oj.uz

Submission #520621

# Submission time Handle Problem Language Result Execution time Memory
520621 2022-01-30T10:54:27 Z Vimmer Cigle (COI21_cigle) C++14
48 / 100
 1000 ms 218260 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]);

                    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 70 ms 196080 KB Output is correct
2 Correct 70 ms 196156 KB Output is correct
3 Correct 71 ms 196096 KB Output is correct
4 Correct 70 ms 196092 KB Output is correct
5 Correct 73 ms 196180 KB Output is correct
6 Correct 70 ms 196144 KB Output is correct
7 Correct 71 ms 196180 KB Output is correct
8 Correct 71 ms 196152 KB Output is correct
9 Correct 70 ms 196184 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 196080 KB Output is correct
2 Correct 70 ms 196156 KB Output is correct
3 Correct 71 ms 196096 KB Output is correct
4 Correct 70 ms 196092 KB Output is correct
5 Correct 73 ms 196180 KB Output is correct
6 Correct 70 ms 196144 KB Output is correct
7 Correct 71 ms 196180 KB Output is correct
8 Correct 71 ms 196152 KB Output is correct
9 Correct 70 ms 196184 KB Output is correct
10 Correct 72 ms 196092 KB Output is correct
11 Correct 71 ms 196160 KB Output is correct
12 Correct 71 ms 196160 KB Output is correct
13 Correct 74 ms 196128 KB Output is correct
14 Correct 72 ms 196160 KB Output is correct
15 Correct 71 ms 196184 KB Output is correct
16 Correct 76 ms 196164 KB Output is correct
17 Correct 70 ms 196060 KB Output is correct
18 Correct 70 ms 196076 KB Output is correct
19 Correct 72 ms 196100 KB Output is correct
20 Correct 70 ms 196184 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 127 ms 196340 KB Output is correct
2 Correct 156 ms 196544 KB Output is correct
3 Correct 134 ms 196400 KB Output is correct
4 Correct 140 ms 196364 KB Output is correct
5 Correct 141 ms 196400 KB Output is correct
6 Correct 148 ms 196456 KB Output is correct
7 Correct 141 ms 196420 KB Output is correct
8 Correct 140 ms 196420 KB Output is correct
9 Correct 140 ms 196368 KB Output is correct
10 Correct 141 ms 196420 KB Output is correct
11 Correct 132 ms 196360 KB Output is correct
12 Correct 140 ms 196292 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 196080 KB Output is correct
2 Correct 70 ms 196156 KB Output is correct
3 Correct 71 ms 196096 KB Output is correct
4 Correct 70 ms 196092 KB Output is correct
5 Correct 73 ms 196180 KB Output is correct
6 Correct 70 ms 196144 KB Output is correct
7 Correct 71 ms 196180 KB Output is correct
8 Correct 71 ms 196152 KB Output is correct
9 Correct 70 ms 196184 KB Output is correct
10 Correct 72 ms 196092 KB Output is correct
11 Correct 71 ms 196160 KB Output is correct
12 Correct 71 ms 196160 KB Output is correct
13 Correct 74 ms 196128 KB Output is correct
14 Correct 72 ms 196160 KB Output is correct
15 Correct 71 ms 196184 KB Output is correct
16 Correct 76 ms 196164 KB Output is correct
17 Correct 70 ms 196060 KB Output is correct
18 Correct 70 ms 196076 KB Output is correct
19 Correct 72 ms 196100 KB Output is correct
20 Correct 70 ms 196184 KB Output is correct
21 Correct 127 ms 196340 KB Output is correct
22 Correct 156 ms 196544 KB Output is correct
23 Correct 134 ms 196400 KB Output is correct
24 Correct 140 ms 196364 KB Output is correct
25 Correct 141 ms 196400 KB Output is correct
26 Correct 148 ms 196456 KB Output is correct
27 Correct 141 ms 196420 KB Output is correct
28 Correct 140 ms 196420 KB Output is correct
29 Correct 140 ms 196368 KB Output is correct
30 Correct 141 ms 196420 KB Output is correct
31 Correct 132 ms 196360 KB Output is correct
32 Correct 140 ms 196292 KB Output is correct
33 Correct 125 ms 196296 KB Output is correct
34 Correct 135 ms 196348 KB Output is correct
35 Correct 138 ms 196296 KB Output is correct
36 Correct 145 ms 196540 KB Output is correct
37 Correct 141 ms 196440 KB Output is correct
38 Correct 140 ms 196396 KB Output is correct
39 Correct 102 ms 196344 KB Output is correct
40 Correct 77 ms 196216 KB Output is correct
41 Correct 76 ms 196136 KB Output is correct
42 Correct 78 ms 196084 KB Output is correct
43 Correct 77 ms 196084 KB Output is correct
44 Correct 76 ms 196104 KB Output is correct
45 Correct 77 ms 196164 KB Output is correct
46 Correct 78 ms 196168 KB Output is correct
47 Correct 73 ms 196140 KB Output is correct
48 Correct 77 ms 196116 KB Output is correct
49 Correct 78 ms 196144 KB Output is correct

Subtask #5
0 / 52.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 196080 KB Output is correct
2 Correct 70 ms 196156 KB Output is correct
3 Correct 71 ms 196096 KB Output is correct
4 Correct 70 ms 196092 KB Output is correct
5 Correct 73 ms 196180 KB Output is correct
6 Correct 70 ms 196144 KB Output is correct
7 Correct 71 ms 196180 KB Output is correct
8 Correct 71 ms 196152 KB Output is correct
9 Correct 70 ms 196184 KB Output is correct
10 Correct 72 ms 196092 KB Output is correct
11 Correct 71 ms 196160 KB Output is correct
12 Correct 71 ms 196160 KB Output is correct
13 Correct 74 ms 196128 KB Output is correct
14 Correct 72 ms 196160 KB Output is correct
15 Correct 71 ms 196184 KB Output is correct
16 Correct 76 ms 196164 KB Output is correct
17 Correct 70 ms 196060 KB Output is correct
18 Correct 70 ms 196076 KB Output is correct
19 Correct 72 ms 196100 KB Output is correct
20 Correct 70 ms 196184 KB Output is correct
21 Correct 127 ms 196340 KB Output is correct
22 Correct 156 ms 196544 KB Output is correct
23 Correct 134 ms 196400 KB Output is correct
24 Correct 140 ms 196364 KB Output is correct
25 Correct 141 ms 196400 KB Output is correct
26 Correct 148 ms 196456 KB Output is correct
27 Correct 141 ms 196420 KB Output is correct
28 Correct 140 ms 196420 KB Output is correct
29 Correct 140 ms 196368 KB Output is correct
30 Correct 141 ms 196420 KB Output is correct
31 Correct 132 ms 196360 KB Output is correct
32 Correct 140 ms 196292 KB Output is correct
33 Correct 125 ms 196296 KB Output is correct
34 Correct 135 ms 196348 KB Output is correct
35 Correct 138 ms 196296 KB Output is correct
36 Correct 145 ms 196540 KB Output is correct
37 Correct 141 ms 196440 KB Output is correct
38 Correct 140 ms 196396 KB Output is correct
39 Correct 102 ms 196344 KB Output is correct
40 Correct 77 ms 196216 KB Output is correct
41 Correct 76 ms 196136 KB Output is correct
42 Correct 78 ms 196084 KB Output is correct
43 Correct 77 ms 196084 KB Output is correct
44 Correct 76 ms 196104 KB Output is correct
45 Correct 77 ms 196164 KB Output is correct
46 Correct 78 ms 196168 KB Output is correct
47 Correct 73 ms 196140 KB Output is correct
48 Correct 77 ms 196116 KB Output is correct
49 Correct 78 ms 196144 KB Output is correct
50 Execution timed out 1096 ms 218260 KB Time limit exceeded
51 Halted 0 ms 0 KB -