Submission #638373

#	Time	Username	Problem	Language	Result	Execution time	Memory
638373		shmad	Feast (NOI19_feast)	C++17	0 / 100	173 ms	87968 KiB

feast

#pragma GCC optimize("O3", "unroll-loops") // "Ofast" 	
#pragma GCC target("avx2", "bmi", "bmi2", "lzcnt", "popcnt") 

#include <bits/stdc++.h>

//#define int long long
#define vt vector
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
#define ff first
#define ss second
#define dbg(x) cerr << #x << " = " << x << '\n'
#define bit(x, i) ((x) >> (i) & 1)

using namespace std;
using ll = long long;
using pii = pair<int, int>;
using vvt = vt< vt<int> >;

const int N = 1e6 + 5, mod = 1e9 + 7, B = 500;
const ll inf = 1e18 + 7, LIM = (1ll << 60);
const double eps = 1e-6;

int n, k, a[N];
ll p[N], dp[2005][2005];

void solve () {
	cin >> n >> k;
	for (int i = 1; i <= n; i++) cin >> a[i], p[i] = p[i - 1] + a[i];
	ll mx = 0;
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= k; j++) {
			dp[i][j] = max(dp[i - 1][j], p[i] + mx);
			mx = max(mx, dp[i][j - 1] - p[i]);
		}
	}
	cout << dp[n][k];
	cout << '\n';
}

bool testcases = 0;

signed main() {
#ifdef ONLINE_JUDGE
	freopen(".in", "r", stdin);
	freopen(".out", "w", stdout);
#endif
	cin.tie(0) -> sync_with_stdio(0);
	int test = 1;
	if (testcases) cin >> test;
	for (int cs = 1; cs <= test; cs++) {
		solve();
	}
}

• Subtask 1: 0 / 4
• Subtask 2: 0 / 8
• Subtask 3: 0 / 18
• Subtask 4: 0 / 10
• Subtask 5: 0 / 11
• Subtask 6: 0 / 20
• Subtask 7: 0 / 29