oj.uz

Submission #166840

# Submission time Handle Problem Language Result Execution time Memory
166840 2019-12-04T09:22:27 Z dandrozavr Bigger segments (IZhO19_segments) C++14
37 / 100
 26 ms 6392 KB 
/*
Uruchamiamy samolot zwiadowczy ( + 500% do wzlamaniej )

/▄/  /█/  /◐/   /▐/   /▌/ /▀/ /░/ /🔥/   choose  own style!

***IT'S OUR LONG WAY TO THE OIILLLL***


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*/



//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4")

#include <bits/stdc++.h>

using namespace std;
#include <ext/pb_ds/detail/standard_policies.hpp>'
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;template <typename T> using ordered_set = tree <T, null_type, less< T >, rb_tree_tag,tree_order_statistics_node_update>;

#define pb push_back
#define ll long long
#define ld long double
#define fi first
#define se second
//#define pi 3.14159265358979323846
#define pii pair < ll , int >
#define pipii pair< int, pair < int , int > >
#define siz(n) (int)(n.size())
#define TIME 1.0 * clock() / CLOCKS_PER_SEC

const int inf=1e9 + 7;
const ll inf18=1e18 + 7;
const int N=1e5 + 7;
const int MN = 2097152;
const int M = 1e9 + 7;
int k, n, m, st, en;

vector < pii > g[N];

int main() {

    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    #ifdef Estb_probitie
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
    #endif

    int n;
    cin >> n;
    int a[n];
    ll pref[n] = {};
    ll psum[n] = {};

    for (int i = 0; i < n; ++i)
        cin >> a[i];
    pref[0] = a[0];
    for (int i = 1; i < n; ++i)
        pref[i] = pref[i - 1] + a[i];

    int dp[n] = {};
    int st[n] = {};
    dp[0] = 1;
    st[0] = 0;
    int ans = 0;

    for (int i = 0; i < n; ++i)
    {
        if (i)
            if (dp[i] < dp[i - 1])
            {
                dp[i] = dp[i - 1];
                st[i] = st[i - 1];
                psum[i] = psum[i - 1];
            }
        ans = max(ans, dp[i]);
        ll ousum = pref[i];
        if (st[i])
            ousum -= pref[st[i] - 1];

        while(ousum - 2 * a[st[i]] >= psum[i])
        {
            psum[i] += a[st[i]];
            ousum -= a[st[i]];
            ++st[i];
        }


        int l = i + 1, r = n;
        while(l < r)
        {
            int mid = (l + r) >> 1;
            if (pref[mid] - pref[i] < ousum)
                l = mid + 1; else r = mid;
        }
//        cout<<pref[i] - (st[i] - 1)<<" "<<dp[i]<<'\n';
        if (l == n) continue;
        if (dp[l] <= dp[i] + 1)
        {
            dp[l] = dp[i] + 1;
            st[l] = i + 1;
            psum[l] = ousum;
        }
    }


    cout << ans;
}

Compilation message

segments.cpp:35:50: warning: missing terminating ' character
 #include <ext/pb_ds/detail/standard_policies.hpp>'
                                                  ^
segments.cpp:35:50: warning: extra tokens at end of #include directive

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 4 ms 2684 KB Output is correct
3 Correct 4 ms 2680 KB Output is correct
4 Correct 4 ms 2680 KB Output is correct
5 Correct 4 ms 2684 KB Output is correct
6 Correct 4 ms 2680 KB Output is correct
7 Correct 19 ms 2680 KB Output is correct
8 Correct 4 ms 2680 KB Output is correct
9 Correct 4 ms 2680 KB Output is correct
10 Correct 4 ms 2680 KB Output is correct
11 Correct 5 ms 2680 KB Output is correct
12 Correct 4 ms 2680 KB Output is correct
13 Correct 4 ms 2680 KB Output is correct
14 Correct 4 ms 2680 KB Output is correct
15 Correct 4 ms 2684 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 4 ms 2684 KB Output is correct
3 Correct 4 ms 2680 KB Output is correct
4 Correct 4 ms 2680 KB Output is correct
5 Correct 4 ms 2684 KB Output is correct
6 Correct 4 ms 2680 KB Output is correct
7 Correct 19 ms 2680 KB Output is correct
8 Correct 4 ms 2680 KB Output is correct
9 Correct 4 ms 2680 KB Output is correct
10 Correct 4 ms 2680 KB Output is correct
11 Correct 5 ms 2680 KB Output is correct
12 Correct 4 ms 2680 KB Output is correct
13 Correct 4 ms 2680 KB Output is correct
14 Correct 4 ms 2680 KB Output is correct
15 Correct 4 ms 2684 KB Output is correct
16 Correct 4 ms 2680 KB Output is correct
17 Correct 4 ms 2680 KB Output is correct
18 Correct 4 ms 2680 KB Output is correct
19 Correct 4 ms 2680 KB Output is correct
20 Correct 4 ms 2680 KB Output is correct
21 Correct 4 ms 2680 KB Output is correct
22 Correct 4 ms 2684 KB Output is correct
23 Correct 4 ms 2680 KB Output is correct
24 Correct 4 ms 2680 KB Output is correct
25 Correct 4 ms 2680 KB Output is correct
26 Correct 4 ms 2680 KB Output is correct
27 Correct 4 ms 2680 KB Output is correct
28 Correct 4 ms 2680 KB Output is correct
29 Correct 4 ms 2680 KB Output is correct
30 Correct 4 ms 2680 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 4 ms 2684 KB Output is correct
3 Correct 4 ms 2680 KB Output is correct
4 Correct 4 ms 2680 KB Output is correct
5 Correct 4 ms 2684 KB Output is correct
6 Correct 4 ms 2680 KB Output is correct
7 Correct 19 ms 2680 KB Output is correct
8 Correct 4 ms 2680 KB Output is correct
9 Correct 4 ms 2680 KB Output is correct
10 Correct 4 ms 2680 KB Output is correct
11 Correct 5 ms 2680 KB Output is correct
12 Correct 4 ms 2680 KB Output is correct
13 Correct 4 ms 2680 KB Output is correct
14 Correct 4 ms 2680 KB Output is correct
15 Correct 4 ms 2684 KB Output is correct
16 Correct 4 ms 2680 KB Output is correct
17 Correct 4 ms 2680 KB Output is correct
18 Correct 4 ms 2680 KB Output is correct
19 Correct 4 ms 2680 KB Output is correct
20 Correct 4 ms 2680 KB Output is correct
21 Correct 4 ms 2680 KB Output is correct
22 Correct 4 ms 2684 KB Output is correct
23 Correct 4 ms 2680 KB Output is correct
24 Correct 4 ms 2680 KB Output is correct
25 Correct 4 ms 2680 KB Output is correct
26 Correct 4 ms 2680 KB Output is correct
27 Correct 4 ms 2680 KB Output is correct
28 Correct 4 ms 2680 KB Output is correct
29 Correct 4 ms 2680 KB Output is correct
30 Correct 4 ms 2680 KB Output is correct
31 Correct 4 ms 2808 KB Output is correct
32 Correct 4 ms 2936 KB Output is correct
33 Correct 5 ms 2808 KB Output is correct
34 Correct 5 ms 2680 KB Output is correct
35 Correct 5 ms 2808 KB Output is correct
36 Correct 5 ms 2808 KB Output is correct
37 Correct 5 ms 2784 KB Output is correct
38 Correct 4 ms 2684 KB Output is correct
39 Correct 4 ms 2808 KB Output is correct
40 Correct 5 ms 2808 KB Output is correct
41 Correct 4 ms 2808 KB Output is correct
42 Correct 5 ms 2808 KB Output is correct
43 Correct 4 ms 2808 KB Output is correct
44 Correct 5 ms 2808 KB Output is correct
45 Correct 4 ms 2808 KB Output is correct

Subtask #4
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 4 ms 2684 KB Output is correct
3 Correct 4 ms 2680 KB Output is correct
4 Correct 4 ms 2680 KB Output is correct
5 Correct 4 ms 2684 KB Output is correct
6 Correct 4 ms 2680 KB Output is correct
7 Correct 19 ms 2680 KB Output is correct
8 Correct 4 ms 2680 KB Output is correct
9 Correct 4 ms 2680 KB Output is correct
10 Correct 4 ms 2680 KB Output is correct
11 Correct 5 ms 2680 KB Output is correct
12 Correct 4 ms 2680 KB Output is correct
13 Correct 4 ms 2680 KB Output is correct
14 Correct 4 ms 2680 KB Output is correct
15 Correct 4 ms 2684 KB Output is correct
16 Correct 4 ms 2680 KB Output is correct
17 Correct 4 ms 2680 KB Output is correct
18 Correct 4 ms 2680 KB Output is correct
19 Correct 4 ms 2680 KB Output is correct
20 Correct 4 ms 2680 KB Output is correct
21 Correct 4 ms 2680 KB Output is correct
22 Correct 4 ms 2684 KB Output is correct
23 Correct 4 ms 2680 KB Output is correct
24 Correct 4 ms 2680 KB Output is correct
25 Correct 4 ms 2680 KB Output is correct
26 Correct 4 ms 2680 KB Output is correct
27 Correct 4 ms 2680 KB Output is correct
28 Correct 4 ms 2680 KB Output is correct
29 Correct 4 ms 2680 KB Output is correct
30 Correct 4 ms 2680 KB Output is correct
31 Correct 4 ms 2808 KB Output is correct
32 Correct 4 ms 2936 KB Output is correct
33 Correct 5 ms 2808 KB Output is correct
34 Correct 5 ms 2680 KB Output is correct
35 Correct 5 ms 2808 KB Output is correct
36 Correct 5 ms 2808 KB Output is correct
37 Correct 5 ms 2784 KB Output is correct
38 Correct 4 ms 2684 KB Output is correct
39 Correct 4 ms 2808 KB Output is correct
40 Correct 5 ms 2808 KB Output is correct
41 Correct 4 ms 2808 KB Output is correct
42 Correct 5 ms 2808 KB Output is correct
43 Correct 4 ms 2808 KB Output is correct
44 Correct 5 ms 2808 KB Output is correct
45 Correct 4 ms 2808 KB Output is correct
46 Correct 18 ms 5752 KB Output is correct
47 Correct 22 ms 5880 KB Output is correct
48 Correct 24 ms 6264 KB Output is correct
49 Correct 23 ms 6392 KB Output is correct
50 Correct 23 ms 6392 KB Output is correct
51 Incorrect 26 ms 6392 KB Output isn't correct
52 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 4 ms 2684 KB Output is correct
3 Correct 4 ms 2680 KB Output is correct
4 Correct 4 ms 2680 KB Output is correct
5 Correct 4 ms 2684 KB Output is correct
6 Correct 4 ms 2680 KB Output is correct
7 Correct 19 ms 2680 KB Output is correct
8 Correct 4 ms 2680 KB Output is correct
9 Correct 4 ms 2680 KB Output is correct
10 Correct 4 ms 2680 KB Output is correct
11 Correct 5 ms 2680 KB Output is correct
12 Correct 4 ms 2680 KB Output is correct
13 Correct 4 ms 2680 KB Output is correct
14 Correct 4 ms 2680 KB Output is correct
15 Correct 4 ms 2684 KB Output is correct
16 Correct 4 ms 2680 KB Output is correct
17 Correct 4 ms 2680 KB Output is correct
18 Correct 4 ms 2680 KB Output is correct
19 Correct 4 ms 2680 KB Output is correct
20 Correct 4 ms 2680 KB Output is correct
21 Correct 4 ms 2680 KB Output is correct
22 Correct 4 ms 2684 KB Output is correct
23 Correct 4 ms 2680 KB Output is correct
24 Correct 4 ms 2680 KB Output is correct
25 Correct 4 ms 2680 KB Output is correct
26 Correct 4 ms 2680 KB Output is correct
27 Correct 4 ms 2680 KB Output is correct
28 Correct 4 ms 2680 KB Output is correct
29 Correct 4 ms 2680 KB Output is correct
30 Correct 4 ms 2680 KB Output is correct
31 Correct 4 ms 2808 KB Output is correct
32 Correct 4 ms 2936 KB Output is correct
33 Correct 5 ms 2808 KB Output is correct
34 Correct 5 ms 2680 KB Output is correct
35 Correct 5 ms 2808 KB Output is correct
36 Correct 5 ms 2808 KB Output is correct
37 Correct 5 ms 2784 KB Output is correct
38 Correct 4 ms 2684 KB Output is correct
39 Correct 4 ms 2808 KB Output is correct
40 Correct 5 ms 2808 KB Output is correct
41 Correct 4 ms 2808 KB Output is correct
42 Correct 5 ms 2808 KB Output is correct
43 Correct 4 ms 2808 KB Output is correct
44 Correct 5 ms 2808 KB Output is correct
45 Correct 4 ms 2808 KB Output is correct
46 Correct 18 ms 5752 KB Output is correct
47 Correct 22 ms 5880 KB Output is correct
48 Correct 24 ms 6264 KB Output is correct
49 Correct 23 ms 6392 KB Output is correct
50 Correct 23 ms 6392 KB Output is correct
51 Incorrect 26 ms 6392 KB Output isn't correct
52 Halted 0 ms 0 KB -