#include <bits/stdc++.h>
using namespace std ;
const int MAX = 100 + 10 ;
const int ZERO = 1e6 ;
const int MAX2 = 2e6 + 10 ;
int arr[2*MAX] ;
int n , l ;
int dp[2][MAX2] ;
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)
{
s.clear() ;
int cur = 0 ;
for(int k = 2e6-j ; k >= 0 ; k -= i*-1)
{
s.insert(dp[prv][k] - cur) ;
int a = k + (arr[i+n]+1) * (i*-1) ;
if(cur > arr[i+n])
s.erase(s.find(dp[prv][a] - (cur-arr[i+n]-1))) ;
dp[now][k] = cur + (*s.rbegin()) ;
++cur ;
}
}
}
for(int i = 1 ; i <= n ; ++i)
{
now = !now , prv = !prv ;
for(int j = 0 ; j < i ; ++j)
{
s.clear() ;
int cur = 0 ;
for(int k = j ; k <= 2e6 ; k += i)
{
s.insert(dp[prv][k] - cur) ;
int a = k - (arr[i+n]+1) * i ;
if(cur > arr[i+n])
s.erase(s.find(dp[prv][a] - (cur-arr[i+n]-1))) ;
dp[now][k] = cur + (*s.rbegin()) ;
++cur ;
}
}
}
if(l <= 1e6 && dp[now][ZERO+l] + arr[n] >= 0)
cout<<dp[now][ZERO+l] + arr[n]<<"\n" ;
else
cout<<"impossible\n" ;
return 0 ;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
369 ms |
15956 KB |
Output is correct |
2 |
Correct |
494 ms |
15960 KB |
Output is correct |
3 |
Correct |
183 ms |
15996 KB |
Output is correct |
4 |
Correct |
1769 ms |
15956 KB |
Output is correct |
5 |
Execution timed out |
5023 ms |
15964 KB |
Time limit exceeded |
6 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
369 ms |
15956 KB |
Output is correct |
2 |
Correct |
494 ms |
15960 KB |
Output is correct |
3 |
Correct |
183 ms |
15996 KB |
Output is correct |
4 |
Correct |
1769 ms |
15956 KB |
Output is correct |
5 |
Execution timed out |
5023 ms |
15964 KB |
Time limit exceeded |
6 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1773 ms |
16076 KB |
Output is correct |
2 |
Incorrect |
4446 ms |
15956 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1773 ms |
16076 KB |
Output is correct |
2 |
Incorrect |
4446 ms |
15956 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1773 ms |
16076 KB |
Output is correct |
2 |
Incorrect |
4446 ms |
15956 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
369 ms |
15956 KB |
Output is correct |
2 |
Correct |
494 ms |
15960 KB |
Output is correct |
3 |
Correct |
183 ms |
15996 KB |
Output is correct |
4 |
Correct |
1769 ms |
15956 KB |
Output is correct |
5 |
Execution timed out |
5023 ms |
15964 KB |
Time limit exceeded |
6 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1773 ms |
16076 KB |
Output is correct |
2 |
Incorrect |
4446 ms |
15956 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
369 ms |
15956 KB |
Output is correct |
2 |
Correct |
494 ms |
15960 KB |
Output is correct |
3 |
Correct |
183 ms |
15996 KB |
Output is correct |
4 |
Correct |
1769 ms |
15956 KB |
Output is correct |
5 |
Execution timed out |
5023 ms |
15964 KB |
Time limit exceeded |
6 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1773 ms |
16076 KB |
Output is correct |
2 |
Incorrect |
4446 ms |
15956 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
369 ms |
15956 KB |
Output is correct |
2 |
Correct |
494 ms |
15960 KB |
Output is correct |
3 |
Correct |
183 ms |
15996 KB |
Output is correct |
4 |
Correct |
1769 ms |
15956 KB |
Output is correct |
5 |
Execution timed out |
5023 ms |
15964 KB |
Time limit exceeded |
6 |
Halted |
0 ms |
0 KB |
- |