oj.uz

Submission #674618

# Submission time Handle Problem Language Result Execution time Memory
674618 2022-12-25T12:24:42 Z stevancv Feast (NOI19_feast) C++14
100 / 100
 239 ms 13940 KB 
#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define sp ' '
#define en '\n'
#define smin(a, b) a = min(a, b)
#define smax(a, b) a = max(a, b)
using namespace std;
const int N = 3e5 + 2;
const int mod = 1e9 + 7;
ll a[N];
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int n, m;
    cin >> n >> m;
    for (int i = 1; i <= n; i++) {
        cin >> a[i];
        a[i] += a[i - 1];
    }
    auto Can = [&] (ll penalty) {
        vector<ll> dp(n + 1);
        vector<int> cnt(n + 1);
        vector<pair<ll, int>> p(n + 1);
        p[0] = {0, 0};
        for (int i = 1; i <= n; i++) {
            dp[i] = dp[i - 1];
            cnt[i] = cnt[i - 1];
            p[i] = p[i - 1];
            if (-a[i] > p[i].first) p[i] = {-a[i], i};
            if (dp[i] < p[i].first + penalty + a[i]) {
                dp[i] = p[i].first + penalty + a[i];
                cnt[i] = cnt[p[i].second] + 1;
            }
            if (dp[i] - a[i] > p[i].first) p[i] = {dp[i] - a[i], i};
        }
        if (cnt[n] > m) return (ll)-1e18;
        return dp[n] - (ll) cnt[n] * penalty;
    };
    ll l = -1e18, r = 0, ans = 0;
    while (l <= r) {
        ll penalty = l + r >> 1;
        if (Can(penalty) != -1e18) {
            ans = penalty;
            l = penalty + 1;
        }
        else r = penalty - 1;
    }
    ll o = Can(ans);
    if (o < 0) o = 0;
    cout << o << en;
    return 0;
}

Compilation message

feast.cpp: In function 'int main()':
feast.cpp:43:24: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   43 |         ll penalty = l + r >> 1;
      |                      ~~^~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 133 ms 13340 KB Output is correct
2 Correct 149 ms 13600 KB Output is correct
3 Correct 141 ms 13760 KB Output is correct
4 Correct 140 ms 13680 KB Output is correct
5 Correct 133 ms 13616 KB Output is correct
6 Correct 135 ms 13368 KB Output is correct
7 Correct 125 ms 13356 KB Output is correct
8 Correct 158 ms 13628 KB Output is correct
9 Correct 133 ms 13396 KB Output is correct
10 Correct 120 ms 13500 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 129 ms 11732 KB Output is correct
2 Correct 130 ms 11992 KB Output is correct
3 Correct 116 ms 11716 KB Output is correct
4 Correct 111 ms 11820 KB Output is correct
5 Correct 124 ms 13360 KB Output is correct
6 Correct 113 ms 11708 KB Output is correct
7 Correct 132 ms 11980 KB Output is correct
8 Correct 123 ms 13700 KB Output is correct
9 Correct 115 ms 13328 KB Output is correct
10 Correct 138 ms 11956 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 143 ms 13784 KB Output is correct
2 Correct 140 ms 13736 KB Output is correct
3 Correct 149 ms 13752 KB Output is correct
4 Correct 143 ms 13632 KB Output is correct
5 Correct 140 ms 13736 KB Output is correct
6 Correct 146 ms 13824 KB Output is correct
7 Correct 180 ms 13876 KB Output is correct
8 Correct 148 ms 13740 KB Output is correct
9 Correct 147 ms 13940 KB Output is correct
10 Correct 168 ms 13792 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 328 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 324 KB Output is correct

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 328 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 324 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 212 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 328 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 328 KB Output is correct
20 Correct 1 ms 212 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 328 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 324 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 212 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 328 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 328 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 2 ms 416 KB Output is correct
22 Correct 2 ms 340 KB Output is correct
23 Correct 2 ms 340 KB Output is correct
24 Correct 2 ms 340 KB Output is correct
25 Correct 3 ms 340 KB Output is correct
26 Correct 2 ms 340 KB Output is correct
27 Correct 2 ms 340 KB Output is correct
28 Correct 2 ms 352 KB Output is correct
29 Correct 2 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct

Subtask #7
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 133 ms 13340 KB Output is correct
2 Correct 149 ms 13600 KB Output is correct
3 Correct 141 ms 13760 KB Output is correct
4 Correct 140 ms 13680 KB Output is correct
5 Correct 133 ms 13616 KB Output is correct
6 Correct 135 ms 13368 KB Output is correct
7 Correct 125 ms 13356 KB Output is correct
8 Correct 158 ms 13628 KB Output is correct
9 Correct 133 ms 13396 KB Output is correct
10 Correct 120 ms 13500 KB Output is correct
11 Correct 129 ms 11732 KB Output is correct
12 Correct 130 ms 11992 KB Output is correct
13 Correct 116 ms 11716 KB Output is correct
14 Correct 111 ms 11820 KB Output is correct
15 Correct 124 ms 13360 KB Output is correct
16 Correct 113 ms 11708 KB Output is correct
17 Correct 132 ms 11980 KB Output is correct
18 Correct 123 ms 13700 KB Output is correct
19 Correct 115 ms 13328 KB Output is correct
20 Correct 138 ms 11956 KB Output is correct
21 Correct 143 ms 13784 KB Output is correct
22 Correct 140 ms 13736 KB Output is correct
23 Correct 149 ms 13752 KB Output is correct
24 Correct 143 ms 13632 KB Output is correct
25 Correct 140 ms 13736 KB Output is correct
26 Correct 146 ms 13824 KB Output is correct
27 Correct 180 ms 13876 KB Output is correct
28 Correct 148 ms 13740 KB Output is correct
29 Correct 147 ms 13940 KB Output is correct
30 Correct 168 ms 13792 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 1 ms 328 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 1 ms 212 KB Output is correct
38 Correct 1 ms 328 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 1 ms 324 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 212 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 1 ms 328 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 1 ms 328 KB Output is correct
50 Correct 1 ms 212 KB Output is correct
51 Correct 2 ms 416 KB Output is correct
52 Correct 2 ms 340 KB Output is correct
53 Correct 2 ms 340 KB Output is correct
54 Correct 2 ms 340 KB Output is correct
55 Correct 3 ms 340 KB Output is correct
56 Correct 2 ms 340 KB Output is correct
57 Correct 2 ms 340 KB Output is correct
58 Correct 2 ms 352 KB Output is correct
59 Correct 2 ms 340 KB Output is correct
60 Correct 1 ms 340 KB Output is correct
61 Correct 207 ms 13604 KB Output is correct
62 Correct 239 ms 13940 KB Output is correct
63 Correct 179 ms 13556 KB Output is correct
64 Correct 208 ms 13828 KB Output is correct
65 Correct 215 ms 13816 KB Output is correct
66 Correct 217 ms 13780 KB Output is correct
67 Correct 213 ms 13580 KB Output is correct
68 Correct 167 ms 13788 KB Output is correct
69 Correct 179 ms 13572 KB Output is correct
70 Correct 158 ms 13484 KB Output is correct