Submission #969925

#	Time	Username	Problem	Language	Result	Execution time	Memory
969925		blackslex	Feast (NOI19_feast)	C++17	21 / 100	1008 ms	262144 KiB

feast

#include<bits/stdc++.h>

using namespace std;
using ll = long long;

int n, k;

int main() {
    scanf("%d %d", &n, &k);
    vector<ll> a(n + 5), pref(n + 5);
    vector<vector<ll>> dp(k + 5, vector<ll>(n + 5)), dp2(n + 5, vector<ll>(n + 5, -1e18));
    for (int i = 1; i <= n; i++) scanf("%lld", &a[i]), pref[i] = pref[i - 1] + a[i];
    for (int i = 0; i <= n; i++) {
        dp2[i][i] = pref[i];
        for (int j = i + 1; j <= n; j++) dp2[i][j] = max(dp2[i][j - 1], pref[j]);
    }
    for (int i = 1; i <= k; i++) {
        for (int j = 1; j <= n; j++) {
            for (int l = 0; l <= j; l++) dp[i][j] = max(dp[i][j], dp[i - 1][l] + dp2[l][j] - pref[l]);
        }
    }
    printf("%lld", *max_element(dp[k].begin(), dp[k].end()));
}

Compilation message (stderr)

feast.cpp: In function 'int main()':
feast.cpp:9:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |     scanf("%d %d", &n, &k);
      |     ~~~~~^~~~~~~~~~~~~~~~~
feast.cpp:12:39: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |     for (int i = 1; i <= n; i++) scanf("%lld", &a[i]), pref[i] = pref[i - 1] + a[i];
      |                                  ~~~~~^~~~~~~~~~~~~~~

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