#include <bits/stdc++.h>
using namespace std;
#define int long long
struct line{
int m,n,idx_1,idx_2;
line(int m,int n,int idx_1,int idx_2):m(m),n(n),idx_1(idx_1),idx_2(idx_2){}
int operator()(int x) const{
return x*m + n;
}
};
long double intersection(line a,line b){
return (long double)(a.n-b.n)/(long double)(b.m-a.m);
}
void addline(deque<line> &hull, line x){
while(hull.size()>=2 and intersection(hull.back(),x)<=intersection(hull[hull.size()-2],hull.back()))hull.pop_back();
hull.emplace_back(x);
}
tuple<int,int,int> get(deque<line> &hull, int x){
while(hull.size()>=2 and hull.front()(x)<=hull[1](x))hull.pop_front();
return {hull.front()(x),hull.front().idx_1,hull.front().idx_2};
}
int DP[100001][202];
pair<int,int> back[100001][202];
deque<line> hulls[202];
int P[100001];
int32_t main(){
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
int n,k;
cin >> n >> k;k++;
for(int i=1;i<=n;i++)cin>>P[i];
for(int i=1;i<=n;i++)P[i]+=P[i-1];
// for(int i=0;i<=k;i++)addline(hulls[i],{0,0,0,0});
for(int i=1;i<=n;i++){
for(int j=k;j>1;j--){
for(int x=i-1;x>=0;x--){
if(DP[i][j]<P[i]*P[x]-P[x]*P[x]+DP[x][j-1]){
DP[i][j] = P[i]*P[x]-P[x]*P[x]+DP[x][j-1];
back[i][j] = {x,j-1};
}
}
// auto [ans,last1,last2] = get(hulls[j-1],P[i]);
// DP[i][j] = ans;
// back[i][j] = {last1,last2};
// addline(hulls[j],{P[i],DP[i][j]-P[i]*P[i],i,j});
}
}
cout << DP[n][k] << '\n';
vector<int> ans;
auto [curr1,curr2] = back[n][k];
while(curr1 and curr2){
ans.emplace_back(curr1);
auto [c1,c2] = back[curr1][curr2];curr1=c1;curr2=c2;
}
for(int&i:ans)cout<<i<<' ';
cout << '\n';
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
contestant found the optimal answer: 108 == 108 |
2 |
Correct |
1 ms |
2652 KB |
contestant found the optimal answer: 999 == 999 |
3 |
Incorrect |
1 ms |
2480 KB |
Unexpected end of file - int32 expected |
4 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
2652 KB |
contestant found the optimal answer: 1093956 == 1093956 |
2 |
Correct |
1 ms |
2652 KB |
contestant found the optimal answer: 302460000 == 302460000 |
3 |
Correct |
1 ms |
2652 KB |
contestant found the optimal answer: 122453454361 == 122453454361 |
4 |
Correct |
1 ms |
2652 KB |
contestant found the optimal answer: 93663683509 == 93663683509 |
5 |
Correct |
1 ms |
2652 KB |
contestant found the optimal answer: 1005304678 == 1005304678 |
6 |
Correct |
1 ms |
2652 KB |
contestant found the optimal answer: 933702 == 933702 |
7 |
Correct |
1 ms |
2652 KB |
contestant found the optimal answer: 25082842857 == 25082842857 |
8 |
Correct |
1 ms |
2652 KB |
contestant found the optimal answer: 687136 == 687136 |
9 |
Correct |
1 ms |
2652 KB |
contestant found the optimal answer: 27295930079 == 27295930079 |
10 |
Correct |
1 ms |
2652 KB |
contestant found the optimal answer: 29000419931 == 29000419931 |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
2908 KB |
contestant found the optimal answer: 610590000 == 610590000 |
2 |
Correct |
1 ms |
2908 KB |
contestant found the optimal answer: 311760000 == 311760000 |
3 |
Correct |
5 ms |
2908 KB |
contestant found the optimal answer: 1989216017013 == 1989216017013 |
4 |
Correct |
1 ms |
2908 KB |
contestant found the optimal answer: 1499437552673 == 1499437552673 |
5 |
Correct |
4 ms |
2908 KB |
contestant found the optimal answer: 1019625819 == 1019625819 |
6 |
Correct |
4 ms |
2908 KB |
contestant found the optimal answer: 107630884 == 107630884 |
7 |
Correct |
5 ms |
2908 KB |
contestant found the optimal answer: 475357671774 == 475357671774 |
8 |
Correct |
2 ms |
2908 KB |
contestant found the optimal answer: 193556962 == 193556962 |
9 |
Correct |
1 ms |
2908 KB |
contestant found the optimal answer: 482389919803 == 482389919803 |
10 |
Correct |
2 ms |
2908 KB |
contestant found the optimal answer: 490686959791 == 490686959791 |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
6488 KB |
contestant found the optimal answer: 21503404 == 21503404 |
2 |
Correct |
3 ms |
6236 KB |
contestant found the optimal answer: 140412195 == 140412195 |
3 |
Correct |
102 ms |
6188 KB |
contestant found the optimal answer: 49729674225461 == 49729674225461 |
4 |
Correct |
3 ms |
6236 KB |
contestant found the optimal answer: 37485571387523 == 37485571387523 |
5 |
Correct |
105 ms |
6068 KB |
contestant found the optimal answer: 679388326 == 679388326 |
6 |
Correct |
91 ms |
6032 KB |
contestant found the optimal answer: 4699030287 == 4699030287 |
7 |
Correct |
108 ms |
6124 KB |
contestant found the optimal answer: 12418819758185 == 12418819758185 |
8 |
Correct |
103 ms |
6224 KB |
contestant found the optimal answer: 31093317350 == 31093317350 |
9 |
Correct |
23 ms |
6224 KB |
contestant found the optimal answer: 12194625429236 == 12194625429236 |
10 |
Correct |
43 ms |
6236 KB |
contestant found the optimal answer: 12345131038664 == 12345131038664 |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
432 ms |
49124 KB |
contestant found the optimal answer: 1818678304 == 1818678304 |
2 |
Correct |
399 ms |
49256 KB |
contestant found the optimal answer: 1326260195 == 1326260195 |
3 |
Execution timed out |
2031 ms |
21708 KB |
Time limit exceeded |
4 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
2051 ms |
95236 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |