#include <bits/stdc++.h>
using namespace std ;
struct Max_queue
{
deque< pair<int , int> >q ;
public:
void insert(int val , int idx)
{
while(!q.empty() && val >= q.back().first)
q.pop_back() ;
q.emplace_back(val , idx) ;
}
void erase(int idx)
{
if(q.front().second == idx)
q.pop_front() ;
}
int Max()
{
return (q.front().first) ;
}
void clear()
{
q.clear() ;
}
};
const int MAX = 100 + 10 ;
const int ZERO = 1e6 ;
const int MAX2 = 2e6 + 10 ;
int arr[2*MAX] ;
int n ;
long long l ;
int dp[2][MAX2] ;
Max_queue q ;
multiset<int>s ;
int main()
{
ios_base::sync_with_stdio(0) ;
cin.tie(0) ;
cin>>n>>l ;
for(int i = -n ; i <= n ; ++i)
cin>>arr[i+n] ;
for(int i = 0 ; i <= 2e6 ; ++i)
dp[0][i] = -1e9 ;
dp[0][ZERO] = 0 ;
int now = 0 , prv = 1 ;
for(int i = -n ; i < 0 ; ++i)
{
now = !now , prv = !prv ;
for(int j = 0 ; j < i*-1 ; ++j)
{
q.clear() ;
int cur = 0 ;
for(int k = 2e6-j ; k >= 0 ; k -= i*-1)
{
q.insert(dp[prv][k] - cur , k) ;
int a = k + (arr[i+n]+1) * (i*-1) ;
if(cur > arr[i+n])
q.erase(a) ;
dp[now][k] = cur + q.Max() ;
++cur ;
}
}
}
for(int i = 1 ; i <= n ; ++i)
{
now = !now , prv = !prv ;
for(int j = 0 ; j < i ; ++j)
{
q.clear() ;
int cur = 0 ;
for(int k = j ; k <= 2e6 ; k += i)
{
q.insert(dp[prv][k] - cur , k) ;
int a = k - (arr[i+n]+1) * i ;
if(cur > arr[i+n])
q.erase(a) ;
dp[now][k] = cur + q.Max() ;
++cur ;
}
}
}
if(abs(l) <= 1e6 && dp[now][ZERO+l] + arr[n] >= 0)
cout<<dp[now][ZERO+l] + arr[n]<<"\n" ;
else
cout<<"impossible\n" ;
return 0 ;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
47 ms |
15956 KB |
Output is correct |
2 |
Correct |
69 ms |
15956 KB |
Output is correct |
3 |
Correct |
28 ms |
15888 KB |
Output is correct |
4 |
Correct |
241 ms |
15956 KB |
Output is correct |
5 |
Correct |
2451 ms |
15964 KB |
Output is correct |
6 |
Correct |
2767 ms |
15956 KB |
Output is correct |
7 |
Correct |
2426 ms |
15956 KB |
Output is correct |
8 |
Correct |
2455 ms |
15956 KB |
Output is correct |
9 |
Correct |
2310 ms |
15956 KB |
Output is correct |
10 |
Correct |
2214 ms |
15964 KB |
Output is correct |
11 |
Correct |
2292 ms |
15960 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
47 ms |
15956 KB |
Output is correct |
2 |
Correct |
69 ms |
15956 KB |
Output is correct |
3 |
Correct |
28 ms |
15888 KB |
Output is correct |
4 |
Correct |
241 ms |
15956 KB |
Output is correct |
5 |
Correct |
2451 ms |
15964 KB |
Output is correct |
6 |
Correct |
2767 ms |
15956 KB |
Output is correct |
7 |
Correct |
2426 ms |
15956 KB |
Output is correct |
8 |
Correct |
2455 ms |
15956 KB |
Output is correct |
9 |
Correct |
2310 ms |
15956 KB |
Output is correct |
10 |
Correct |
2214 ms |
15964 KB |
Output is correct |
11 |
Correct |
2292 ms |
15960 KB |
Output is correct |
12 |
Correct |
46 ms |
15868 KB |
Output is correct |
13 |
Correct |
74 ms |
15936 KB |
Output is correct |
14 |
Correct |
27 ms |
15948 KB |
Output is correct |
15 |
Correct |
238 ms |
15956 KB |
Output is correct |
16 |
Correct |
2409 ms |
15956 KB |
Output is correct |
17 |
Correct |
2405 ms |
15956 KB |
Output is correct |
18 |
Correct |
2427 ms |
15956 KB |
Output is correct |
19 |
Correct |
2396 ms |
15960 KB |
Output is correct |
20 |
Correct |
2374 ms |
15960 KB |
Output is correct |
21 |
Correct |
2404 ms |
15956 KB |
Output is correct |
22 |
Correct |
2501 ms |
15956 KB |
Output is correct |
23 |
Correct |
4512 ms |
15960 KB |
Output is correct |
24 |
Correct |
4202 ms |
15956 KB |
Output is correct |
25 |
Correct |
4380 ms |
15956 KB |
Output is correct |
26 |
Correct |
4153 ms |
15956 KB |
Output is correct |
27 |
Correct |
4340 ms |
15960 KB |
Output is correct |
28 |
Correct |
4217 ms |
15960 KB |
Output is correct |
29 |
Correct |
4160 ms |
15964 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
252 ms |
15956 KB |
Output is correct |
2 |
Incorrect |
1247 ms |
18672 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
252 ms |
15956 KB |
Output is correct |
2 |
Incorrect |
1247 ms |
18672 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
252 ms |
15956 KB |
Output is correct |
2 |
Incorrect |
1247 ms |
18672 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
47 ms |
15956 KB |
Output is correct |
2 |
Correct |
69 ms |
15956 KB |
Output is correct |
3 |
Correct |
28 ms |
15888 KB |
Output is correct |
4 |
Correct |
241 ms |
15956 KB |
Output is correct |
5 |
Correct |
2451 ms |
15964 KB |
Output is correct |
6 |
Correct |
2767 ms |
15956 KB |
Output is correct |
7 |
Correct |
2426 ms |
15956 KB |
Output is correct |
8 |
Correct |
2455 ms |
15956 KB |
Output is correct |
9 |
Correct |
2310 ms |
15956 KB |
Output is correct |
10 |
Correct |
2214 ms |
15964 KB |
Output is correct |
11 |
Correct |
2292 ms |
15960 KB |
Output is correct |
12 |
Correct |
252 ms |
15956 KB |
Output is correct |
13 |
Incorrect |
1247 ms |
18672 KB |
Output isn't correct |
14 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
252 ms |
15956 KB |
Output is correct |
2 |
Incorrect |
1247 ms |
18672 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
47 ms |
15956 KB |
Output is correct |
2 |
Correct |
69 ms |
15956 KB |
Output is correct |
3 |
Correct |
28 ms |
15888 KB |
Output is correct |
4 |
Correct |
241 ms |
15956 KB |
Output is correct |
5 |
Correct |
2451 ms |
15964 KB |
Output is correct |
6 |
Correct |
2767 ms |
15956 KB |
Output is correct |
7 |
Correct |
2426 ms |
15956 KB |
Output is correct |
8 |
Correct |
2455 ms |
15956 KB |
Output is correct |
9 |
Correct |
2310 ms |
15956 KB |
Output is correct |
10 |
Correct |
2214 ms |
15964 KB |
Output is correct |
11 |
Correct |
2292 ms |
15960 KB |
Output is correct |
12 |
Correct |
46 ms |
15868 KB |
Output is correct |
13 |
Correct |
74 ms |
15936 KB |
Output is correct |
14 |
Correct |
27 ms |
15948 KB |
Output is correct |
15 |
Correct |
238 ms |
15956 KB |
Output is correct |
16 |
Correct |
2409 ms |
15956 KB |
Output is correct |
17 |
Correct |
2405 ms |
15956 KB |
Output is correct |
18 |
Correct |
2427 ms |
15956 KB |
Output is correct |
19 |
Correct |
2396 ms |
15960 KB |
Output is correct |
20 |
Correct |
2374 ms |
15960 KB |
Output is correct |
21 |
Correct |
2404 ms |
15956 KB |
Output is correct |
22 |
Correct |
2501 ms |
15956 KB |
Output is correct |
23 |
Correct |
4512 ms |
15960 KB |
Output is correct |
24 |
Correct |
4202 ms |
15956 KB |
Output is correct |
25 |
Correct |
4380 ms |
15956 KB |
Output is correct |
26 |
Correct |
4153 ms |
15956 KB |
Output is correct |
27 |
Correct |
4340 ms |
15960 KB |
Output is correct |
28 |
Correct |
4217 ms |
15960 KB |
Output is correct |
29 |
Correct |
4160 ms |
15964 KB |
Output is correct |
30 |
Correct |
252 ms |
15956 KB |
Output is correct |
31 |
Incorrect |
1247 ms |
18672 KB |
Output isn't correct |
32 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
252 ms |
15956 KB |
Output is correct |
2 |
Incorrect |
1247 ms |
18672 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
47 ms |
15956 KB |
Output is correct |
2 |
Correct |
69 ms |
15956 KB |
Output is correct |
3 |
Correct |
28 ms |
15888 KB |
Output is correct |
4 |
Correct |
241 ms |
15956 KB |
Output is correct |
5 |
Correct |
2451 ms |
15964 KB |
Output is correct |
6 |
Correct |
2767 ms |
15956 KB |
Output is correct |
7 |
Correct |
2426 ms |
15956 KB |
Output is correct |
8 |
Correct |
2455 ms |
15956 KB |
Output is correct |
9 |
Correct |
2310 ms |
15956 KB |
Output is correct |
10 |
Correct |
2214 ms |
15964 KB |
Output is correct |
11 |
Correct |
2292 ms |
15960 KB |
Output is correct |
12 |
Correct |
46 ms |
15868 KB |
Output is correct |
13 |
Correct |
74 ms |
15936 KB |
Output is correct |
14 |
Correct |
27 ms |
15948 KB |
Output is correct |
15 |
Correct |
238 ms |
15956 KB |
Output is correct |
16 |
Correct |
2409 ms |
15956 KB |
Output is correct |
17 |
Correct |
2405 ms |
15956 KB |
Output is correct |
18 |
Correct |
2427 ms |
15956 KB |
Output is correct |
19 |
Correct |
2396 ms |
15960 KB |
Output is correct |
20 |
Correct |
2374 ms |
15960 KB |
Output is correct |
21 |
Correct |
2404 ms |
15956 KB |
Output is correct |
22 |
Correct |
2501 ms |
15956 KB |
Output is correct |
23 |
Correct |
4512 ms |
15960 KB |
Output is correct |
24 |
Correct |
4202 ms |
15956 KB |
Output is correct |
25 |
Correct |
4380 ms |
15956 KB |
Output is correct |
26 |
Correct |
4153 ms |
15956 KB |
Output is correct |
27 |
Correct |
4340 ms |
15960 KB |
Output is correct |
28 |
Correct |
4217 ms |
15960 KB |
Output is correct |
29 |
Correct |
4160 ms |
15964 KB |
Output is correct |
30 |
Correct |
252 ms |
15956 KB |
Output is correct |
31 |
Incorrect |
1247 ms |
18672 KB |
Output isn't correct |
32 |
Halted |
0 ms |
0 KB |
- |