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답안 #791755

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
791755 2023-07-24T09:36:18 Z vjudge1 Feast (NOI19_feast) C++17
100 / 100
 119 ms 8532 KB 
/*
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("arch=skylake")
*/

#include <bits/stdc++.h>
#define taskname ""
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define ll long long
#define ld long double
#define pb push_back
#define ff first
#define ss second
#define pii pair<int, int>
#define vi vector<int>
#define vll vector<ll>
#define vii vector<pii>
#define isz(x) (int)x.size()
using namespace std;

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

int n, k, a[mxN];
ll pref[mxN], ans;
pair<ll, int> dp[mxN];

ll calc(int l, int r) {
    if(l > r) return 0;
    return pref[r] - pref[l - 1];
}

void solve() {
    cin >> n >> k;
    for(int i = 1; i <= n; ++i) {
        cin >> a[i];
        pref[i] = pref[i - 1] + a[i];
    }
    ll l = -oo / n, r = 0;
    while(l < r) {
        ll mid = (l + r + 1) >> 1;
        pair<ll, int> maxx = {0, 0}, doesntexist = {0, 0};
        for(int i = 1; i <= n; ++i) {
            ll tmp = maxx.ff + pref[i] + mid;

            if(dp[i - 1].ff == tmp) dp[i] = min(dp[i - 1], pair{tmp, maxx.ss + 1});
            else dp[i] = max(dp[i - 1], pair{tmp, maxx.ss + 1});

            if(maxx.ff == dp[i].ff - pref[i]) maxx = min(maxx, pair{dp[i].ff - pref[i], dp[i].ss});
            else maxx = max(maxx, pair{dp[i].ff - pref[i], dp[i].ss});

            if(dp[i].ff == doesntexist.ff) doesntexist = min(doesntexist, dp[i]);
            else doesntexist = max(doesntexist, dp[i]);
        }
        if(doesntexist.ss <= k) l = mid;
        else r = mid - 1;
    }

    pair<ll, int> maxx = {0, 0}, doesntexist = {0, 0};
    for(int i = 1; i <= n; ++i) {
        ll tmp = maxx.ff + pref[i] + l;

        if(dp[i - 1].ff == tmp) dp[i] = min(dp[i - 1], pair{tmp, maxx.ss + 1});
        else dp[i] = max(dp[i - 1], pair{tmp, maxx.ss + 1});

        if(maxx.ff == dp[i].ff - pref[i]) maxx = min(maxx, pair{dp[i].ff - pref[i], dp[i].ss});
        else maxx = max(maxx, pair{dp[i].ff - pref[i], dp[i].ss});

        if(dp[i].ff == doesntexist.ff) doesntexist = min(doesntexist, dp[i]);
        else doesntexist = max(doesntexist, dp[i]);
    }

    cout << doesntexist.ff - doesntexist.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;
#endif

}

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 71 ms 8276 KB Output is correct
2 Correct 76 ms 8428 KB Output is correct
3 Correct 74 ms 8472 KB Output is correct
4 Correct 72 ms 8352 KB Output is correct
5 Correct 74 ms 8392 KB Output is correct
6 Correct 75 ms 8280 KB Output is correct
7 Correct 81 ms 8264 KB Output is correct
8 Correct 77 ms 8324 KB Output is correct
9 Correct 72 ms 8288 KB Output is correct
10 Correct 76 ms 8380 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 60 ms 8284 KB Output is correct
2 Correct 66 ms 8504 KB Output is correct
3 Correct 74 ms 8320 KB Output is correct
4 Correct 66 ms 8388 KB Output is correct
5 Correct 71 ms 8288 KB Output is correct
6 Correct 69 ms 8268 KB Output is correct
7 Correct 75 ms 8532 KB Output is correct
8 Correct 73 ms 8480 KB Output is correct
9 Correct 75 ms 8256 KB Output is correct
10 Correct 68 ms 8472 KB Output is correct

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 71 ms 8404 KB Output is correct
2 Correct 90 ms 8316 KB Output is correct
3 Correct 90 ms 8332 KB Output is correct
4 Correct 80 ms 8344 KB Output is correct
5 Correct 92 ms 8408 KB Output is correct
6 Correct 72 ms 8460 KB Output is correct
7 Correct 80 ms 8404 KB Output is correct
8 Correct 81 ms 8296 KB Output is correct
9 Correct 70 ms 8508 KB Output is correct
10 Correct 73 ms 8500 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 388 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct

Subtask #5
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 388 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct

Subtask #6
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 388 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct

Subtask #7
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 71 ms 8276 KB Output is correct
2 Correct 76 ms 8428 KB Output is correct
3 Correct 74 ms 8472 KB Output is correct
4 Correct 72 ms 8352 KB Output is correct
5 Correct 74 ms 8392 KB Output is correct
6 Correct 75 ms 8280 KB Output is correct
7 Correct 81 ms 8264 KB Output is correct
8 Correct 77 ms 8324 KB Output is correct
9 Correct 72 ms 8288 KB Output is correct
10 Correct 76 ms 8380 KB Output is correct
11 Correct 60 ms 8284 KB Output is correct
12 Correct 66 ms 8504 KB Output is correct
13 Correct 74 ms 8320 KB Output is correct
14 Correct 66 ms 8388 KB Output is correct
15 Correct 71 ms 8288 KB Output is correct
16 Correct 69 ms 8268 KB Output is correct
17 Correct 75 ms 8532 KB Output is correct
18 Correct 73 ms 8480 KB Output is correct
19 Correct 75 ms 8256 KB Output is correct
20 Correct 68 ms 8472 KB Output is correct
21 Correct 71 ms 8404 KB Output is correct
22 Correct 90 ms 8316 KB Output is correct
23 Correct 90 ms 8332 KB Output is correct
24 Correct 80 ms 8344 KB Output is correct
25 Correct 92 ms 8408 KB Output is correct
26 Correct 72 ms 8460 KB Output is correct
27 Correct 80 ms 8404 KB Output is correct
28 Correct 81 ms 8296 KB Output is correct
29 Correct 70 ms 8508 KB Output is correct
30 Correct 73 ms 8500 KB Output is correct
31 Correct 0 ms 388 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 0 ms 340 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 1 ms 340 KB Output is correct
50 Correct 0 ms 340 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 340 KB Output is correct
53 Correct 1 ms 340 KB Output is correct
54 Correct 1 ms 340 KB Output is correct
55 Correct 1 ms 340 KB Output is correct
56 Correct 1 ms 340 KB Output is correct
57 Correct 1 ms 340 KB Output is correct
58 Correct 1 ms 340 KB Output is correct
59 Correct 1 ms 340 KB Output is correct
60 Correct 1 ms 340 KB Output is correct
61 Correct 108 ms 8320 KB Output is correct
62 Correct 119 ms 8516 KB Output is correct
63 Correct 86 ms 8300 KB Output is correct
64 Correct 100 ms 8352 KB Output is correct
65 Correct 89 ms 8364 KB Output is correct
66 Correct 109 ms 8432 KB Output is correct
67 Correct 88 ms 8308 KB Output is correct
68 Correct 73 ms 8464 KB Output is correct
69 Correct 85 ms 8312 KB Output is correct
70 Correct 70 ms 8264 KB Output is correct