Submission #857824

# Submission time Handle Problem Language Result Execution time Memory
857824 2023-10-07T03:55:58 Z 12345678 Split the sequence (APIO14_sequence) C++17
100 / 100
1226 ms 84944 KB
#include <bits/stdc++.h>

using namespace std;

#define ll long long

const int kx=2e2+5, nx=1e5+5;

int n, k;
ll dp[kx][nx], qs[nx];
int bk[kx][nx];

void solve(int l, int r, int optl, int optr, int layer)
{
    if (l>r) return;
    int md=(l+r)/2, c=layer%2, pv=1-c;
    pair<ll, ll> p={LLONG_MAX, 0};
    for (int i=optl; i<=min(optr, md-1); i++) if (dp[pv][i]!=LLONG_MAX) p=min(p, {dp[pv][i]+(qs[md]-qs[i])*(qs[md]-qs[i]), i});
    dp[c][md]=p.first;
    bk[layer][md]=p.second;
    solve(l, md-1, optl, p.second, layer);
    solve(md+1, r, p.second, optr, layer);
}

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n>>k;
    for (int i=1; i<=n; i++) cin>>qs[i], qs[i]+=qs[i-1];
    for (int i=0; i<2; i++) for (int j=0; j<nx; j++) dp[i][j]=LLONG_MAX;
    dp[0][0]=0;
    for (int i=1; i<=k+1; i++) 
    {
        for (int j=0; j<nx; j++) dp[i%2][j]=LLONG_MAX;
        solve(1, n, 0, n, i);
    }
    cout<<(qs[n]*qs[n]-dp[(k+1)%2][n])/2<<'\n';
    ll l=n, ly=k+1;
    while (ly>1)
    {
        l=bk[ly][l];
        ly--;
        cout<<l<<' ';
    }
}
# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB contestant found the optimal answer: 108 == 108
2 Correct 1 ms 6492 KB contestant found the optimal answer: 999 == 999
3 Correct 1 ms 6492 KB contestant found the optimal answer: 0 == 0
4 Correct 2 ms 8540 KB contestant found the optimal answer: 1542524 == 1542524
5 Correct 2 ms 8540 KB contestant found the optimal answer: 4500000000 == 4500000000
6 Correct 1 ms 6492 KB contestant found the optimal answer: 1 == 1
7 Correct 1 ms 6492 KB contestant found the optimal answer: 1 == 1
8 Correct 1 ms 6492 KB contestant found the optimal answer: 1 == 1
9 Correct 1 ms 6492 KB contestant found the optimal answer: 100400096 == 100400096
10 Correct 1 ms 6744 KB contestant found the optimal answer: 900320000 == 900320000
11 Correct 1 ms 6488 KB contestant found the optimal answer: 3698080248 == 3698080248
12 Correct 2 ms 6492 KB contestant found the optimal answer: 3200320000 == 3200320000
13 Correct 1 ms 6492 KB contestant found the optimal answer: 140072 == 140072
14 Correct 2 ms 6744 KB contestant found the optimal answer: 376041456 == 376041456
15 Correct 1 ms 6492 KB contestant found the optimal answer: 805 == 805
16 Correct 1 ms 6492 KB contestant found the optimal answer: 900189994 == 900189994
17 Correct 1 ms 6492 KB contestant found the optimal answer: 999919994 == 999919994
# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB contestant found the optimal answer: 1093956 == 1093956
2 Correct 1 ms 6492 KB contestant found the optimal answer: 302460000 == 302460000
3 Correct 6 ms 24924 KB contestant found the optimal answer: 122453454361 == 122453454361
4 Correct 1 ms 6492 KB contestant found the optimal answer: 93663683509 == 93663683509
5 Correct 2 ms 10588 KB contestant found the optimal answer: 1005304678 == 1005304678
6 Correct 2 ms 8540 KB contestant found the optimal answer: 933702 == 933702
7 Correct 3 ms 14684 KB contestant found the optimal answer: 25082842857 == 25082842857
8 Correct 2 ms 10584 KB contestant found the optimal answer: 687136 == 687136
9 Correct 2 ms 8540 KB contestant found the optimal answer: 27295930079 == 27295930079
10 Correct 2 ms 10588 KB contestant found the optimal answer: 29000419931 == 29000419931
# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB contestant found the optimal answer: 610590000 == 610590000
2 Correct 1 ms 6492 KB contestant found the optimal answer: 311760000 == 311760000
3 Correct 23 ms 84476 KB contestant found the optimal answer: 1989216017013 == 1989216017013
4 Correct 1 ms 6492 KB contestant found the optimal answer: 1499437552673 == 1499437552673
5 Correct 15 ms 59740 KB contestant found the optimal answer: 1019625819 == 1019625819
6 Correct 20 ms 76380 KB contestant found the optimal answer: 107630884 == 107630884
7 Correct 23 ms 84572 KB contestant found the optimal answer: 475357671774 == 475357671774
8 Correct 5 ms 22876 KB contestant found the optimal answer: 193556962 == 193556962
9 Correct 5 ms 16732 KB contestant found the optimal answer: 482389919803 == 482389919803
10 Correct 7 ms 27100 KB contestant found the optimal answer: 490686959791 == 490686959791
# Verdict Execution time Memory Grader output
1 Correct 2 ms 6492 KB contestant found the optimal answer: 21503404 == 21503404
2 Correct 1 ms 6488 KB contestant found the optimal answer: 140412195 == 140412195
3 Correct 25 ms 84572 KB contestant found the optimal answer: 49729674225461 == 49729674225461
4 Correct 2 ms 6492 KB contestant found the optimal answer: 37485571387523 == 37485571387523
5 Correct 28 ms 84520 KB contestant found the optimal answer: 679388326 == 679388326
6 Correct 23 ms 72028 KB contestant found the optimal answer: 4699030287 == 4699030287
7 Correct 26 ms 84560 KB contestant found the optimal answer: 12418819758185 == 12418819758185
8 Correct 25 ms 84564 KB contestant found the optimal answer: 31093317350 == 31093317350
9 Correct 6 ms 21084 KB contestant found the optimal answer: 12194625429236 == 12194625429236
10 Correct 15 ms 37852 KB contestant found the optimal answer: 12345131038664 == 12345131038664
# Verdict Execution time Memory Grader output
1 Correct 4 ms 6492 KB contestant found the optimal answer: 1818678304 == 1818678304
2 Correct 4 ms 6492 KB contestant found the optimal answer: 1326260195 == 1326260195
3 Correct 73 ms 84552 KB contestant found the optimal answer: 4973126687469639 == 4973126687469639
4 Correct 4 ms 6488 KB contestant found the optimal answer: 3748491676694116 == 3748491676694116
5 Correct 76 ms 53772 KB contestant found the optimal answer: 1085432199 == 1085432199
6 Correct 74 ms 59896 KB contestant found the optimal answer: 514790755404 == 514790755404
7 Correct 78 ms 64220 KB contestant found the optimal answer: 1256105310476641 == 1256105310476641
8 Correct 50 ms 53748 KB contestant found the optimal answer: 3099592898816 == 3099592898816
9 Correct 70 ms 59728 KB contestant found the optimal answer: 1241131419367412 == 1241131419367412
10 Correct 89 ms 76368 KB contestant found the optimal answer: 1243084101967798 == 1243084101967798
# Verdict Execution time Memory Grader output
1 Correct 23 ms 6488 KB contestant found the optimal answer: 19795776960 == 19795776960
2 Correct 24 ms 6992 KB contestant found the optimal answer: 19874432173 == 19874432173
3 Correct 626 ms 84944 KB contestant found the optimal answer: 497313449256899208 == 497313449256899208
4 Correct 18 ms 6884 KB contestant found the optimal answer: 374850090734572421 == 374850090734572421
5 Correct 1226 ms 84732 KB contestant found the optimal answer: 36183271951 == 36183271951
6 Correct 726 ms 60116 KB contestant found the optimal answer: 51629847150471 == 51629847150471
7 Correct 641 ms 64688 KB contestant found the optimal answer: 124074747024496432 == 124074747024496432
8 Correct 459 ms 54152 KB contestant found the optimal answer: 309959349080800 == 309959349080800
9 Correct 620 ms 60248 KB contestant found the optimal answer: 124113525649823701 == 124113525649823701
10 Correct 786 ms 76608 KB contestant found the optimal answer: 124309619349406845 == 124309619349406845