답안 #844998

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
844998	2023-09-06T10:38:18 Z	hentai_lover	Bigger segments (IZhO19_segments)	C++14	100 / 100	118 ms	30656 KB

segments

#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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

답안 #844998

Compilation message

Subtask #1 13.0 / 13.0

Subtask #2 14.0 / 14.0

Subtask #3 10.0 / 10.0

Subtask #4 36.0 / 36.0

Subtask #5 27.0 / 27.0

Subtask #1
13.0 / 13.0

Subtask #2
14.0 / 14.0

Subtask #3
10.0 / 10.0

Subtask #4
36.0 / 36.0

Subtask #5
27.0 / 27.0