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Submission #329203

# Submission time Handle Problem Language Result Execution time Memory
329203 2020-11-19T18:05:45 Z Mahdi_Shokoufi Feast (NOI19_feast) C++17
71 / 100
 50 ms 61164 KB 
//In The Name of Allah
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair < int , int > pii;
typedef pair < ll , ll > pll;

#define X first
#define Y second
#define mp make_pair
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x.size())

const int N = 3e5 + 10;
const int M = 2010;
const ll mod = 1e9 + 7;
const int inf = 1e9 + 10;

ll a[N], dp[2][M][M];

int main(){
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    ll n, k, mn = inf, cn = 0, sum = 0;
    cin >> n >> k;
    for (int i = 1; i <= n; i ++){
        cin >> a[i];
        mn = min(mn, a[i]);
        cn += a[i] < 0;
        sum += a[i];
    }
    if (0 <= mn)
        return cout << sum, 0;
    if (cn == 1){
        ll pre = 0, suf = 0;
        for (int i = 1; i <= n && 0 <= a[i]; i ++)
            pre += a[i];
        for (int i = n; i >= 1 && 0 <= a[i]; i --)
            suf += a[i];
        if (2 <= k)
            return cout << sum - mn, 0;
        return cout << max({sum, pre, suf}), 0;
    }
    if (k == 1){
        ll ans = 0, cur = 0;
        for (int i = 1; i <= n; i ++){
            cur = max(0LL, cur + a[i]);
            ans = max(ans, cur);
        }
        return cout << ans, 0;
    }
    if (n <= 2000 && k <= 2000){
        for (int i = 1; i <= n; i ++){
            for (int j = 1; j <= k; j ++){
                dp[0][i][j] = a[i] + max(dp[0][i - 1][j], dp[1][i - 1][j - 1]);
                dp[1][i][j] = max(dp[1][i - 1][j], dp[0][i][j]);
            }
        }
        return cout << dp[1][n][k], 0;
    }
    return 0;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 5484 KB Output is correct
2 Correct 35 ms 5484 KB Output is correct
3 Correct 37 ms 5612 KB Output is correct
4 Correct 35 ms 5612 KB Output is correct
5 Correct 38 ms 5740 KB Output is correct
6 Correct 35 ms 5484 KB Output is correct
7 Correct 33 ms 5484 KB Output is correct
8 Correct 35 ms 5484 KB Output is correct
9 Correct 34 ms 5484 KB Output is correct
10 Correct 38 ms 5612 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 3820 KB Output is correct
2 Correct 24 ms 3820 KB Output is correct
3 Correct 23 ms 3692 KB Output is correct
4 Correct 23 ms 3820 KB Output is correct
5 Correct 34 ms 5484 KB Output is correct
6 Correct 23 ms 3820 KB Output is correct
7 Correct 24 ms 3948 KB Output is correct
8 Correct 37 ms 5612 KB Output is correct
9 Correct 35 ms 5356 KB Output is correct
10 Correct 23 ms 3820 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 5740 KB Output is correct
2 Correct 37 ms 5612 KB Output is correct
3 Correct 45 ms 5740 KB Output is correct
4 Correct 41 ms 5612 KB Output is correct
5 Correct 39 ms 5740 KB Output is correct
6 Correct 39 ms 5740 KB Output is correct
7 Correct 40 ms 5740 KB Output is correct
8 Correct 50 ms 5740 KB Output is correct
9 Correct 39 ms 5740 KB Output is correct
10 Correct 39 ms 5740 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 1004 KB Output is correct
3 Correct 1 ms 1004 KB Output is correct
4 Correct 1 ms 1004 KB Output is correct
5 Correct 2 ms 1004 KB Output is correct
6 Correct 1 ms 1004 KB Output is correct
7 Correct 1 ms 1004 KB Output is correct
8 Correct 1 ms 1004 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 1004 KB Output is correct

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 1004 KB Output is correct
3 Correct 1 ms 1004 KB Output is correct
4 Correct 1 ms 1004 KB Output is correct
5 Correct 2 ms 1004 KB Output is correct
6 Correct 1 ms 1004 KB Output is correct
7 Correct 1 ms 1004 KB Output is correct
8 Correct 1 ms 1004 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 1004 KB Output is correct
11 Correct 2 ms 2924 KB Output is correct
12 Correct 2 ms 2668 KB Output is correct
13 Correct 2 ms 2540 KB Output is correct
14 Correct 2 ms 2796 KB Output is correct
15 Correct 2 ms 2668 KB Output is correct
16 Correct 2 ms 2540 KB Output is correct
17 Correct 2 ms 2796 KB Output is correct
18 Correct 2 ms 2540 KB Output is correct
19 Correct 2 ms 2540 KB Output is correct
20 Correct 2 ms 2796 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 1004 KB Output is correct
3 Correct 1 ms 1004 KB Output is correct
4 Correct 1 ms 1004 KB Output is correct
5 Correct 2 ms 1004 KB Output is correct
6 Correct 1 ms 1004 KB Output is correct
7 Correct 1 ms 1004 KB Output is correct
8 Correct 1 ms 1004 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 1004 KB Output is correct
11 Correct 2 ms 2924 KB Output is correct
12 Correct 2 ms 2668 KB Output is correct
13 Correct 2 ms 2540 KB Output is correct
14 Correct 2 ms 2796 KB Output is correct
15 Correct 2 ms 2668 KB Output is correct
16 Correct 2 ms 2540 KB Output is correct
17 Correct 2 ms 2796 KB Output is correct
18 Correct 2 ms 2540 KB Output is correct
19 Correct 2 ms 2540 KB Output is correct
20 Correct 2 ms 2796 KB Output is correct
21 Correct 12 ms 22124 KB Output is correct
22 Correct 35 ms 61164 KB Output is correct
23 Correct 15 ms 27756 KB Output is correct
24 Correct 12 ms 22636 KB Output is correct
25 Correct 16 ms 25708 KB Output is correct
26 Correct 12 ms 21868 KB Output is correct
27 Correct 16 ms 25068 KB Output is correct
28 Correct 9 ms 17388 KB Output is correct
29 Correct 9 ms 17132 KB Output is correct
30 Correct 10 ms 16108 KB Output is correct

Subtask #7
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 5484 KB Output is correct
2 Correct 35 ms 5484 KB Output is correct
3 Correct 37 ms 5612 KB Output is correct
4 Correct 35 ms 5612 KB Output is correct
5 Correct 38 ms 5740 KB Output is correct
6 Correct 35 ms 5484 KB Output is correct
7 Correct 33 ms 5484 KB Output is correct
8 Correct 35 ms 5484 KB Output is correct
9 Correct 34 ms 5484 KB Output is correct
10 Correct 38 ms 5612 KB Output is correct
11 Correct 25 ms 3820 KB Output is correct
12 Correct 24 ms 3820 KB Output is correct
13 Correct 23 ms 3692 KB Output is correct
14 Correct 23 ms 3820 KB Output is correct
15 Correct 34 ms 5484 KB Output is correct
16 Correct 23 ms 3820 KB Output is correct
17 Correct 24 ms 3948 KB Output is correct
18 Correct 37 ms 5612 KB Output is correct
19 Correct 35 ms 5356 KB Output is correct
20 Correct 23 ms 3820 KB Output is correct
21 Correct 38 ms 5740 KB Output is correct
22 Correct 37 ms 5612 KB Output is correct
23 Correct 45 ms 5740 KB Output is correct
24 Correct 41 ms 5612 KB Output is correct
25 Correct 39 ms 5740 KB Output is correct
26 Correct 39 ms 5740 KB Output is correct
27 Correct 40 ms 5740 KB Output is correct
28 Correct 50 ms 5740 KB Output is correct
29 Correct 39 ms 5740 KB Output is correct
30 Correct 39 ms 5740 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 1004 KB Output is correct
33 Correct 1 ms 1004 KB Output is correct
34 Correct 1 ms 1004 KB Output is correct
35 Correct 2 ms 1004 KB Output is correct
36 Correct 1 ms 1004 KB Output is correct
37 Correct 1 ms 1004 KB Output is correct
38 Correct 1 ms 1004 KB Output is correct
39 Correct 1 ms 364 KB Output is correct
40 Correct 1 ms 1004 KB Output is correct
41 Correct 2 ms 2924 KB Output is correct
42 Correct 2 ms 2668 KB Output is correct
43 Correct 2 ms 2540 KB Output is correct
44 Correct 2 ms 2796 KB Output is correct
45 Correct 2 ms 2668 KB Output is correct
46 Correct 2 ms 2540 KB Output is correct
47 Correct 2 ms 2796 KB Output is correct
48 Correct 2 ms 2540 KB Output is correct
49 Correct 2 ms 2540 KB Output is correct
50 Correct 2 ms 2796 KB Output is correct
51 Correct 12 ms 22124 KB Output is correct
52 Correct 35 ms 61164 KB Output is correct
53 Correct 15 ms 27756 KB Output is correct
54 Correct 12 ms 22636 KB Output is correct
55 Correct 16 ms 25708 KB Output is correct
56 Correct 12 ms 21868 KB Output is correct
57 Correct 16 ms 25068 KB Output is correct
58 Correct 9 ms 17388 KB Output is correct
59 Correct 9 ms 17132 KB Output is correct
60 Correct 10 ms 16108 KB Output is correct
61 Incorrect 37 ms 5612 KB Output isn't correct
62 Halted 0 ms 0 KB -