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Submission #1115380

# Submission time Handle Problem Language Result Execution time Memory
1115380 2024-11-20T12:06:46 Z vjudge1 Feast (NOI19_feast) C++17
30 / 100
 89 ms 4688 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;

constexpr int N = int(3e5) + 5;
constexpr int MOD = int(1e9) + 7;

int a[N];

void solve(){
    int n, k;
    cin >> n >> k;
    for(int i{}; i < n; ++i){
        cin >> a[i];
    }
    __int128 l{}, r{ll(3e14)}, ans{};
    while(l <= r){
        ll m = l + r >> 1;
        pair<__int128, int> cur{a[0] - m, 1}, dp{max(cur, {})};
        for(int i = 1; i < n; ++i){
            cur = max(pair{cur.first + a[i], cur.second}, {dp.first + a[i] - m, dp.second + 1});
            dp = max(dp, cur);
        }
        if(dp.second >= k){
            ans = dp.first + k * m;
            l = m + 1;
        }
        else r = m - 1;
    }
    cout << ll(ans);
}
int main(){
    // freopen("input.txt", "r", stdin);
    // freopen("output.txt", "w", stdout);
    ios::sync_with_stdio(0);    
    cin.tie(0);
 
    int t = 1;
    // cin >> t;
    for(int i = 1; i <= t; ++i) {
        solve();
    }
}

Compilation message

feast.cpp: In function 'void solve()':
feast.cpp:19:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   19 |         ll m = l + r >> 1;
      |                ~~^~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 1360 KB Output is correct
2 Correct 51 ms 1608 KB Output is correct
3 Correct 52 ms 1616 KB Output is correct
4 Correct 50 ms 1608 KB Output is correct
5 Correct 51 ms 1616 KB Output is correct
6 Correct 50 ms 1568 KB Output is correct
7 Correct 50 ms 1360 KB Output is correct
8 Correct 50 ms 1608 KB Output is correct
9 Correct 57 ms 1360 KB Output is correct
10 Correct 49 ms 1616 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 45 ms 1360 KB Output is correct
2 Correct 50 ms 2808 KB Output is correct
3 Correct 46 ms 2652 KB Output is correct
4 Correct 45 ms 2640 KB Output is correct
5 Correct 55 ms 3524 KB Output is correct
6 Correct 56 ms 2672 KB Output is correct
7 Correct 49 ms 2640 KB Output is correct
8 Correct 59 ms 4168 KB Output is correct
9 Correct 66 ms 4504 KB Output is correct
10 Correct 48 ms 2640 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 75 ms 1784 KB Output is correct
2 Correct 78 ms 3144 KB Output is correct
3 Correct 89 ms 4556 KB Output is correct
4 Correct 75 ms 4580 KB Output is correct
5 Correct 86 ms 4424 KB Output is correct
6 Correct 81 ms 4424 KB Output is correct
7 Correct 76 ms 4504 KB Output is correct
8 Correct 75 ms 3568 KB Output is correct
9 Correct 77 ms 4688 KB Output is correct
10 Correct 77 ms 4424 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Incorrect 1 ms 336 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Incorrect 1 ms 336 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Incorrect 1 ms 336 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 1360 KB Output is correct
2 Correct 51 ms 1608 KB Output is correct
3 Correct 52 ms 1616 KB Output is correct
4 Correct 50 ms 1608 KB Output is correct
5 Correct 51 ms 1616 KB Output is correct
6 Correct 50 ms 1568 KB Output is correct
7 Correct 50 ms 1360 KB Output is correct
8 Correct 50 ms 1608 KB Output is correct
9 Correct 57 ms 1360 KB Output is correct
10 Correct 49 ms 1616 KB Output is correct
11 Correct 45 ms 1360 KB Output is correct
12 Correct 50 ms 2808 KB Output is correct
13 Correct 46 ms 2652 KB Output is correct
14 Correct 45 ms 2640 KB Output is correct
15 Correct 55 ms 3524 KB Output is correct
16 Correct 56 ms 2672 KB Output is correct
17 Correct 49 ms 2640 KB Output is correct
18 Correct 59 ms 4168 KB Output is correct
19 Correct 66 ms 4504 KB Output is correct
20 Correct 48 ms 2640 KB Output is correct
21 Correct 75 ms 1784 KB Output is correct
22 Correct 78 ms 3144 KB Output is correct
23 Correct 89 ms 4556 KB Output is correct
24 Correct 75 ms 4580 KB Output is correct
25 Correct 86 ms 4424 KB Output is correct
26 Correct 81 ms 4424 KB Output is correct
27 Correct 76 ms 4504 KB Output is correct
28 Correct 75 ms 3568 KB Output is correct
29 Correct 77 ms 4688 KB Output is correct
30 Correct 77 ms 4424 KB Output is correct
31 Correct 1 ms 336 KB Output is correct
32 Incorrect 1 ms 336 KB Output isn't correct
33 Halted 0 ms 0 KB -