제출 #855305

#제출 시각아이디문제언어결과실행 시간메모리
855305vjudge1Split the sequence (APIO14_sequence)C++17
28 / 100
82 ms46940 KiB
#include<bits/stdc++.h>
#pragma GCC target( "sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
#pragma GCC optimize("Ofast,unroll-loops,fast-math,O3")
using namespace std;
#define int long long
#define y1 cheza
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const int N=5100;
const int B=700;
const int M=1e7+10;
const int mod=1e9+7;
const int INF=1e9;
const long double eps=1e-8;
const int dx[]={1,-1,0,0};
const int dy[]={0,0,-1,1};
const int debug=0;
int n,k;
int a[N];
int dp[N][N];
int pr[N][N];
int pref[N];
void test(){
    cin>>n>>k;
    for(int i=1;i<=n;i++){
        cin>>a[i];
        pref[i]=pref[i-1]+a[i];
    }
    for(int kk=1;kk<=k;kk++){
        for(int i=1;i<=n;i++){
            for(int j=kk-1;j<i;j++){
                int y=dp[j][kk-1]+(pref[i]-pref[j])*(pref[n]-pref[i]);
                if(y>=dp[i][kk]){
                    dp[i][kk]=y;
                    pr[i][kk]=j;
                }
            }
        }
    }
    // A B C
    // k1=AC+BC
    // k1=AB+BC
    // k1=AB+AC
    // k2=AC+BC+AB
    // k2=AB+AC+BC
    // for(int i=1;i<=k;i++){
    //     for(int j=1;j<=n;j++){
    //         cout<<dp[j][i]<<' ';
    //     }
    //     cout<<'\n';
    // }
    // for(int i=1;i<=k;i++){
    //     for(int j=1;j<=n;j++){
    //         cout<<pr[j][i]<<' ';
    //     }
    //     cout<<'\n';
    // }
    // return;
    int mx=0;
    int cur=0;
    for(int i=1;i<=n;i++){
        if(mx<=dp[i][k]){
            mx=dp[i][k];
            cur=i;
        }
    }
    vector<int>ans;
    ans.push_back(cur);
    while(k!=1){
        cur=pr[cur][k];
        k--;
        ans.push_back(cur);
    }
    cout<<mx<<'\n';
    // reverse(ans.begin(),ans.end());
    sort(ans.begin(),ans.end());
    for(auto i:ans){
        cout<<i<<' ';
    }
    cout<<'\n';
}
/*

*/
signed main(){
    // cout<<"HEllo\n";
    // freopen("INPUT.TXT","r",stdin);
    // freopen("OUTPUT.TXT","w",stdout);
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    // cout.tie(nullptr);
    long long t2=1;
    //  cin>>t2;
    // scanf("%lld",&t2);
    for(int i=1;i<=t2;i++){
        // cout<<"Case "<<i<<": ";
        test();
    }
    
    return 0;

}
/*
temmie luck

*/
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