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Submission #1017159

# Submission time Handle Problem Language Result Execution time Memory
1017159 2024-07-09T04:47:25 Z Gray Split the sequence (APIO14_sequence) C++17
0 / 100
 94 ms 131072 KB 
#include <algorithm>
#include <cassert>
#include <ios>
#include <iostream>
#include <map>
#include <vector>
#define ll long long
#define ull unsigned ll
#define ld long double
#define ff first
#define ss second
#define ln "\n"
#define pll pair<ll, ll>
using namespace std;

vector<ll> dep(100001, 0), wr(201, 0), pref(100001), vals(100001);
vector<vector<ll>> link(100001, vector<ll>(201));
void get(ll l, ll r, ll optl, ll optr, ll n, ll k){
	if (l>r) return;
	ll m = (l+r)/2;
	pll optm = {-1, -1};
	for (ll i=optl; i<=m; i++){
		optm = max(optm, {dep[i]+(pref[m]-pref[i])*(pref[n]-pref[m]), i});
	}
	wr[m]=optm.ff;
	link[m][k]=optm.ss;
	get(l, m-1, optl, optm.ss, n, k);
	get(m+1, r, optm.ss, optr, n, k);
}
void solve(){
	ll n, k; cin >> n >> k;
	for (ll i=1; i<=n; i++){
		cin >> vals[i];
		pref[i]+=pref[i-1]+vals[i];
	}
	for (ll i=1; i<=k; i++){
		get(1, n, 0, n, n, i);
		dep.swap(wr);
	}
	pair<ll, ll> mx={-1, -1};
	for (ll i=0; i<=n; i++) mx=max(mx, {dep[i], i});
	cout << mx.ff << ln;
	vector<ll> ans;
	for (ll i=k; i>=1; i--){
		ans.emplace_back(mx.ss);
		mx.ss=link[mx.ss][i];
	}
	for (ll i=k-1; i>=0; i--){
		cout << ans[i] << " ";
	}
	cout << ln;
}
// dp[i][k] = maxj(dp[j][k-1]+(pref[i]-pref[j])*(pref[n]-pref[i]));
// (dp[j][k-1]-pref[j]*pref[n])+pref[j]*pref[i];

int main(){
  	ios_base::sync_with_stdio(0);
  	cin.tie(nullptr);
  	ll t=1;
  	// cin >> t;
  	while (t--)solve();
}

Subtask #1
0 / 11.0

# Verdict Execution time Memory Grader output
1 Runtime error 90 ms 131072 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Runtime error 90 ms 131072 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Runtime error 89 ms 131072 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Runtime error 88 ms 131072 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Runtime error 94 ms 131072 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Runtime error 91 ms 131072 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -