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Submission #997108

# Submission time Handle Problem Language Result Execution time Memory
997108 2024-06-11T17:40:34 Z anonymous321 Feast (NOI19_feast) C++17
4 / 100
 176 ms 10612 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 = 0;
    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
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 141 ms 8512 KB Output is correct
2 Correct 139 ms 8640 KB Output is correct
3 Correct 167 ms 8732 KB Output is correct
4 Correct 138 ms 8676 KB Output is correct
5 Correct 134 ms 10612 KB Output is correct
6 Correct 132 ms 8520 KB Output is correct
7 Correct 137 ms 8456 KB Output is correct
8 Correct 128 ms 8712 KB Output is correct
9 Correct 119 ms 8444 KB Output is correct
10 Correct 135 ms 8492 KB Output is correct

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 96 ms 8600 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 18.0

# Verdict Execution time Memory Grader output
1 Incorrect 176 ms 8576 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 Correct 141 ms 8512 KB Output is correct
2 Correct 139 ms 8640 KB Output is correct
3 Correct 167 ms 8732 KB Output is correct
4 Correct 138 ms 8676 KB Output is correct
5 Correct 134 ms 10612 KB Output is correct
6 Correct 132 ms 8520 KB Output is correct
7 Correct 137 ms 8456 KB Output is correct
8 Correct 128 ms 8712 KB Output is correct
9 Correct 119 ms 8444 KB Output is correct
10 Correct 135 ms 8492 KB Output is correct
11 Incorrect 96 ms 8600 KB Output isn't correct
12 Halted 0 ms 0 KB -