ms |
47268 KB |
Output is correct |
2 |
Correct |
1986 ms |
47260 KB |
Output is correct |
3 |
Correct |
598 ms |
47264 KB |
Output is correct |
4 |
Correct |
2237 ms |
47260 KB |
Output is correct |
5 |
Correct |
2077 ms |
47264 KB |
Output is correct |
6 |
Correct |
1809 ms |
47260 KB |
Output is correct |
7 |
Correct |
235 ms |
47268 KB |
Output is correct |
8 |
Correct |
280 ms |
47200 KB |
Output is correct |
9 |
Correct |
1033 ms |
47264 KB |
Output is correct |
10 |
Correct |
1363 ms |
47264 KB |
Output is correct |
11 |
Correct |
420 ms |
47264 KB |
Output is correct |
12 |
Correct |
2035 ms |
47264 KB |
Output is correct |
13 |
Correct |
551 ms |
47276 KB |
Output is correct |
14 |
Correct |
2194 ms |
47264 KB |
Output is correct |
15 |
Correct |
2285 ms |
47268 KB |
Output is correct |
16 |
Correct |
2254 ms |
47272 KB |
Output is correct |
17 |
Correct |
247 ms |
47268 KB |
Output is correct |
18 |
Correct |
304 ms |
47260 KB |
Output is correct |
19 |
Correct |
1006 ms |
47260 KB |
Output is correct |
20 |
Correct |
1412 ms |
47260 KB |
Output is correct |
21 |
Correct |
247 ms |
47264 KB |
Output is correct |
22 |
Correct |
314 ms |
47260 KB |
Output is correct |
23 |
Correct |
3559 ms |
47260 KB |
Output is correct |
24 |
Correct |
1655 ms |
47260 KB |
Output is correct |
25 |
Correct |
3684 ms |
47264 KB |
Output is correct |
26 |
Correct |
4573 ms |
47268 KB |
Output is correct |
27 |
Correct |
3994 ms |
47268 KB |
Output is correct |
28 |
Correct |
2882 ms |
47264 KB |
Output is correct |
29 |
Correct |
416 ms |
47260 KB |
Output is correct |
30 |
Correct |
2243 ms |
47260 KB |
Output is correct |
31 |
Correct |
585 ms |
47264 KB |
Output is correct |
32 |
Correct |
2043 ms |
47264 KB |
Output is correct |
33 |
Correct |
2345 ms |
47260 KB |
Output is correct |
34 |
Correct |
1902 ms |
47268 KB |
Output is correct |
35 |
Correct |
222 ms |
47264 KB |
Output is correct |
36 |
Correct |
294 ms |
47260 KB |
Output is correct |
37 |
Correct |
991 ms |
47264 KB |
Output is correct |
38 |
Correct |
1558 ms |
47188 KB |
Output is correct |
39 |
Correct |
236 ms |
47264 KB |
Output is correct |
40 |
Correct |
356 ms |
47260 KB |
Output is correct |
41 |
Correct |
3488 ms |
47268 KB |
Output is correct |
42 |
Correct |
1626 ms |
47260 KB |
Output is correct |
43 |
Correct |
3283 ms |
47272 KB |
Output is correct |
44 |
Correct |
4310 ms |
47268 KB |
Output is correct |
45 |
Correct |
3985 ms |
47268 KB |
Output is correct |
46 |
Correct |
2838 ms |
47264 KB |
Output is correct |
47 |
Correct |
269 ms |
47268 KB |
Output is correct |
48 |
Correct |
436 ms |
47276 KB |
Output is correct |
49 |
Execution timed out |
5070 ms |
47164 KB |
Time limit exceeded |
50 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
125 ms |
47188 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |