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답안 #161952

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
161952 2019-11-05T11:50:39 Z Alexa2001 Bigger segments (IZhO19_segments) C++17
100 / 100
 147 ms 20984 KB 
#include <bits/stdc++.h>

using namespace std;

const int Nmax = 5e5 + 5;
typedef long long ll;

ll s[Nmax];
int n, a[Nmax];

pair<int, ll> dp[Nmax];

class AIB 
{
    int a[Nmax];
    int ub(int x) { return (x&(-x)); }

public:
    int query(int x)
    {
        int ans = 0;
        for(; x; x-=ub(x)) ans = max(ans, a[x]);
        return ans;
    }

    void update(int x, int y)
    {
        for(; x<=n; x+=ub(x)) a[x] = max(a[x], y);
    }
} aib;

void add(int pos)
{
    int leftmost = lower_bound(s+1, s+n+1, s[pos] + dp[pos].second) - s;
    aib.update(leftmost, pos);
}

int main()
{
  //  freopen("input", "r", stdin);
    cin.sync_with_stdio(false); cin.tie(0);

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

    for(i=1; i<=n; ++i)
    {
        int j = aib.query(i);
        
        dp[i] = { dp[j].first + 1, s[i] - s[j] };
        add(i);
    }

    cout << dp[n].first << '\n';
    return 0;
}

Subtask #1
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 11 ms 376 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 376 KB Output is correct

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 11 ms 376 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 2 ms 504 KB Output is correct
32 Correct 3 ms 508 KB Output is correct
33 Correct 3 ms 504 KB Output is correct
34 Correct 3 ms 504 KB Output is correct
35 Correct 3 ms 504 KB Output is correct
36 Correct 3 ms 504 KB Output is correct
37 Correct 3 ms 504 KB Output is correct
38 Correct 2 ms 376 KB Output is correct
39 Correct 3 ms 504 KB Output is correct
40 Correct 3 ms 504 KB Output is correct
41 Correct 6 ms 504 KB Output is correct
42 Correct 3 ms 504 KB Output is correct
43 Correct 3 ms 504 KB Output is correct
44 Correct 3 ms 504 KB Output is correct
45 Correct 3 ms 504 KB Output is correct

Subtask #4
36.0 / 36.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 11 ms 376 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 2 ms 504 KB Output is correct
32 Correct 3 ms 508 KB Output is correct
33 Correct 3 ms 504 KB Output is correct
34 Correct 3 ms 504 KB Output is correct
35 Correct 3 ms 504 KB Output is correct
36 Correct 3 ms 504 KB Output is correct
37 Correct 3 ms 504 KB Output is correct
38 Correct 2 ms 376 KB Output is correct
39 Correct 3 ms 504 KB Output is correct
40 Correct 3 ms 504 KB Output is correct
41 Correct 6 ms 504 KB Output is correct
42 Correct 3 ms 504 KB Output is correct
43 Correct 3 ms 504 KB Output is correct
44 Correct 3 ms 504 KB Output is correct
45 Correct 3 ms 504 KB Output is correct
46 Correct 18 ms 3448 KB Output is correct
47 Correct 39 ms 3964 KB Output is correct
48 Correct 27 ms 4296 KB Output is correct
49 Correct 28 ms 4472 KB Output is correct
50 Correct 29 ms 4520 KB Output is correct
51 Correct 30 ms 4472 KB Output is correct
52 Correct 15 ms 2424 KB Output is correct
53 Correct 10 ms 1628 KB Output is correct
54 Correct 21 ms 3704 KB Output is correct
55 Correct 29 ms 4472 KB Output is correct
56 Correct 24 ms 3960 KB Output is correct
57 Correct 22 ms 3704 KB Output is correct
58 Correct 23 ms 3960 KB Output is correct
59 Correct 26 ms 4136 KB Output is correct
60 Correct 25 ms 4088 KB Output is correct

Subtask #5
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 11 ms 376 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 2 ms 504 KB Output is correct
32 Correct 3 ms 508 KB Output is correct
33 Correct 3 ms 504 KB Output is correct
34 Correct 3 ms 504 KB Output is correct
35 Correct 3 ms 504 KB Output is correct
36 Correct 3 ms 504 KB Output is correct
37 Correct 3 ms 504 KB Output is correct
38 Correct 2 ms 376 KB Output is correct
39 Correct 3 ms 504 KB Output is correct
40 Correct 3 ms 504 KB Output is correct
41 Correct 6 ms 504 KB Output is correct
42 Correct 3 ms 504 KB Output is correct
43 Correct 3 ms 504 KB Output is correct
44 Correct 3 ms 504 KB Output is correct
45 Correct 3 ms 504 KB Output is correct
46 Correct 18 ms 3448 KB Output is correct
47 Correct 39 ms 3964 KB Output is correct
48 Correct 27 ms 4296 KB Output is correct
49 Correct 28 ms 4472 KB Output is correct
50 Correct 29 ms 4520 KB Output is correct
51 Correct 30 ms 4472 KB Output is correct
52 Correct 15 ms 2424 KB Output is correct
53 Correct 10 ms 1628 KB Output is correct
54 Correct 21 ms 3704 KB Output is correct
55 Correct 29 ms 4472 KB Output is correct
56 Correct 24 ms 3960 KB Output is correct
57 Correct 22 ms 3704 KB Output is correct
58 Correct 23 ms 3960 KB Output is correct
59 Correct 26 ms 4136 KB Output is correct
60 Correct 25 ms 4088 KB Output is correct
61 Correct 85 ms 16032 KB Output is correct
62 Correct 92 ms 17008 KB Output is correct
63 Correct 108 ms 17960 KB Output is correct
64 Correct 147 ms 20596 KB Output is correct
65 Correct 141 ms 20984 KB Output is correct
66 Correct 139 ms 20944 KB Output is correct
67 Correct 112 ms 16772 KB Output is correct
68 Correct 56 ms 8696 KB Output is correct
69 Correct 103 ms 17020 KB Output is correct
70 Correct 142 ms 20856 KB Output is correct
71 Correct 111 ms 18036 KB Output is correct
72 Correct 106 ms 17724 KB Output is correct
73 Correct 120 ms 18808 KB Output is correct
74 Correct 124 ms 19320 KB Output is correct
75 Correct 123 ms 19320 KB Output is correct