#include<bits/stdc++.h>
#define fi first
#define se second
using namespace std;
const int M=300;
const long long INF=1e18L+7;
const int Z=M+10;
const int ZD=M*M+10;
long long t[2*Z+10];
vector<tuple<int,long long,int>> items;
long long dp[2*ZD+10];
deque<pair<int,long long>> q;
void addq(int j,long long c)
{
while(!q.empty() && q.back().se<=c)
q.pop_back();
q.emplace_back(j,c);
return;
}
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
int m;
long long l;
cin>>m>>l;
for(int i=-m;i<=m;i++)
cin>>t[Z+i];
if(l<0)
{
l=-l;
for(int i=1;i<=m;i++)
swap(t[Z-i],t[Z+i]);
}
long long ans=0;
long long s=0;
for(int i=-m;i<=m;i++)
{
long long tmp;
if(i<=0)
tmp=t[Z+i];
else
tmp=min(t[Z+i],(l-s)/i);
if(tmp>0)
{
ans+=tmp;
s+=tmp*i;
items.emplace_back(-i,tmp,-1);
}
if(tmp<t[Z+i])
items.emplace_back(i,t[Z+i]-tmp,1);
}
if(s+m<l)
{
cout<<"impossible\n";
return 0;
}
for(int i=0;i<=2*ZD;i++)
dp[i]=-INF;
dp[ZD]=ans;
for(auto [v,cnt,c]:items)
{
if(v>0)
{
for(int r=0;r<v;r++)
{
q.clear();
for(int i=r,j=0;i<=2*ZD;i+=v,j++)
{
addq(j,dp[i]-j*c);
if(q.front().fi+cnt<j)
q.pop_front();
dp[i]=q.front().se+j*c;
}
}
}
else
{
for(int r=2*ZD;r>2*ZD+v;r--)
{
q.clear();
for(int i=r,j=0;i>=0;i+=v,j++)
{
addq(j,dp[i]-j*c);
if(q.front().fi+cnt<j)
q.pop_front();
dp[i]=q.front().se+j*c;
}
}
}
}
if(dp[ZD+l-s]<0)
cout<<"impossible\n";
else
cout<<dp[ZD+l-s]<<"\n";
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
14 ms |
1728 KB |
Output is correct |
2 |
Correct |
58 ms |
1852 KB |
Output is correct |
3 |
Correct |
18 ms |
1748 KB |
Output is correct |
4 |
Correct |
39 ms |
2024 KB |
Output is correct |
5 |
Correct |
59 ms |
1736 KB |
Output is correct |
6 |
Correct |
43 ms |
2220 KB |
Output is correct |
7 |
Correct |
7 ms |
1748 KB |
Output is correct |
8 |
Correct |
9 ms |
1784 KB |
Output is correct |
9 |
Correct |
26 ms |
1952 KB |
Output is correct |
10 |
Correct |
35 ms |
1752 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
14 ms |
1728 KB |
Output is correct |
2 |
Correct |
58 ms |
1852 KB |
Output is correct |
3 |
Correct |
18 ms |
1748 KB |
Output is correct |
4 |
Correct |
39 ms |
2024 KB |
Output is correct |
5 |
Correct |
59 ms |
1736 KB |
Output is correct |
6 |
Correct |
43 ms |
2220 KB |
Output is correct |
7 |
Correct |
7 ms |
1748 KB |
Output is correct |
8 |
Correct |
9 ms |
1784 KB |
Output is correct |
9 |
Correct |
26 ms |
1952 KB |
Output is correct |
10 |
Correct |
35 ms |
1752 KB |
Output is correct |
11 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
14 ms |
1728 KB |
Output is correct |
2 |
Correct |
58 ms |
1852 KB |
Output is correct |
3 |
Correct |
18 ms |
1748 KB |
Output is correct |
4 |
Correct |
39 ms |
2024 KB |
Output is correct |
5 |
Correct |
59 ms |
1736 KB |
Output is correct |
6 |
Correct |
43 ms |
2220 KB |
Output is correct |
7 |
Correct |
7 ms |
1748 KB |
Output is correct |
8 |
Correct |
9 ms |
1784 KB |
Output is correct |
9 |
Correct |
26 ms |
1952 KB |
Output is correct |
10 |
Correct |
35 ms |
1752 KB |
Output is correct |
11 |
Correct |
13 ms |
1724 KB |
Output is correct |
12 |
Correct |
42 ms |
1748 KB |
Output is correct |
13 |
Correct |
15 ms |
1748 KB |
Output is correct |
14 |
Correct |
39 ms |
2004 KB |
Output is correct |
15 |
Correct |
43 ms |
1828 KB |
Output is correct |
16 |
Correct |
42 ms |
2132 KB |
Output is correct |
17 |
Correct |
6 ms |
1748 KB |
Output is correct |
18 |
Correct |
10 ms |
1748 KB |
Output is correct |
19 |
Correct |
34 ms |
1868 KB |
Output is correct |
20 |
Correct |
31 ms |
1748 KB |
Output is correct |
21 |
Correct |
5 ms |
1620 KB |
Output is correct |
22 |
Correct |
11 ms |
1736 KB |
Output is correct |
23 |
Correct |
73 ms |
1804 KB |
Output is correct |
24 |
Correct |
40 ms |
1748 KB |
Output is correct |
25 |
Correct |
84 ms |
1876 KB |
Output is correct |
26 |
Correct |
75 ms |
1864 KB |
Output is correct |
27 |
Correct |
69 ms |
2084 KB |
Output is correct |
28 |
Correct |
50 ms |
1748 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
14 ms |
1728 KB |
Output is correct |
2 |
Correct |
58 ms |
1852 KB |
Output is correct |
3 |
Correct |
18 ms |
1748 KB |
Output is correct |
4 |
Correct |
39 ms |
2024 KB |
Output is correct |
5 |
Correct |
59 ms |
1736 KB |
Output is correct |
6 |
Correct |
43 ms |
2220 KB |
Output is correct |
7 |
Correct |
7 ms |
1748 KB |
Output is correct |
8 |
Correct |
9 ms |
1784 KB |
Output is correct |
9 |
Correct |
26 ms |
1952 KB |
Output is correct |
10 |
Correct |
35 ms |
1752 KB |
Output is correct |
11 |
Correct |
13 ms |
1724 KB |
Output is correct |
12 |
Correct |
42 ms |
1748 KB |
Output is correct |
13 |
Correct |
15 ms |
1748 KB |
Output is correct |
14 |
Correct |
39 ms |
2004 KB |
Output is correct |
15 |
Correct |
43 ms |
1828 KB |
Output is correct |
16 |
Correct |
42 ms |
2132 KB |
Output is correct |
17 |
Correct |
6 ms |
1748 KB |
Output is correct |
18 |
Correct |
10 ms |
1748 KB |
Output is correct |
19 |
Correct |
34 ms |
1868 KB |
Output is correct |
20 |
Correct |
31 ms |
1748 KB |
Output is correct |
21 |
Correct |
5 ms |
1620 KB |
Output is correct |
22 |
Correct |
11 ms |
1736 KB |
Output is correct |
23 |
Correct |
73 ms |
1804 KB |
Output is correct |
24 |
Correct |
40 ms |
1748 KB |
Output is correct |
25 |
Correct |
84 ms |
1876 KB |
Output is correct |
26 |
Correct |
75 ms |
1864 KB |
Output is correct |
27 |
Correct |
69 ms |
2084 KB |
Output is correct |
28 |
Correct |
50 ms |
1748 KB |
Output is correct |
29 |
Correct |
24 ms |
1620 KB |
Output is correct |
30 |
Correct |
57 ms |
1848 KB |
Output is correct |
31 |
Correct |
17 ms |
1736 KB |
Output is correct |
32 |
Correct |
48 ms |
2004 KB |
Output is correct |
33 |
Correct |
48 ms |
1828 KB |
Output is correct |
34 |
Correct |
38 ms |
2220 KB |
Output is correct |
35 |
Correct |
7 ms |
1840 KB |
Output is correct |
36 |
Correct |
12 ms |
1748 KB |
Output is correct |
37 |
Correct |
27 ms |
1876 KB |
Output is correct |
38 |
Correct |
37 ms |
1736 KB |
Output is correct |
39 |
Correct |
8 ms |
1620 KB |
Output is correct |
40 |
Correct |
10 ms |
1620 KB |
Output is correct |
41 |
Correct |
80 ms |
1800 KB |
Output is correct |
42 |
Correct |
36 ms |
1748 KB |
Output is correct |
43 |
Correct |
65 ms |
1976 KB |
Output is correct |
44 |
Correct |
68 ms |
1928 KB |
Output is correct |
45 |
Correct |
71 ms |
2100 KB |
Output is correct |
46 |
Correct |
71 ms |
1792 KB |
Output is correct |
47 |
Correct |
8 ms |
1620 KB |
Output is correct |
48 |
Correct |
13 ms |
1732 KB |
Output is correct |
49 |
Correct |
145 ms |
2096 KB |
Output is correct |
50 |
Correct |
70 ms |
1736 KB |
Output is correct |
51 |
Correct |
134 ms |
2216 KB |
Output is correct |
52 |
Correct |
139 ms |
2020 KB |
Output is correct |
53 |
Correct |
155 ms |
2100 KB |
Output is correct |
54 |
Correct |
168 ms |
1972 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
14 ms |
1728 KB |
Output is correct |
2 |
Correct |
58 ms |
1852 KB |
Output is correct |
3 |
Correct |
18 ms |
1748 KB |
Output is correct |
4 |
Correct |
39 ms |
2024 KB |
Output is correct |
5 |
Correct |
59 ms |
1736 KB |
Output is correct |
6 |
Correct |
43 ms |
2220 KB |
Output is correct |
7 |
Correct |
7 ms |
1748 KB |
Output is correct |
8 |
Correct |
9 ms |
1784 KB |
Output is correct |
9 |
Correct |
26 ms |
1952 KB |
Output is correct |
10 |
Correct |
35 ms |
1752 KB |
Output is correct |
11 |
Correct |
13 ms |
1724 KB |
Output is correct |
12 |
Correct |
42 ms |
1748 KB |
Output is correct |
13 |
Correct |
15 ms |
1748 KB |
Output is correct |
14 |
Correct |
39 ms |
2004 KB |
Output is correct |
15 |
Correct |
43 ms |
1828 KB |
Output is correct |
16 |
Correct |
42 ms |
2132 KB |
Output is correct |
17 |
Correct |
6 ms |
1748 KB |
Output is correct |
18 |
Correct |
10 ms |
1748 KB |
Output is correct |
19 |
Correct |
34 ms |
1868 KB |
Output is correct |
20 |
Correct |
31 ms |
1748 KB |
Output is correct |
21 |
Correct |
5 ms |
1620 KB |
Output is correct |
22 |
Correct |
11 ms |
1736 KB |
Output is correct |
23 |
Correct |
73 ms |
1804 KB |
Output is correct |
24 |
Correct |
40 ms |
1748 KB |
Output is correct |
25 |
Correct |
84 ms |
1876 KB |
Output is correct |
26 |
Correct |
75 ms |
1864 KB |
Output is correct |
27 |
Correct |
69 ms |
2084 KB |
Output is correct |
28 |
Correct |
50 ms |
1748 KB |
Output is correct |
29 |
Correct |
24 ms |
1620 KB |
Output is correct |
30 |
Correct |
57 ms |
1848 KB |
Output is correct |
31 |
Correct |
17 ms |
1736 KB |
Output is correct |
32 |
Correct |
48 ms |
2004 KB |
Output is correct |
33 |
Correct |
48 ms |
1828 KB |
Output is correct |
34 |
Correct |
38 ms |
2220 KB |
Output is correct |
35 |
Correct |
7 ms |
1840 KB |
Output is correct |
36 |
Correct |
12 ms |
1748 KB |
Output is correct |
37 |
Correct |
27 ms |
1876 KB |
Output is correct |
38 |
Correct |
37 ms |
1736 KB |
Output is correct |
39 |
Correct |
8 ms |
1620 KB |
Output is correct |
40 |
Correct |
10 ms |
1620 KB |
Output is correct |
41 |
Correct |
80 ms |
1800 KB |
Output is correct |
42 |
Correct |
36 ms |
1748 KB |
Output is correct |
43 |
Correct |
65 ms |
1976 KB |
Output is correct |
44 |
Correct |
68 ms |
1928 KB |
Output is correct |
45 |
Correct |
71 ms |
2100 KB |
Output is correct |
46 |
Correct |
71 ms |
1792 KB |
Output is correct |
47 |
Correct |
8 ms |
1620 KB |
Output is correct |
48 |
Correct |
13 ms |
1732 KB |
Output is correct |
49 |
Correct |
145 ms |
2096 KB |
Output is correct |
50 |
Correct |
70 ms |
1736 KB |
Output is correct |
51 |
Correct |
134 ms |
2216 KB |
Output is correct |
52 |
Correct |
139 ms |
2020 KB |
Output is correct |
53 |
Correct |
155 ms |
2100 KB |
Output is correct |
54 |
Correct |
168 ms |
1972 KB |
Output is correct |
55 |
Correct |
15 ms |
1732 KB |
Output is correct |
56 |
Correct |
45 ms |
1748 KB |
Output is correct |
57 |
Correct |
18 ms |
1748 KB |
Output is correct |
58 |
Correct |
63 ms |
2108 KB |
Output is correct |
59 |
Correct |
55 ms |
1776 KB |
Output is correct |
60 |
Correct |
40 ms |
2132 KB |
Output is correct |
61 |
Correct |
5 ms |
1836 KB |
Output is correct |
62 |
Correct |
9 ms |
1776 KB |
Output is correct |
63 |
Correct |
28 ms |
1864 KB |
Output is correct |
64 |
Correct |
50 ms |
1752 KB |
Output is correct |
65 |
Correct |
8 ms |
1728 KB |
Output is correct |
66 |
Correct |
11 ms |
1620 KB |
Output is correct |
67 |
Correct |
89 ms |
1800 KB |
Output is correct |
68 |
Correct |
34 ms |
1732 KB |
Output is correct |
69 |
Correct |
69 ms |
1876 KB |
Output is correct |
70 |
Correct |
80 ms |
1924 KB |
Output is correct |
71 |
Correct |
65 ms |
2100 KB |
Output is correct |
72 |
Correct |
60 ms |
1788 KB |
Output is correct |
73 |
Correct |
5 ms |
1620 KB |
Output is correct |
74 |
Correct |
9 ms |
1736 KB |
Output is correct |
75 |
Correct |
142 ms |
2108 KB |
Output is correct |
76 |
Correct |
72 ms |
1736 KB |
Output is correct |
77 |
Correct |
162 ms |
2132 KB |
Output is correct |
78 |
Correct |
149 ms |
2028 KB |
Output is correct |
79 |
Correct |
131 ms |
2108 KB |
Output is correct |
80 |
Correct |
140 ms |
1876 KB |
Output is correct |
81 |
Correct |
447 ms |
1860 KB |
Output is correct |
82 |
Correct |
202 ms |
1756 KB |
Output is correct |
83 |
Correct |
446 ms |
1820 KB |
Output is correct |
84 |
Correct |
429 ms |
2092 KB |
Output is correct |
85 |
Correct |
9 ms |
1620 KB |
Output is correct |
86 |
Correct |
9 ms |
1728 KB |
Output is correct |
87 |
Correct |
376 ms |
1976 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |