답안 #897777

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
897777	2024-01-03T16:31:26 Z	vjudge1	Feast (NOI19_feast)	C++17	100 / 100	103 ms	10568 KB

feast

/*
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx2,fma,bmi,bmi2,sse4.2,popcnt,lzcnt")
*/

#include <bits/stdc++.h>
#define taskname ""
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define i64 long long
#define int long long
#define pb push_back
#define ff first
#define ss second
#define isz(x) (int)x.size()
using namespace std;

const int mxN = 3e5 + 5;
const int mod = 1e9 + 7;
const i64 oo = 1e18;

int n, k;
i64 a[mxN];
pair<int, int> dp[mxN];

pair<int, int> calc(i64 delta) {
    pair<int, int> mx = {0, 0}, res = {0, 0};
    for (int i = 1; i <= n; ++i) {
        int tmp = mx.ff + a[i] + delta;
        dp[i] = max(dp[i - 1], pair{tmp, mx.ss - 1});
        mx = max(mx, pair{dp[i].ff - a[i], dp[i].ss});
        res = max(res, dp[i]);
    }
    return res;
}

void solve() {
    cin >> n >> k;
    for (int i = 1; i <= n; ++i) {
        cin >> a[i];
        a[i] += a[i - 1];
    }
    i64 l = -1e12, r = 0;
    while (l < r) {
        int mid = (l + r + 1) >> 1;
        if (-calc(mid).ss <= k) l = mid;
        else r = mid - 1;
    }
    auto res = calc(l);
    cout << res.ff + res.ss * l << endl;
}

signed main() {

#ifndef CDuongg
    if(fopen(taskname".inp", "r"))
        assert(freopen(taskname".inp", "r", stdin)), assert(freopen(taskname".out", "w", stdout));
#else
    freopen("bai3.inp", "r", stdin);
    freopen("bai3.out", "w", stdout);
    auto start = chrono::high_resolution_clock::now();
#endif

    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int t = 1; //cin >> t;
    while(t--) solve();

#ifdef CDuongg
   auto end = chrono::high_resolution_clock::now();
   cout << "\n"; for(int i = 1; i <= 100; ++i) cout << '=';
   cout << "\nExecution time: " << chrono::duration_cast<chrono::milliseconds> (end - start).count() << "[ms]" << endl;
   cout << "Check array size pls sir" << endl;
#endif

}

Subtask #1
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	44 ms	7260 KB	Output is correct
2	Correct	52 ms	7512 KB	Output is correct
3	Correct	46 ms	7272 KB	Output is correct
4	Correct	46 ms	7260 KB	Output is correct
5	Correct	48 ms	7248 KB	Output is correct
6	Correct	44 ms	7380 KB	Output is correct
7	Correct	48 ms	7380 KB	Output is correct
8	Correct	48 ms	7260 KB	Output is correct
9	Correct	52 ms	7256 KB	Output is correct
10	Correct	46 ms	7488 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	42 ms	7256 KB	Output is correct
2	Correct	40 ms	8540 KB	Output is correct
3	Correct	39 ms	8540 KB	Output is correct
4	Correct	39 ms	8572 KB	Output is correct
5	Correct	44 ms	10064 KB	Output is correct
6	Correct	38 ms	8536 KB	Output is correct
7	Correct	40 ms	8540 KB	Output is correct
8	Correct	46 ms	10324 KB	Output is correct
9	Correct	44 ms	10076 KB	Output is correct
10	Correct	39 ms	8540 KB	Output is correct

Subtask #3
18.0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	67 ms	7456 KB	Output is correct
2	Correct	64 ms	10376 KB	Output is correct
3	Correct	63 ms	10468 KB	Output is correct
4	Correct	62 ms	10324 KB	Output is correct
5	Correct	65 ms	10320 KB	Output is correct
6	Correct	71 ms	10504 KB	Output is correct
7	Correct	64 ms	10324 KB	Output is correct
8	Correct	62 ms	10320 KB	Output is correct
9	Correct	62 ms	10544 KB	Output is correct
10	Correct	70 ms	10332 KB	Output is correct

Subtask #4
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	1 ms	2396 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	0 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2392 KB	Output is correct

Subtask #5
11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	1 ms	2396 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	0 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2392 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	0 ms	2396 KB	Output is correct
19	Correct	1 ms	2396 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct

Subtask #6
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	1 ms	2396 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	0 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2392 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	0 ms	2396 KB	Output is correct
19	Correct	1 ms	2396 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct
22	Correct	1 ms	2396 KB	Output is correct
23	Correct	1 ms	2396 KB	Output is correct
24	Correct	1 ms	2532 KB	Output is correct
25	Correct	1 ms	2396 KB	Output is correct
26	Correct	1 ms	2396 KB	Output is correct
27	Correct	1 ms	2396 KB	Output is correct
28	Correct	1 ms	2392 KB	Output is correct
29	Correct	1 ms	2396 KB	Output is correct
30	Correct	1 ms	2396 KB	Output is correct

Subtask #7
29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	44 ms	7260 KB	Output is correct
2	Correct	52 ms	7512 KB	Output is correct
3	Correct	46 ms	7272 KB	Output is correct
4	Correct	46 ms	7260 KB	Output is correct
5	Correct	48 ms	7248 KB	Output is correct
6	Correct	44 ms	7380 KB	Output is correct
7	Correct	48 ms	7380 KB	Output is correct
8	Correct	48 ms	7260 KB	Output is correct
9	Correct	52 ms	7256 KB	Output is correct
10	Correct	46 ms	7488 KB	Output is correct
11	Correct	42 ms	7256 KB	Output is correct
12	Correct	40 ms	8540 KB	Output is correct
13	Correct	39 ms	8540 KB	Output is correct
14	Correct	39 ms	8572 KB	Output is correct
15	Correct	44 ms	10064 KB	Output is correct
16	Correct	38 ms	8536 KB	Output is correct
17	Correct	40 ms	8540 KB	Output is correct
18	Correct	46 ms	10324 KB	Output is correct
19	Correct	44 ms	10076 KB	Output is correct
20	Correct	39 ms	8540 KB	Output is correct
21	Correct	67 ms	7456 KB	Output is correct
22	Correct	64 ms	10376 KB	Output is correct
23	Correct	63 ms	10468 KB	Output is correct
24	Correct	62 ms	10324 KB	Output is correct
25	Correct	65 ms	10320 KB	Output is correct
26	Correct	71 ms	10504 KB	Output is correct
27	Correct	64 ms	10324 KB	Output is correct
28	Correct	62 ms	10320 KB	Output is correct
29	Correct	62 ms	10544 KB	Output is correct
30	Correct	70 ms	10332 KB	Output is correct
31	Correct	1 ms	2396 KB	Output is correct
32	Correct	1 ms	2396 KB	Output is correct
33	Correct	1 ms	2396 KB	Output is correct
34	Correct	0 ms	2396 KB	Output is correct
35	Correct	1 ms	2396 KB	Output is correct
36	Correct	1 ms	2396 KB	Output is correct
37	Correct	1 ms	2396 KB	Output is correct
38	Correct	1 ms	2396 KB	Output is correct
39	Correct	1 ms	2396 KB	Output is correct
40	Correct	1 ms	2392 KB	Output is correct
41	Correct	1 ms	2396 KB	Output is correct
42	Correct	1 ms	2396 KB	Output is correct
43	Correct	1 ms	2396 KB	Output is correct
44	Correct	1 ms	2396 KB	Output is correct
45	Correct	1 ms	2396 KB	Output is correct
46	Correct	1 ms	2396 KB	Output is correct
47	Correct	1 ms	2396 KB	Output is correct
48	Correct	0 ms	2396 KB	Output is correct
49	Correct	1 ms	2396 KB	Output is correct
50	Correct	1 ms	2396 KB	Output is correct
51	Correct	1 ms	2396 KB	Output is correct
52	Correct	1 ms	2396 KB	Output is correct
53	Correct	1 ms	2396 KB	Output is correct
54	Correct	1 ms	2532 KB	Output is correct
55	Correct	1 ms	2396 KB	Output is correct
56	Correct	1 ms	2396 KB	Output is correct
57	Correct	1 ms	2396 KB	Output is correct
58	Correct	1 ms	2392 KB	Output is correct
59	Correct	1 ms	2396 KB	Output is correct
60	Correct	1 ms	2396 KB	Output is correct
61	Correct	94 ms	10332 KB	Output is correct
62	Correct	94 ms	10324 KB	Output is correct
63	Correct	75 ms	10320 KB	Output is correct
64	Correct	94 ms	10320 KB	Output is correct
65	Correct	96 ms	10320 KB	Output is correct
66	Correct	97 ms	10324 KB	Output is correct
67	Correct	103 ms	10568 KB	Output is correct
68	Correct	64 ms	10504 KB	Output is correct
69	Correct	62 ms	10324 KB	Output is correct
70	Correct	65 ms	10320 KB	Output is correct

답안 #897777

Compilation message

Subtask #1 4.0 / 4.0

Subtask #2 8.0 / 8.0

Subtask #3 18.0 / 18.0

Subtask #4 10.0 / 10.0

Subtask #5 11.0 / 11.0

Subtask #6 20.0 / 20.0

Subtask #7 29.0 / 29.0

Subtask #1
4.0 / 4.0

Subtask #2
8.0 / 8.0

Subtask #3
18.0 / 18.0

Subtask #4
10.0 / 10.0

Subtask #5
11.0 / 11.0

Subtask #6
20.0 / 20.0

Subtask #7
29.0 / 29.0