#include<bits/stdc++.h>
using namespace std;
long long int m,dp[300005];
long long int L;
int num[200005];
int val[200005];
int su = 0;
int main()
{
cin>>m>>L;
for(int i=1;i<=m*2+1;i++)
{
cin>>num[i];
val[i] = i-m-1;
su += num[i];
}
for(int i=0;i<=300000;i++)dp[i] = -1;
dp[100000] = 0; //遍移量為1000000
for (int i=m+1;i<=m*2+1;i++)
{
for(int j=1;j<=num[i];j++)
{
for(int k=200000;k>=1;k--)
{
if(k >= val[i])
{
if(dp[k-val[i]] == -1)continue;
if(dp[k] == -1)
{
dp[k] = dp[k-val[i]] + 1;
}
else dp[k] = max(dp[k-val[i]] + 1,dp[k]);
}
}
}
}
for (int i =1;i<=m;i++)
{
for(int j=1;j<=num[i];j++)
{
for(int k=1;k<=200000;k++)
{
if(k - val[i] <= 200000)
{
if(dp[k-val[i]] == -1)continue;
if(dp[k] == -1)dp[k] = dp[k-val[i]] + 1;
else dp[k] = max(dp[k-val[i]] + 1,dp[k]);
}
}
}
}
if(L >= 100000 || L <= 0-100000)
{
cout<<"impossible"<<endl;
return 0;
}
else
{
if(dp[L+100000] >= 0)cout<<dp[L+100000]<<endl;
else cout<<"impossible"<<endl;
}
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
3932 KB |
Output is correct |
2 |
Correct |
4 ms |
2764 KB |
Output is correct |
3 |
Correct |
2 ms |
2652 KB |
Output is correct |
4 |
Correct |
13 ms |
2652 KB |
Output is correct |
5 |
Correct |
438 ms |
2772 KB |
Output is correct |
6 |
Correct |
484 ms |
2768 KB |
Output is correct |
7 |
Correct |
184 ms |
2768 KB |
Output is correct |
8 |
Correct |
469 ms |
2772 KB |
Output is correct |
9 |
Correct |
909 ms |
2648 KB |
Output is correct |
10 |
Correct |
57 ms |
2652 KB |
Output is correct |
11 |
Correct |
18 ms |
2652 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
3932 KB |
Output is correct |
2 |
Correct |
4 ms |
2764 KB |
Output is correct |
3 |
Correct |
2 ms |
2652 KB |
Output is correct |
4 |
Correct |
13 ms |
2652 KB |
Output is correct |
5 |
Correct |
438 ms |
2772 KB |
Output is correct |
6 |
Correct |
484 ms |
2768 KB |
Output is correct |
7 |
Correct |
184 ms |
2768 KB |
Output is correct |
8 |
Correct |
469 ms |
2772 KB |
Output is correct |
9 |
Correct |
909 ms |
2648 KB |
Output is correct |
10 |
Correct |
57 ms |
2652 KB |
Output is correct |
11 |
Correct |
18 ms |
2652 KB |
Output is correct |
12 |
Correct |
4 ms |
2652 KB |
Output is correct |
13 |
Correct |
2 ms |
2652 KB |
Output is correct |
14 |
Correct |
3 ms |
2652 KB |
Output is correct |
15 |
Correct |
15 ms |
2652 KB |
Output is correct |
16 |
Correct |
465 ms |
2648 KB |
Output is correct |
17 |
Correct |
542 ms |
3932 KB |
Output is correct |
18 |
Correct |
208 ms |
2652 KB |
Output is correct |
19 |
Correct |
495 ms |
4152 KB |
Output is correct |
20 |
Correct |
979 ms |
2772 KB |
Output is correct |
21 |
Correct |
28 ms |
3932 KB |
Output is correct |
22 |
Correct |
21 ms |
2772 KB |
Output is correct |
23 |
Correct |
2114 ms |
2768 KB |
Output is correct |
24 |
Incorrect |
1991 ms |
4144 KB |
Output isn't correct |
25 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
14 ms |
2648 KB |
Output is correct |
2 |
Execution timed out |
5049 ms |
2652 KB |
Time limit exceeded |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
14 ms |
2648 KB |
Output is correct |
2 |
Execution timed out |
5049 ms |
2652 KB |
Time limit exceeded |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
14 ms |
2648 KB |
Output is correct |
2 |
Execution timed out |
5049 ms |
2652 KB |
Time limit exceeded |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
3932 KB |
Output is correct |
2 |
Correct |
4 ms |
2764 KB |
Output is correct |
3 |
Correct |
2 ms |
2652 KB |
Output is correct |
4 |
Correct |
13 ms |
2652 KB |
Output is correct |
5 |
Correct |
438 ms |
2772 KB |
Output is correct |
6 |
Correct |
484 ms |
2768 KB |
Output is correct |
7 |
Correct |
184 ms |
2768 KB |
Output is correct |
8 |
Correct |
469 ms |
2772 KB |
Output is correct |
9 |
Correct |
909 ms |
2648 KB |
Output is correct |
10 |
Correct |
57 ms |
2652 KB |
Output is correct |
11 |
Correct |
18 ms |
2652 KB |
Output is correct |
12 |
Correct |
14 ms |
2648 KB |
Output is correct |
13 |
Execution timed out |
5049 ms |
2652 KB |
Time limit exceeded |
14 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
14 ms |
2648 KB |
Output is correct |
2 |
Execution timed out |
5049 ms |
2652 KB |
Time limit exceeded |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
3932 KB |
Output is correct |
2 |
Correct |
4 ms |
2764 KB |
Output is correct |
3 |
Correct |
2 ms |
2652 KB |
Output is correct |
4 |
Correct |
13 ms |
2652 KB |
Output is correct |
5 |
Correct |
438 ms |
2772 KB |
Output is correct |
6 |
Correct |
484 ms |
2768 KB |
Output is correct |
7 |
Correct |
184 ms |
2768 KB |
Output is correct |
8 |
Correct |
469 ms |
2772 KB |
Output is correct |
9 |
Correct |
909 ms |
2648 KB |
Output is correct |
10 |
Correct |
57 ms |
2652 KB |
Output is correct |
11 |
Correct |
18 ms |
2652 KB |
Output is correct |
12 |
Correct |
4 ms |
2652 KB |
Output is correct |
13 |
Correct |
2 ms |
2652 KB |
Output is correct |
14 |
Correct |
3 ms |
2652 KB |
Output is correct |
15 |
Correct |
15 ms |
2652 KB |
Output is correct |
16 |
Correct |
465 ms |
2648 KB |
Output is correct |
17 |
Correct |
542 ms |
3932 KB |
Output is correct |
18 |
Correct |
208 ms |
2652 KB |
Output is correct |
19 |
Correct |
495 ms |
4152 KB |
Output is correct |
20 |
Correct |
979 ms |
2772 KB |
Output is correct |
21 |
Correct |
28 ms |
3932 KB |
Output is correct |
22 |
Correct |
21 ms |
2772 KB |
Output is correct |
23 |
Correct |
2114 ms |
2768 KB |
Output is correct |
24 |
Incorrect |
1991 ms |
4144 KB |
Output isn't correct |
25 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
14 ms |
2648 KB |
Output is correct |
2 |
Execution timed out |
5049 ms |
2652 KB |
Time limit exceeded |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
3932 KB |
Output is correct |
2 |
Correct |
4 ms |
2764 KB |
Output is correct |
3 |
Correct |
2 ms |
2652 KB |
Output is correct |
4 |
Correct |
13 ms |
2652 KB |
Output is correct |
5 |
Correct |
438 ms |
2772 KB |
Output is correct |
6 |
Correct |
484 ms |
2768 KB |
Output is correct |
7 |
Correct |
184 ms |
2768 KB |
Output is correct |
8 |
Correct |
469 ms |
2772 KB |
Output is correct |
9 |
Correct |
909 ms |
2648 KB |
Output is correct |
10 |
Correct |
57 ms |
2652 KB |
Output is correct |
11 |
Correct |
18 ms |
2652 KB |
Output is correct |
12 |
Correct |
4 ms |
2652 KB |
Output is correct |
13 |
Correct |
2 ms |
2652 KB |
Output is correct |
14 |
Correct |
3 ms |
2652 KB |
Output is correct |
15 |
Correct |
15 ms |
2652 KB |
Output is correct |
16 |
Correct |
465 ms |
2648 KB |
Output is correct |
17 |
Correct |
542 ms |
3932 KB |
Output is correct |
18 |
Correct |
208 ms |
2652 KB |
Output is correct |
19 |
Correct |
495 ms |
4152 KB |
Output is correct |
20 |
Correct |
979 ms |
2772 KB |
Output is correct |
21 |
Correct |
28 ms |
3932 KB |
Output is correct |
22 |
Correct |
21 ms |
2772 KB |
Output is correct |
23 |
Correct |
2114 ms |
2768 KB |
Output is correct |
24 |
Incorrect |
1991 ms |
4144 KB |
Output isn't correct |
25 |
Halted |
0 ms |
0 KB |
- |