Submission #1302325

#	Time	Username	Problem	Language	Result	Execution time	Memory
1302325		caterpillow	Feast (NOI19_feast)	C++17	10 / 100	1 ms	576 KiB

feast

#include <bits/stdc++.h>

using namespace std;
using ll = long long;
const ll INF = 1e18;

template<class T> 
void chmax(T &x, T y) { x = max(x, y); }

int main() {
    cin.tie(0)->sync_with_stdio(0);
    
    int n, k; cin >> n >> k;
    assert(n <= 100 && k <= 100);
    vector<ll> a(n);
    for (ll &x : a) cin >> x;
    vector dp(n + 1, vector(k + 1, array<ll, 2>{-INF, -INF})); // pos, taken, closed/open
    dp[0][0][0] = 0;
    for (int i = 0; i <= n; i++) {
        for (int j = 0; j <= k; j++) {
            chmax(dp[i][j][0], dp[i][j][1]);
            if (j < k) chmax(dp[i][j + 1][1], dp[i][j][0]);
            if (i < n) {
                chmax(dp[i + 1][j][0], dp[i][j][0]);
                chmax(dp[i + 1][j][1], dp[i][j][1] + a[i]);
            }
        }
    }
    cout << dp[n][k][0] << '\n';
}

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