oj.uz

Submission #997138

# Submission time Handle Problem Language Result Execution time Memory
997138 2024-06-11T17:58:39 Z anonymous321 Feast (NOI19_feast) C++17
0 / 100
 174 ms 11648 KB 
// https://oj.uz/problem/view/NOI19_feast
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

int main() {
    int n, k;
    cin >> n >> k;
    vector<ll> a (n);
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    
    ll ans = 0;
    ll lo = -1e9;
    ll hi = 1e9;
    while (lo < hi) {
        ll mid = lo + (hi - lo)/2;
        vector<ll> dp (n+1, 0);
        vector<ll> p (n+1, 0);
        ll best = 0;
        int id = 0;
        vector<int> cnt (n+1, 0);
        for (int i = 0; i < n; i++) {
            p[i+1] = p[i] + a[i];
            dp[i+1] = max(dp[i+1], dp[i]);
            cnt[i+1] = cnt[i];
            if (dp[i+1] < best + p[i+1] - lo) {
                dp[i+1] = best + p[i+1] - lo;
                cnt[i+1] = cnt[id] + 1;
            }
            if (best < dp[i+1] - p[i+1]) {
                best = dp[i+1] - p[i+1];
                id = i+1;
            }
        }
        
        if (cnt[n] <= k) {
            hi = mid;
            ans = dp[n];
        } else {
            lo = mid+1;
        }
    }
    cout << ans + k*lo << "\n";
    return 0;
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 136 ms 11292 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 101 ms 9652 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 18.0

# Verdict Execution time Memory Grader output
1 Incorrect 174 ms 11648 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 29.0

# Verdict Execution time Memory Grader output
1 Incorrect 136 ms 11292 KB Output isn't correct
2 Halted 0 ms 0 KB -