#include <bits/stdc++.h>
using namespace std;
//#define int long long
typedef long long ll;
ll dp[2][100005];
int pre[205][100005];
ll P[100005], A[100005];
deque<pair<pair<ll, ll> , int> > dq;
ll f(pair<ll, ll> x, ll y){
return x.first*y + x.second;
}
long double intersect(ll a, ll b, ll c, ll d){
return (long double)(d-b)/(a-c);
}
void ins(ll m , ll c, int in){
while(dq.size() > 1){
int s = dq.size();
if(intersect(dq.back().first.first, dq.back().first.second,m,c) <= intersect(dq[s-2].first.first, dq[s-2].first.second, m,c))dq.pop_back();
else break;
}
dq.push_back(make_pair(make_pair(m,c), in));
}
pair<ll, int> query(ll x){
while(dq.size() > 1){
if(f(dq[0].first, x) < f(dq[1].first, x))dq.pop_front();
else break;
}
return {f(dq[0].first, x), dq[0].second};
}
main(){
ios::sync_with_stdio(0);cin.tie(0);
int n,k;cin >> n >> k;
for(int i=1;i<=n;i++)cin >> A[i], P[i] = P[i-1] + A[i];
for(int i=1;i<=n;i++)dp[1][i] = (P[n] - P[i])*P[i];
for(int i=2;i<=k;i++){
int tmp = i %2;
for(int j=i;j<=n-(k-i)+1;j++){
ins(P[j-1] + P[n], -P[n] * P[j-1] + dp[1-tmp][j-1], j-1);
pair<ll,ll>x = query(P[j]);
dp[tmp][j] = x.first- P[j] * P[j];
pre[i][j] = x.second;
}
dq.clear();
}
ll maxi = -1e9; int in;
for(int i=1;i<=n;i++)if(dp[k%2][i] > maxi)maxi = dp[k%2][i], in = i;
cout << maxi << '\n';
cout << in << " ";
int p = pre[k][in];
while(p)cout << p << " ", k--, p = pre[k][p];
/*
cout << "\n\n";
for(int i=1;i<=k;i++){
for(int j=i;j<=n;j++)cout << dp[i][j].first << " " << dp[i][j].second << " ";
cout << '\n';
}
*/
return 0;
}
Compilation message
sequence.cpp:31:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
31 | main(){
| ^~~~
sequence.cpp: In function 'int main()':
sequence.cpp:50:6: warning: 'in' may be used uninitialized in this function [-Wmaybe-uninitialized]
50 | int p = pre[k][in];
| ^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
340 KB |
contestant found the optimal answer: 108 == 108 |
| 2 |
Correct |
0 ms |
340 KB |
contestant found the optimal answer: 999 == 999 |
| 3 |
Correct |
0 ms |
340 KB |
contestant found the optimal answer: 0 == 0 |
| 4 |
Correct |
0 ms |
340 KB |
contestant found the optimal answer: 1542524 == 1542524 |
| 5 |
Correct |
0 ms |
340 KB |
contestant found the optimal answer: 4500000000 == 4500000000 |
| 6 |
Correct |
0 ms |
212 KB |
contestant found the optimal answer: 1 == 1 |
| 7 |
Correct |
1 ms |
328 KB |
contestant found the optimal answer: 1 == 1 |
| 8 |
Correct |
0 ms |
324 KB |
contestant found the optimal answer: 1 == 1 |
| 9 |
Correct |
1 ms |
340 KB |
contestant found the optimal answer: 100400096 == 100400096 |
| 10 |
Correct |
1 ms |
340 KB |
contestant found the optimal answer: 900320000 == 900320000 |
| 11 |
Correct |
0 ms |
328 KB |
contestant found the optimal answer: 3698080248 == 3698080248 |
| 12 |
Correct |
1 ms |
324 KB |
contestant found the optimal answer: 3200320000 == 3200320000 |
| 13 |
Correct |
1 ms |
340 KB |
contestant found the optimal answer: 140072 == 140072 |
| 14 |
Correct |
1 ms |
328 KB |
contestant found the optimal answer: 376041456 == 376041456 |
| 15 |
Correct |
1 ms |
332 KB |
contestant found the optimal answer: 805 == 805 |
| 16 |
Correct |
1 ms |
328 KB |
contestant found the optimal answer: 900189994 == 900189994 |
| 17 |
Correct |
1 ms |
328 KB |
contestant found the optimal answer: 999919994 == 999919994 |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
340 KB |
contestant found the optimal answer: 1093956 == 1093956 |
| 2 |
Correct |
0 ms |
340 KB |
contestant found the optimal answer: 302460000 == 302460000 |
| 3 |
Correct |
1 ms |
468 KB |
contestant found the optimal answer: 122453454361 == 122453454361 |
| 4 |
Correct |
1 ms |
324 KB |
contestant found the optimal answer: 93663683509 == 93663683509 |
| 5 |
Correct |
1 ms |
340 KB |
contestant found the optimal answer: 1005304678 == 1005304678 |
| 6 |
Correct |
1 ms |
324 KB |
contestant found the optimal answer: 933702 == 933702 |
| 7 |
Correct |
1 ms |
468 KB |
contestant found the optimal answer: 25082842857 == 25082842857 |
| 8 |
Correct |
1 ms |
340 KB |
contestant found the optimal answer: 687136 == 687136 |
| 9 |
Correct |
0 ms |
340 KB |
contestant found the optimal answer: 27295930079 == 27295930079 |
| 10 |
Correct |
0 ms |
340 KB |
contestant found the optimal answer: 29000419931 == 29000419931 |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
340 KB |
contestant found the optimal answer: 610590000 == 610590000 |
| 2 |
Correct |
1 ms |
340 KB |
contestant found the optimal answer: 311760000 == 311760000 |
| 3 |
Correct |
1 ms |
1236 KB |
contestant found the optimal answer: 1989216017013 == 1989216017013 |
| 4 |
Correct |
1 ms |
328 KB |
contestant found the optimal answer: 1499437552673 == 1499437552673 |
| 5 |
Correct |
1 ms |
980 KB |
contestant found the optimal answer: 1019625819 == 1019625819 |
| 6 |
Correct |
1 ms |
1220 KB |
contestant found the optimal answer: 107630884 == 107630884 |
| 7 |
Correct |
1 ms |
1220 KB |
contestant found the optimal answer: 475357671774 == 475357671774 |
| 8 |
Correct |
1 ms |
584 KB |
contestant found the optimal answer: 193556962 == 193556962 |
| 9 |
Correct |
1 ms |
456 KB |
contestant found the optimal answer: 482389919803 == 482389919803 |
| 10 |
Correct |
2 ms |
596 KB |
contestant found the optimal answer: 490686959791 == 490686959791 |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
contestant found the optimal answer: 21503404 == 21503404 |
| 2 |
Correct |
1 ms |
340 KB |
contestant found the optimal answer: 140412195 == 140412195 |
| 3 |
Correct |
5 ms |
1876 KB |
contestant found the optimal answer: 49729674225461 == 49729674225461 |
| 4 |
Correct |
1 ms |
340 KB |
contestant found the optimal answer: 37485571387523 == 37485571387523 |
| 5 |
Correct |
7 ms |
1860 KB |
contestant found the optimal answer: 679388326 == 679388326 |
| 6 |
Correct |
6 ms |
1748 KB |
contestant found the optimal answer: 4699030287 == 4699030287 |
| 7 |
Correct |
6 ms |
1876 KB |
contestant found the optimal answer: 12418819758185 == 12418819758185 |
| 8 |
Correct |
5 ms |
1876 KB |
contestant found the optimal answer: 31093317350 == 31093317350 |
| 9 |
Correct |
2 ms |
724 KB |
contestant found the optimal answer: 12194625429236 == 12194625429236 |
| 10 |
Correct |
3 ms |
980 KB |
contestant found the optimal answer: 12345131038664 == 12345131038664 |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
852 KB |
contestant found the optimal answer: 1818678304 == 1818678304 |
| 2 |
Correct |
2 ms |
852 KB |
contestant found the optimal answer: 1326260195 == 1326260195 |
| 3 |
Correct |
63 ms |
9356 KB |
contestant found the optimal answer: 4973126687469639 == 4973126687469639 |
| 4 |
Correct |
2 ms |
980 KB |
contestant found the optimal answer: 3748491676694116 == 3748491676694116 |
| 5 |
Correct |
49 ms |
5904 KB |
contestant found the optimal answer: 1085432199 == 1085432199 |
| 6 |
Correct |
63 ms |
6748 KB |
contestant found the optimal answer: 514790755404 == 514790755404 |
| 7 |
Correct |
54 ms |
7168 KB |
contestant found the optimal answer: 1256105310476641 == 1256105310476641 |
| 8 |
Correct |
40 ms |
5984 KB |
contestant found the optimal answer: 3099592898816 == 3099592898816 |
| 9 |
Correct |
49 ms |
6736 KB |
contestant found the optimal answer: 1241131419367412 == 1241131419367412 |
| 10 |
Correct |
66 ms |
8488 KB |
contestant found the optimal answer: 1243084101967798 == 1243084101967798 |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
14 ms |
5180 KB |
contestant found the optimal answer: 19795776960 == 19795776960 |
| 2 |
Correct |
15 ms |
5272 KB |
contestant found the optimal answer: 19874432173 == 19874432173 |
| 3 |
Correct |
607 ms |
82780 KB |
contestant found the optimal answer: 497313449256899208 == 497313449256899208 |
| 4 |
Correct |
17 ms |
5592 KB |
contestant found the optimal answer: 374850090734572421 == 374850090734572421 |
| 5 |
Correct |
790 ms |
82348 KB |
contestant found the optimal answer: 36183271951 == 36183271951 |
| 6 |
Correct |
538 ms |
58976 KB |
contestant found the optimal answer: 51629847150471 == 51629847150471 |
| 7 |
Correct |
546 ms |
63216 KB |
contestant found the optimal answer: 124074747024496432 == 124074747024496432 |
| 8 |
Correct |
441 ms |
52068 KB |
contestant found the optimal answer: 309959349080800 == 309959349080800 |
| 9 |
Correct |
475 ms |
59148 KB |
contestant found the optimal answer: 124113525649823701 == 124113525649823701 |
| 10 |
Correct |
677 ms |
74760 KB |
contestant found the optimal answer: 124309619349406845 == 124309619349406845 |
