Submission #245156

#	Time	Username	Problem	Language	Result	Execution time	Memory
245156		thomas_li	Split the sequence (APIO14_sequence)	C++17	0 / 100	2092 ms	4600 KiB

sequence

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/priority_queue.hpp>
using namespace std;
using ll = long long;
using ld = long double;
using vi = vector<int>;
using pi = pair<int, int>;
using pll = pair<ll, ll>;
constexpr int INF = 0x3f3f3f3f; constexpr ll LLINF = 0x3f3f3f3f3f3f3f3f;
#ifdef __MINGW32__
inline int getchar_unlocked() { return _getchar_nolock(); }
inline int putchar_unlocked(int c) { return _putchar_nolock(c); }
#endif
#define gc getchar_unlocked()
#define pc(x) putchar_unlocked(x)
template<typename T> void scan(T &x){x = 0;bool _=0; T c=gc;_=c==45;c=_?gc:c;while(c<48||c>57)c=gc;for(;c<48||c>57;c=gc);for(;c>47&&c<58;c=gc)x=(x<<3)+(x<<1)+(c&15);x=_?-x:x;}
template<typename T> void printn(T n){bool _=0;_=n<0;n=_?-n:n;char snum[65];int i=0;do{snum[i++]=n%10+48;n/= 10;}while(n);--i;if (_)pc(45);while(i>=0)pc(snum[i--]);}
template<typename First, typename ... Ints> void scan(First &arg, Ints&... rest){scan(arg);scan(rest...);}
template<typename T> void print(T n){printn(n);pc(10);}
template<typename First, typename ... Ints> void print(First arg, Ints... rest){printn(arg);pc(32);print(rest...);}
#define db(x)       { cerr << #x << " = " << x << endl; }
template <typename T> void _dbarr(T* a, size_t sz){ for(int i = 0; i < sz; i++) cerr << a[i] << " \n"[i == sz-1]; }
template <typename T> void _dbarr(vector<T> a, size_t sz){ for(int i = 0; i < sz; i++) cerr << a[i] << " \n"[i == sz-1]; }
#define dbarr(x, n) {cerr << #x << ": "; _dbarr((x),(n));}
#define pb push_back
#define eb emplace_back
const int MM = 1e5+5;
int n,k,par[205][MM];

int psa[MM], dp[205][MM];

int main() 
{
	cin.tie(0)->sync_with_stdio(0);
	cin >> n >> k;

	for(int i = 1; i <= n; i++)
		cin >> psa[i], psa[i] += psa[i-1];
	
	for(int i = 1; i <= k; i++)
	{
		for(int j = 0; j <= n; j++)
		{
			for(int l = 0; l < j; l++)
			{
				ll tmp = dp[i-1][l]+(psa[j]-psa[l])*psa[l];
				if(tmp > dp[i][j])
				{
					par[i][j] = l;
					dp[i][j] = tmp;
				}
			}
		}
	}
	
	stack<int> st;
	
	int i = n, j = k;
	
	while(j >= 1)
	{
		i = par[j][i];
		j--;
		st.push(i);
	}
	cout << dp[k][n] << "\n";
	while(!st.empty())
	{
		cout << st.top() << " ";
		st.pop();
	}
	cout << "\n";
}

• Subtask 1: 0 / 11
• Subtask 2: 0 / 11
• Subtask 3: 0 / 11
• Subtask 4: 0 / 17
• Subtask 5: 0 / 21
• Subtask 6: 0 / 29