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Submission #844998

# Submission time Handle Problem Language Result Execution time Memory
844998 2023-09-06T10:38:18 Z hentai_lover Bigger segments (IZhO19_segments) C++14
100 / 100
 118 ms 30656 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;

const long long oo = 1LL * 1e15;
const int N = 5e5;
int n;
struct ST{
    vector<long long> t;
    void uni(){
        t.resize(N * 3);
        for(auto &i:t)i = -oo;
    }

    void upd(int poz, ll val, int v = 1, int l = 0, int r = n - 1){
        if(poz < 0)return;
        if(l == r){t[v] = val;return;}

        int c = (l + r)>>1;

        if(poz <= c)upd(poz, val, v<<1, l, c);
        else upd(poz, val, (v<<1)|1, c+1, r);

        t[v] = max(t[v<<1], t[(v<<1)|1]);
    }

    int get(long long val, int v = 1, int l = 0, int r = n - 1){
        if(l == r)return l;
        int c = (l + r) >> 1;

        if(t[(v<<1)|1]>=val)return get(val, (v<<1)|1,c+1,r);
        return get(val, v<<1,l,c);
    }
};

int32_t main() {
    ios_base::sync_with_stdio(0);
    //cout<<oo<<endl;
    cin>>n;
    int a[n];
    for(int i = 0; i < n; i += 1)cin>>a[i];

    ll sf[n + 1] = {};
    for(int i = n - 1; i >= 0; i -= 1)sf[i] = sf[i + 1] + a[i];

    ///dp[p] = {ans, min_sum}
    pair<int,ll> dp[n];
    ll sum = 0;
    for(int i = 0; i < n; i += 1){
        sum += a[i];
        dp[i] = {1, sum};
    }

    ST tree;
    tree.uni();
    tree.upd(0, sf[1] - dp[0].second);
    //cerr<<"upd: "<<sf[1] - dp[0].second<<endl;

    for(int i = 1; i < n; i += 1){
        int poz = tree.get(sf[i + 1]);
        //cerr<<"poz = "<<poz<<" get: "<<sf[i + 1]<<endl;
        if(tree.t[1] >= sf[i + 1]){
            dp[i] = max(dp[i], {dp[poz].first + 1, sf[poz + 1] - sf[i + 1]});
            //cerr<<"upd: "<<sf[i + 1] - dp[i].second<<endl;
        }
            tree.upd(i, sf[i + 1] - dp[i].second);

    }

//    cout<<"dp:";
//    for(int i = 0; i < n; i += 1)cout<<dp[i].first<<' '<<dp[i].second<<endl;

    int ans = 0;
    for(int i = 0; i < n; i += 1){
        ans = max(ans, dp[i].first);
    }
    cout<<ans;
}
/*
5
6 2 3 9 13
*/

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 12120 KB Output is correct
2 Correct 3 ms 12120 KB Output is correct
3 Correct 3 ms 12120 KB Output is correct
4 Correct 3 ms 12120 KB Output is correct
5 Correct 3 ms 12120 KB Output is correct
6 Correct 3 ms 12120 KB Output is correct
7 Correct 3 ms 12120 KB Output is correct
8 Correct 3 ms 12120 KB Output is correct
9 Correct 3 ms 12120 KB Output is correct
10 Correct 2 ms 12124 KB Output is correct
11 Correct 2 ms 12124 KB Output is correct
12 Correct 2 ms 12120 KB Output is correct
13 Correct 3 ms 12120 KB Output is correct
14 Correct 2 ms 12124 KB Output is correct
15 Correct 4 ms 12376 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 12120 KB Output is correct
2 Correct 3 ms 12120 KB Output is correct
3 Correct 3 ms 12120 KB Output is correct
4 Correct 3 ms 12120 KB Output is correct
5 Correct 3 ms 12120 KB Output is correct
6 Correct 3 ms 12120 KB Output is correct
7 Correct 3 ms 12120 KB Output is correct
8 Correct 3 ms 12120 KB Output is correct
9 Correct 3 ms 12120 KB Output is correct
10 Correct 2 ms 12124 KB Output is correct
11 Correct 2 ms 12124 KB Output is correct
12 Correct 2 ms 12120 KB Output is correct
13 Correct 3 ms 12120 KB Output is correct
14 Correct 2 ms 12124 KB Output is correct
15 Correct 4 ms 12376 KB Output is correct
16 Correct 3 ms 12120 KB Output is correct
17 Correct 3 ms 12120 KB Output is correct
18 Correct 3 ms 12120 KB Output is correct
19 Correct 2 ms 12124 KB Output is correct
20 Correct 3 ms 12120 KB Output is correct
21 Correct 2 ms 12120 KB Output is correct
22 Correct 3 ms 12120 KB Output is correct
23 Correct 3 ms 12120 KB Output is correct
24 Correct 3 ms 12120 KB Output is correct
25 Correct 3 ms 12120 KB Output is correct
26 Correct 3 ms 12120 KB Output is correct
27 Correct 2 ms 12132 KB Output is correct
28 Correct 3 ms 12120 KB Output is correct
29 Correct 3 ms 12124 KB Output is correct
30 Correct 2 ms 12124 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 12120 KB Output is correct
2 Correct 3 ms 12120 KB Output is correct
3 Correct 3 ms 12120 KB Output is correct
4 Correct 3 ms 12120 KB Output is correct
5 Correct 3 ms 12120 KB Output is correct
6 Correct 3 ms 12120 KB Output is correct
7 Correct 3 ms 12120 KB Output is correct
8 Correct 3 ms 12120 KB Output is correct
9 Correct 3 ms 12120 KB Output is correct
10 Correct 2 ms 12124 KB Output is correct
11 Correct 2 ms 12124 KB Output is correct
12 Correct 2 ms 12120 KB Output is correct
13 Correct 3 ms 12120 KB Output is correct
14 Correct 2 ms 12124 KB Output is correct
15 Correct 4 ms 12376 KB Output is correct
16 Correct 3 ms 12120 KB Output is correct
17 Correct 3 ms 12120 KB Output is correct
18 Correct 3 ms 12120 KB Output is correct
19 Correct 2 ms 12124 KB Output is correct
20 Correct 3 ms 12120 KB Output is correct
21 Correct 2 ms 12120 KB Output is correct
22 Correct 3 ms 12120 KB Output is correct
23 Correct 3 ms 12120 KB Output is correct
24 Correct 3 ms 12120 KB Output is correct
25 Correct 3 ms 12120 KB Output is correct
26 Correct 3 ms 12120 KB Output is correct
27 Correct 2 ms 12132 KB Output is correct
28 Correct 3 ms 12120 KB Output is correct
29 Correct 3 ms 12124 KB Output is correct
30 Correct 2 ms 12124 KB Output is correct
31 Correct 4 ms 12120 KB Output is correct
32 Correct 3 ms 12120 KB Output is correct
33 Correct 3 ms 12120 KB Output is correct
34 Correct 3 ms 12376 KB Output is correct
35 Correct 3 ms 12120 KB Output is correct
36 Correct 3 ms 12120 KB Output is correct
37 Correct 3 ms 12124 KB Output is correct
38 Correct 3 ms 12120 KB Output is correct
39 Correct 4 ms 12120 KB Output is correct
40 Correct 4 ms 12120 KB Output is correct
41 Correct 4 ms 12124 KB Output is correct
42 Correct 4 ms 12120 KB Output is correct
43 Correct 4 ms 12120 KB Output is correct
44 Correct 3 ms 12120 KB Output is correct
45 Correct 3 ms 12376 KB Output is correct

Subtask #4
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 12120 KB Output is correct
2 Correct 3 ms 12120 KB Output is correct
3 Correct 3 ms 12120 KB Output is correct
4 Correct 3 ms 12120 KB Output is correct
5 Correct 3 ms 12120 KB Output is correct
6 Correct 3 ms 12120 KB Output is correct
7 Correct 3 ms 12120 KB Output is correct
8 Correct 3 ms 12120 KB Output is correct
9 Correct 3 ms 12120 KB Output is correct
10 Correct 2 ms 12124 KB Output is correct
11 Correct 2 ms 12124 KB Output is correct
12 Correct 2 ms 12120 KB Output is correct
13 Correct 3 ms 12120 KB Output is correct
14 Correct 2 ms 12124 KB Output is correct
15 Correct 4 ms 12376 KB Output is correct
16 Correct 3 ms 12120 KB Output is correct
17 Correct 3 ms 12120 KB Output is correct
18 Correct 3 ms 12120 KB Output is correct
19 Correct 2 ms 12124 KB Output is correct
20 Correct 3 ms 12120 KB Output is correct
21 Correct 2 ms 12120 KB Output is correct
22 Correct 3 ms 12120 KB Output is correct
23 Correct 3 ms 12120 KB Output is correct
24 Correct 3 ms 12120 KB Output is correct
25 Correct 3 ms 12120 KB Output is correct
26 Correct 3 ms 12120 KB Output is correct
27 Correct 2 ms 12132 KB Output is correct
28 Correct 3 ms 12120 KB Output is correct
29 Correct 3 ms 12124 KB Output is correct
30 Correct 2 ms 12124 KB Output is correct
31 Correct 4 ms 12120 KB Output is correct
32 Correct 3 ms 12120 KB Output is correct
33 Correct 3 ms 12120 KB Output is correct
34 Correct 3 ms 12376 KB Output is correct
35 Correct 3 ms 12120 KB Output is correct
36 Correct 3 ms 12120 KB Output is correct
37 Correct 3 ms 12124 KB Output is correct
38 Correct 3 ms 12120 KB Output is correct
39 Correct 4 ms 12120 KB Output is correct
40 Correct 4 ms 12120 KB Output is correct
41 Correct 4 ms 12124 KB Output is correct
42 Correct 4 ms 12120 KB Output is correct
43 Correct 4 ms 12120 KB Output is correct
44 Correct 3 ms 12120 KB Output is correct
45 Correct 3 ms 12376 KB Output is correct
46 Correct 17 ms 14936 KB Output is correct
47 Correct 19 ms 14936 KB Output is correct
48 Correct 22 ms 15720 KB Output is correct
49 Correct 25 ms 15696 KB Output is correct
50 Correct 23 ms 15704 KB Output is correct
51 Correct 25 ms 15704 KB Output is correct
52 Correct 13 ms 13912 KB Output is correct
53 Correct 8 ms 13144 KB Output is correct
54 Correct 19 ms 14936 KB Output is correct
55 Correct 23 ms 15700 KB Output is correct
56 Correct 22 ms 15192 KB Output is correct
57 Correct 20 ms 15192 KB Output is correct
58 Correct 20 ms 15192 KB Output is correct
59 Correct 23 ms 15704 KB Output is correct
60 Correct 21 ms 15448 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 12120 KB Output is correct
2 Correct 3 ms 12120 KB Output is correct
3 Correct 3 ms 12120 KB Output is correct
4 Correct 3 ms 12120 KB Output is correct
5 Correct 3 ms 12120 KB Output is correct
6 Correct 3 ms 12120 KB Output is correct
7 Correct 3 ms 12120 KB Output is correct
8 Correct 3 ms 12120 KB Output is correct
9 Correct 3 ms 12120 KB Output is correct
10 Correct 2 ms 12124 KB Output is correct
11 Correct 2 ms 12124 KB Output is correct
12 Correct 2 ms 12120 KB Output is correct
13 Correct 3 ms 12120 KB Output is correct
14 Correct 2 ms 12124 KB Output is correct
15 Correct 4 ms 12376 KB Output is correct
16 Correct 3 ms 12120 KB Output is correct
17 Correct 3 ms 12120 KB Output is correct
18 Correct 3 ms 12120 KB Output is correct
19 Correct 2 ms 12124 KB Output is correct
20 Correct 3 ms 12120 KB Output is correct
21 Correct 2 ms 12120 KB Output is correct
22 Correct 3 ms 12120 KB Output is correct
23 Correct 3 ms 12120 KB Output is correct
24 Correct 3 ms 12120 KB Output is correct
25 Correct 3 ms 12120 KB Output is correct
26 Correct 3 ms 12120 KB Output is correct
27 Correct 2 ms 12132 KB Output is correct
28 Correct 3 ms 12120 KB Output is correct
29 Correct 3 ms 12124 KB Output is correct
30 Correct 2 ms 12124 KB Output is correct
31 Correct 4 ms 12120 KB Output is correct
32 Correct 3 ms 12120 KB Output is correct
33 Correct 3 ms 12120 KB Output is correct
34 Correct 3 ms 12376 KB Output is correct
35 Correct 3 ms 12120 KB Output is correct
36 Correct 3 ms 12120 KB Output is correct
37 Correct 3 ms 12124 KB Output is correct
38 Correct 3 ms 12120 KB Output is correct
39 Correct 4 ms 12120 KB Output is correct
40 Correct 4 ms 12120 KB Output is correct
41 Correct 4 ms 12124 KB Output is correct
42 Correct 4 ms 12120 KB Output is correct
43 Correct 4 ms 12120 KB Output is correct
44 Correct 3 ms 12120 KB Output is correct
45 Correct 3 ms 12376 KB Output is correct
46 Correct 17 ms 14936 KB Output is correct
47 Correct 19 ms 14936 KB Output is correct
48 Correct 22 ms 15720 KB Output is correct
49 Correct 25 ms 15696 KB Output is correct
50 Correct 23 ms 15704 KB Output is correct
51 Correct 25 ms 15704 KB Output is correct
52 Correct 13 ms 13912 KB Output is correct
53 Correct 8 ms 13144 KB Output is correct
54 Correct 19 ms 14936 KB Output is correct
55 Correct 23 ms 15700 KB Output is correct
56 Correct 22 ms 15192 KB Output is correct
57 Correct 20 ms 15192 KB Output is correct
58 Correct 20 ms 15192 KB Output is correct
59 Correct 23 ms 15704 KB Output is correct
60 Correct 21 ms 15448 KB Output is correct
61 Correct 83 ms 27728 KB Output is correct
62 Correct 96 ms 27728 KB Output is correct
63 Correct 96 ms 27984 KB Output is correct
64 Correct 109 ms 30288 KB Output is correct
65 Correct 118 ms 30544 KB Output is correct
66 Correct 110 ms 30548 KB Output is correct
67 Correct 88 ms 26960 KB Output is correct
68 Correct 44 ms 19540 KB Output is correct
69 Correct 97 ms 26744 KB Output is correct
70 Correct 110 ms 30656 KB Output is correct
71 Correct 96 ms 27728 KB Output is correct
72 Correct 96 ms 27984 KB Output is correct
73 Correct 99 ms 28752 KB Output is correct
74 Correct 102 ms 29004 KB Output is correct
75 Correct 102 ms 29008 KB Output is correct