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Submission #520620

# Submission time Handle Problem Language Result Execution time Memory
520620 2022-01-30T10:53:51 Z Vimmer Cigle (COI21_cigle) C++14
48 / 100
 1000 ms 218388 KB 
#include <bits/stdc++.h>
#define in(x) freopen(x, "r", stdin)
#define out(x) freopen(x, "w", stdout)

#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("-O3")

#define F first
#define S second
#define PB push_back
#define M ll(1e9 + 7)
#define sz(x) (ll)x.size()
#define N 1000500
#define pri(x) cout << x << endl
#define endl '\n'
#define all(x) (x).begin(), (x).end()
#define _ << " " <<

using namespace std;
//typedef tree <ll, null_type, less_equal <ll> , rb_tree_tag, tree_order_statistics_node_update> ordered_set;
//using namespace __gnu_pbds;
typedef long long ll;
typedef long double ld;
typedef short int si;
typedef unsigned long long ull;

si f[5001][5001][2];

vector <int> was[5001];

int pr[5001];

si now[5001][5001][2];

int main()
{
    istream::sync_with_stdio(0); ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    memset(f, -1, sizeof f);

    int n;

    cin >> n;

    int a[n];

    si ans = 0;

    for (int i = 0; i < n; i++)
        cin >> a[i];

    for (int i = 0; i < n; i++)
    {
        pr[i] = a[i];

        if (i)
            pr[i] += pr[i - 1];
    }

    for (int l = 0; l < n; l++)
        {
            int sum = 0;

            for (int r = l; r < n; r++)
            {
                sum += a[r];

                int L = r + 1, R = n - 1;

                while (L < R)
                {
                    int md = (L + R) >> 1;

                    if (pr[md] - pr[r] >= sum)
                        R = md;
                            else L = md + 1;
                }

                if (pr[L] - pr[r] == sum)
                    {
                        was[r].PB(L);
                    }
            }
        }

    for (int i = 0; i < n; i++)
        sort(all(was[i]));

    memset(now, -1, sizeof now);

    for (int i = 0; i < n; i++)
        f[0][i][0] = 0;

    for (int r = 0; r < n; r++)
        for (int l = 0; l <= r; l++)
                for (int t = 0; t < 2; t++)
                {
                    if (r)
                        now[l][r][t] = max(now[l][r][t], now[l][r - 1][t]);

                    f[l][r][t] = max(f[l][r][t], now[l][r][t]);

                    ans = max(ans, f[l][r][t]);

                    if (f[l][r][t] != -1)
                        {
                            si kl = f[l][r][t];

                            int sm = pr[r], cur = 0;

                            if (l)
                                sm -= pr[l - 1];

                            for (auto nw : was[r])
                            {
                                cur = pr[nw] - pr[r];

                                if (cur >= sm)
                                {
                                    now[r + 1][nw][t ^ 1] = max(now[r + 1][nw][t ^ 1], si(kl));

                                    break;
                                }
                                else
                                {
                                    if (nw != n - 1)
                                        {
                                            kl++;

                                            now[r + 1][nw + 1][t ^ 1] = max(now[r + 1][nw + 1][t ^ 1], si(kl));
                                        }

                                    ans = max(ans, kl);
                                }
                            }
                        }
                }

    pri(ans);
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 196088 KB Output is correct
2 Correct 68 ms 196168 KB Output is correct
3 Correct 70 ms 196092 KB Output is correct
4 Correct 69 ms 196164 KB Output is correct
5 Correct 71 ms 196160 KB Output is correct
6 Correct 70 ms 196120 KB Output is correct
7 Correct 72 ms 196108 KB Output is correct
8 Correct 69 ms 196144 KB Output is correct
9 Correct 70 ms 196164 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 196088 KB Output is correct
2 Correct 68 ms 196168 KB Output is correct
3 Correct 70 ms 196092 KB Output is correct
4 Correct 69 ms 196164 KB Output is correct
5 Correct 71 ms 196160 KB Output is correct
6 Correct 70 ms 196120 KB Output is correct
7 Correct 72 ms 196108 KB Output is correct
8 Correct 69 ms 196144 KB Output is correct
9 Correct 70 ms 196164 KB Output is correct
10 Correct 72 ms 196068 KB Output is correct
11 Correct 71 ms 196152 KB Output is correct
12 Correct 70 ms 196164 KB Output is correct
13 Correct 72 ms 196144 KB Output is correct
14 Correct 69 ms 196096 KB Output is correct
15 Correct 69 ms 196160 KB Output is correct
16 Correct 70 ms 196164 KB Output is correct
17 Correct 71 ms 196184 KB Output is correct
18 Correct 75 ms 196180 KB Output is correct
19 Correct 70 ms 196180 KB Output is correct
20 Correct 71 ms 196164 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 125 ms 196336 KB Output is correct
2 Correct 152 ms 196468 KB Output is correct
3 Correct 132 ms 196368 KB Output is correct
4 Correct 147 ms 196352 KB Output is correct
5 Correct 144 ms 196420 KB Output is correct
6 Correct 142 ms 196420 KB Output is correct
7 Correct 146 ms 196436 KB Output is correct
8 Correct 138 ms 196420 KB Output is correct
9 Correct 138 ms 196440 KB Output is correct
10 Correct 141 ms 196508 KB Output is correct
11 Correct 132 ms 196372 KB Output is correct
12 Correct 140 ms 196404 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 196088 KB Output is correct
2 Correct 68 ms 196168 KB Output is correct
3 Correct 70 ms 196092 KB Output is correct
4 Correct 69 ms 196164 KB Output is correct
5 Correct 71 ms 196160 KB Output is correct
6 Correct 70 ms 196120 KB Output is correct
7 Correct 72 ms 196108 KB Output is correct
8 Correct 69 ms 196144 KB Output is correct
9 Correct 70 ms 196164 KB Output is correct
10 Correct 72 ms 196068 KB Output is correct
11 Correct 71 ms 196152 KB Output is correct
12 Correct 70 ms 196164 KB Output is correct
13 Correct 72 ms 196144 KB Output is correct
14 Correct 69 ms 196096 KB Output is correct
15 Correct 69 ms 196160 KB Output is correct
16 Correct 70 ms 196164 KB Output is correct
17 Correct 71 ms 196184 KB Output is correct
18 Correct 75 ms 196180 KB Output is correct
19 Correct 70 ms 196180 KB Output is correct
20 Correct 71 ms 196164 KB Output is correct
21 Correct 125 ms 196336 KB Output is correct
22 Correct 152 ms 196468 KB Output is correct
23 Correct 132 ms 196368 KB Output is correct
24 Correct 147 ms 196352 KB Output is correct
25 Correct 144 ms 196420 KB Output is correct
26 Correct 142 ms 196420 KB Output is correct
27 Correct 146 ms 196436 KB Output is correct
28 Correct 138 ms 196420 KB Output is correct
29 Correct 138 ms 196440 KB Output is correct
30 Correct 141 ms 196508 KB Output is correct
31 Correct 132 ms 196372 KB Output is correct
32 Correct 140 ms 196404 KB Output is correct
33 Correct 125 ms 196292 KB Output is correct
34 Correct 137 ms 196404 KB Output is correct
35 Correct 141 ms 196416 KB Output is correct
36 Correct 153 ms 196344 KB Output is correct
37 Correct 140 ms 196380 KB Output is correct
38 Correct 143 ms 196532 KB Output is correct
39 Correct 97 ms 196248 KB Output is correct
40 Correct 74 ms 196184 KB Output is correct
41 Correct 76 ms 196168 KB Output is correct
42 Correct 77 ms 196192 KB Output is correct
43 Correct 78 ms 196104 KB Output is correct
44 Correct 82 ms 196104 KB Output is correct
45 Correct 77 ms 196156 KB Output is correct
46 Correct 77 ms 196068 KB Output is correct
47 Correct 85 ms 196172 KB Output is correct
48 Correct 76 ms 196156 KB Output is correct
49 Correct 77 ms 196092 KB Output is correct

Subtask #5
0 / 52.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 196088 KB Output is correct
2 Correct 68 ms 196168 KB Output is correct
3 Correct 70 ms 196092 KB Output is correct
4 Correct 69 ms 196164 KB Output is correct
5 Correct 71 ms 196160 KB Output is correct
6 Correct 70 ms 196120 KB Output is correct
7 Correct 72 ms 196108 KB Output is correct
8 Correct 69 ms 196144 KB Output is correct
9 Correct 70 ms 196164 KB Output is correct
10 Correct 72 ms 196068 KB Output is correct
11 Correct 71 ms 196152 KB Output is correct
12 Correct 70 ms 196164 KB Output is correct
13 Correct 72 ms 196144 KB Output is correct
14 Correct 69 ms 196096 KB Output is correct
15 Correct 69 ms 196160 KB Output is correct
16 Correct 70 ms 196164 KB Output is correct
17 Correct 71 ms 196184 KB Output is correct
18 Correct 75 ms 196180 KB Output is correct
19 Correct 70 ms 196180 KB Output is correct
20 Correct 71 ms 196164 KB Output is correct
21 Correct 125 ms 196336 KB Output is correct
22 Correct 152 ms 196468 KB Output is correct
23 Correct 132 ms 196368 KB Output is correct
24 Correct 147 ms 196352 KB Output is correct
25 Correct 144 ms 196420 KB Output is correct
26 Correct 142 ms 196420 KB Output is correct
27 Correct 146 ms 196436 KB Output is correct
28 Correct 138 ms 196420 KB Output is correct
29 Correct 138 ms 196440 KB Output is correct
30 Correct 141 ms 196508 KB Output is correct
31 Correct 132 ms 196372 KB Output is correct
32 Correct 140 ms 196404 KB Output is correct
33 Correct 125 ms 196292 KB Output is correct
34 Correct 137 ms 196404 KB Output is correct
35 Correct 141 ms 196416 KB Output is correct
36 Correct 153 ms 196344 KB Output is correct
37 Correct 140 ms 196380 KB Output is correct
38 Correct 143 ms 196532 KB Output is correct
39 Correct 97 ms 196248 KB Output is correct
40 Correct 74 ms 196184 KB Output is correct
41 Correct 76 ms 196168 KB Output is correct
42 Correct 77 ms 196192 KB Output is correct
43 Correct 78 ms 196104 KB Output is correct
44 Correct 82 ms 196104 KB Output is correct
45 Correct 77 ms 196156 KB Output is correct
46 Correct 77 ms 196068 KB Output is correct
47 Correct 85 ms 196172 KB Output is correct
48 Correct 76 ms 196156 KB Output is correct
49 Correct 77 ms 196092 KB Output is correct
50 Execution timed out 1090 ms 218388 KB Time limit exceeded
51 Halted 0 ms 0 KB -