답안 #956096

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
956096	2024-04-01T05:05:41 Z	Yang8on	Bigger segments (IZhO19_segments)	C++14	100 / 100	123 ms	47248 KB

segments

#include <bits/stdc++.h>
#define gsn "Bigger segments"
#define ll long long
#define pii pair<int, ll>
#define gb(i, j) ((i >> j) & 1)
#define fi(i, a, b) for(int i = a; i <= b; i++)
#define fid(i, a, b) for(int i = a; i >= b; i--)

using namespace std;

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll GetRandom(ll l, ll r)
{
    return uniform_int_distribution<ll> (l, r) (rng);
}

const int maxn = 500005;

int n;
ll a[maxn], s[maxn];
pii dp[maxn];

void solve()
{
    cin >> n;
    fi(i, 1, n) cin >> a[i], s[i] = s[i - 1] + a[i];

    multiset<pair<ll, pii>> se;
    pii ma = {1, s[0]};

    fi(i, 1, n)
    {
        dp[i] = {ma.first, s[i] - ma.second};
        se.insert({ dp[i].second + s[i], make_pair(dp[i].first + 1, s[i]) });

        while(se.size())
        {
            auto it = se.begin();
            if(it->first <= s[i + 1])
            {
                se.erase(it);
                ma = max(ma, it->second);
            }
            else break;
        }
    }

    cout << dp[n].first;
}


int main()
{
    if(fopen(gsn".inp", "r"))
    {
        freopen(gsn".inp", "r", stdin);
        freopen(gsn".out", "w", stdout);
    }

    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    cout.tie(NULL);

    int nTest = 1;
//    cin >> nTest;

    while(nTest --)
    {
        solve();
    }




    /// ------------------check time!-----------------///
    cerr << "\n" << "\nTime elapsed: " << 1000 * clock() / CLOCKS_PER_SEC << "ms\n";
    return 0;
}

Compilation message

segments.cpp: In function 'int main()':
segments.cpp:56:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   56 |         freopen(gsn".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
segments.cpp:57:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   57 |         freopen(gsn".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2392 KB	Output is correct
2	Correct	2 ms	2392 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2648 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2548 KB	Output is correct
8	Correct	1 ms	2648 KB	Output is correct
9	Correct	1 ms	2648 KB	Output is correct
10	Correct	1 ms	2392 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2408 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct

Subtask #2
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2392 KB	Output is correct
2	Correct	2 ms	2392 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2648 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2548 KB	Output is correct
8	Correct	1 ms	2648 KB	Output is correct
9	Correct	1 ms	2648 KB	Output is correct
10	Correct	1 ms	2392 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2408 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	1 ms	2648 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	1 ms	2392 KB	Output is correct
22	Correct	1 ms	2396 KB	Output is correct
23	Correct	1 ms	2548 KB	Output is correct
24	Correct	1 ms	2392 KB	Output is correct
25	Correct	1 ms	2396 KB	Output is correct
26	Correct	1 ms	2396 KB	Output is correct
27	Correct	1 ms	2392 KB	Output is correct
28	Correct	1 ms	2396 KB	Output is correct
29	Correct	1 ms	2396 KB	Output is correct
30	Correct	1 ms	2396 KB	Output is correct

Subtask #3
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2392 KB	Output is correct
2	Correct	2 ms	2392 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2648 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2548 KB	Output is correct
8	Correct	1 ms	2648 KB	Output is correct
9	Correct	1 ms	2648 KB	Output is correct
10	Correct	1 ms	2392 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2408 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	1 ms	2648 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	1 ms	2392 KB	Output is correct
22	Correct	1 ms	2396 KB	Output is correct
23	Correct	1 ms	2548 KB	Output is correct
24	Correct	1 ms	2392 KB	Output is correct
25	Correct	1 ms	2396 KB	Output is correct
26	Correct	1 ms	2396 KB	Output is correct
27	Correct	1 ms	2392 KB	Output is correct
28	Correct	1 ms	2396 KB	Output is correct
29	Correct	1 ms	2396 KB	Output is correct
30	Correct	1 ms	2396 KB	Output is correct
31	Correct	1 ms	2648 KB	Output is correct
32	Correct	1 ms	2396 KB	Output is correct
33	Correct	1 ms	2396 KB	Output is correct
34	Correct	1 ms	2652 KB	Output is correct
35	Correct	1 ms	2396 KB	Output is correct
36	Correct	1 ms	2396 KB	Output is correct
37	Correct	1 ms	2396 KB	Output is correct
38	Correct	1 ms	2396 KB	Output is correct
39	Correct	1 ms	2396 KB	Output is correct
40	Correct	1 ms	2396 KB	Output is correct
41	Correct	2 ms	2396 KB	Output is correct
42	Correct	1 ms	2652 KB	Output is correct
43	Correct	1 ms	2396 KB	Output is correct
44	Correct	1 ms	2396 KB	Output is correct
45	Correct	1 ms	2396 KB	Output is correct

Subtask #4
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2392 KB	Output is correct
2	Correct	2 ms	2392 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2648 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2548 KB	Output is correct
8	Correct	1 ms	2648 KB	Output is correct
9	Correct	1 ms	2648 KB	Output is correct
10	Correct	1 ms	2392 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2408 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	1 ms	2648 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	1 ms	2392 KB	Output is correct
22	Correct	1 ms	2396 KB	Output is correct
23	Correct	1 ms	2548 KB	Output is correct
24	Correct	1 ms	2392 KB	Output is correct
25	Correct	1 ms	2396 KB	Output is correct
26	Correct	1 ms	2396 KB	Output is correct
27	Correct	1 ms	2392 KB	Output is correct
28	Correct	1 ms	2396 KB	Output is correct
29	Correct	1 ms	2396 KB	Output is correct
30	Correct	1 ms	2396 KB	Output is correct
31	Correct	1 ms	2648 KB	Output is correct
32	Correct	1 ms	2396 KB	Output is correct
33	Correct	1 ms	2396 KB	Output is correct
34	Correct	1 ms	2652 KB	Output is correct
35	Correct	1 ms	2396 KB	Output is correct
36	Correct	1 ms	2396 KB	Output is correct
37	Correct	1 ms	2396 KB	Output is correct
38	Correct	1 ms	2396 KB	Output is correct
39	Correct	1 ms	2396 KB	Output is correct
40	Correct	1 ms	2396 KB	Output is correct
41	Correct	2 ms	2396 KB	Output is correct
42	Correct	1 ms	2652 KB	Output is correct
43	Correct	1 ms	2396 KB	Output is correct
44	Correct	1 ms	2396 KB	Output is correct
45	Correct	1 ms	2396 KB	Output is correct
46	Correct	20 ms	15648 KB	Output is correct
47	Correct	15 ms	9820 KB	Output is correct
48	Correct	16 ms	9800 KB	Output is correct
49	Correct	13 ms	9820 KB	Output is correct
50	Correct	12 ms	9308 KB	Output is correct
51	Correct	16 ms	9420 KB	Output is correct
52	Correct	9 ms	4956 KB	Output is correct
53	Correct	6 ms	4956 KB	Output is correct
54	Correct	14 ms	9556 KB	Output is correct
55	Correct	16 ms	9308 KB	Output is correct
56	Correct	10 ms	9308 KB	Output is correct
57	Correct	14 ms	12032 KB	Output is correct
58	Correct	13 ms	10844 KB	Output is correct
59	Correct	10 ms	9304 KB	Output is correct
60	Correct	11 ms	9308 KB	Output is correct

Subtask #5
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2392 KB	Output is correct
2	Correct	2 ms	2392 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2648 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2548 KB	Output is correct
8	Correct	1 ms	2648 KB	Output is correct
9	Correct	1 ms	2648 KB	Output is correct
10	Correct	1 ms	2392 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2408 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	1 ms	2648 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	1 ms	2392 KB	Output is correct
22	Correct	1 ms	2396 KB	Output is correct
23	Correct	1 ms	2548 KB	Output is correct
24	Correct	1 ms	2392 KB	Output is correct
25	Correct	1 ms	2396 KB	Output is correct
26	Correct	1 ms	2396 KB	Output is correct
27	Correct	1 ms	2392 KB	Output is correct
28	Correct	1 ms	2396 KB	Output is correct
29	Correct	1 ms	2396 KB	Output is correct
30	Correct	1 ms	2396 KB	Output is correct
31	Correct	1 ms	2648 KB	Output is correct
32	Correct	1 ms	2396 KB	Output is correct
33	Correct	1 ms	2396 KB	Output is correct
34	Correct	1 ms	2652 KB	Output is correct
35	Correct	1 ms	2396 KB	Output is correct
36	Correct	1 ms	2396 KB	Output is correct
37	Correct	1 ms	2396 KB	Output is correct
38	Correct	1 ms	2396 KB	Output is correct
39	Correct	1 ms	2396 KB	Output is correct
40	Correct	1 ms	2396 KB	Output is correct
41	Correct	2 ms	2396 KB	Output is correct
42	Correct	1 ms	2652 KB	Output is correct
43	Correct	1 ms	2396 KB	Output is correct
44	Correct	1 ms	2396 KB	Output is correct
45	Correct	1 ms	2396 KB	Output is correct
46	Correct	20 ms	15648 KB	Output is correct
47	Correct	15 ms	9820 KB	Output is correct
48	Correct	16 ms	9800 KB	Output is correct
49	Correct	13 ms	9820 KB	Output is correct
50	Correct	12 ms	9308 KB	Output is correct
51	Correct	16 ms	9420 KB	Output is correct
52	Correct	9 ms	4956 KB	Output is correct
53	Correct	6 ms	4956 KB	Output is correct
54	Correct	14 ms	9556 KB	Output is correct
55	Correct	16 ms	9308 KB	Output is correct
56	Correct	10 ms	9308 KB	Output is correct
57	Correct	14 ms	12032 KB	Output is correct
58	Correct	13 ms	10844 KB	Output is correct
59	Correct	10 ms	9304 KB	Output is correct
60	Correct	11 ms	9308 KB	Output is correct
61	Correct	123 ms	47248 KB	Output is correct
62	Correct	89 ms	31824 KB	Output is correct
63	Correct	77 ms	21840 KB	Output is correct
64	Correct	59 ms	15880 KB	Output is correct
65	Correct	55 ms	15956 KB	Output is correct
66	Correct	78 ms	16136 KB	Output is correct
67	Correct	63 ms	13864 KB	Output is correct
68	Correct	31 ms	11356 KB	Output is correct
69	Correct	64 ms	15952 KB	Output is correct
70	Correct	73 ms	15952 KB	Output is correct
71	Correct	39 ms	15964 KB	Output is correct
72	Correct	71 ms	28604 KB	Output is correct
73	Correct	57 ms	20560 KB	Output is correct
74	Correct	47 ms	15952 KB	Output is correct
75	Correct	59 ms	15952 KB	Output is correct

답안 #956096

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