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Submission #566412

# Submission time Handle Problem Language Result Execution time Memory
566412 2022-05-22T09:52:18 Z Stickfish Bigger segments (IZhO19_segments) C++17
100 / 100
 273 ms 14884 KB 
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
using ll = long long;

const int MAXN = 5e5 + 123;
int a[MAXN];
ll psm_[MAXN];
ll* psm = psm_ + 1;
pair<int, int> dp[MAXN];

signed main() {
    int n;
    cin >> n;
    for (int i = 0; i < n; ++i) {
        cin >> a[i];
        psm[i] = psm[i - 1] + a[i];
    }
    dp[0] = {1, -1};
    for (int i = 0; i < n; ++i) {
        if (i)
            dp[i] = max(dp[i], dp[i - 1]);
        // psm[nt] - psm[i] >= psm[i] - psm[pv]
        int nt = lower_bound(psm, psm + n, psm[i] * 2 - psm[dp[i].second]) - psm;
        pair<int, int> ndp = {dp[i].first + 1, i};
        if (nt < n && ndp > dp[nt])
            dp[nt] = ndp;
        //cout << dp[i].first << ' ' << dp[i].second << "(" << nt << ")" << endl;
    }
    cout << dp[n - 1].first;
}

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 308 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 304 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 212 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 308 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 304 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 312 KB Output is correct
17 Correct 1 ms 308 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 316 KB Output is correct
20 Correct 1 ms 312 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 300 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 316 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 1 ms 308 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 312 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 308 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 304 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 312 KB Output is correct
17 Correct 1 ms 308 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 316 KB Output is correct
20 Correct 1 ms 312 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 300 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 316 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 1 ms 308 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 312 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 2 ms 332 KB Output is correct
33 Correct 2 ms 340 KB Output is correct
34 Correct 2 ms 340 KB Output is correct
35 Correct 2 ms 340 KB Output is correct
36 Correct 2 ms 372 KB Output is correct
37 Correct 2 ms 340 KB Output is correct
38 Correct 2 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 2 ms 340 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 2 ms 340 KB Output is correct
45 Correct 1 ms 340 KB Output is correct

Subtask #4
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 308 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 304 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 312 KB Output is correct
17 Correct 1 ms 308 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 316 KB Output is correct
20 Correct 1 ms 312 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 300 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 316 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 1 ms 308 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 312 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 2 ms 332 KB Output is correct
33 Correct 2 ms 340 KB Output is correct
34 Correct 2 ms 340 KB Output is correct
35 Correct 2 ms 340 KB Output is correct
36 Correct 2 ms 372 KB Output is correct
37 Correct 2 ms 340 KB Output is correct
38 Correct 2 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 2 ms 340 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 2 ms 340 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 28 ms 2668 KB Output is correct
47 Correct 26 ms 2620 KB Output is correct
48 Correct 37 ms 2964 KB Output is correct
49 Correct 46 ms 3116 KB Output is correct
50 Correct 50 ms 3232 KB Output is correct
51 Correct 50 ms 3148 KB Output is correct
52 Correct 25 ms 1724 KB Output is correct
53 Correct 14 ms 1164 KB Output is correct
54 Correct 21 ms 2460 KB Output is correct
55 Correct 48 ms 3240 KB Output is correct
56 Correct 28 ms 2640 KB Output is correct
57 Correct 26 ms 2636 KB Output is correct
58 Correct 33 ms 2688 KB Output is correct
59 Correct 34 ms 2828 KB Output is correct
60 Correct 40 ms 2808 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 308 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 304 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 312 KB Output is correct
17 Correct 1 ms 308 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 316 KB Output is correct
20 Correct 1 ms 312 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 300 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 316 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 1 ms 308 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 312 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 2 ms 332 KB Output is correct
33 Correct 2 ms 340 KB Output is correct
34 Correct 2 ms 340 KB Output is correct
35 Correct 2 ms 340 KB Output is correct
36 Correct 2 ms 372 KB Output is correct
37 Correct 2 ms 340 KB Output is correct
38 Correct 2 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 2 ms 340 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 2 ms 340 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 28 ms 2668 KB Output is correct
47 Correct 26 ms 2620 KB Output is correct
48 Correct 37 ms 2964 KB Output is correct
49 Correct 46 ms 3116 KB Output is correct
50 Correct 50 ms 3232 KB Output is correct
51 Correct 50 ms 3148 KB Output is correct
52 Correct 25 ms 1724 KB Output is correct
53 Correct 14 ms 1164 KB Output is correct
54 Correct 21 ms 2460 KB Output is correct
55 Correct 48 ms 3240 KB Output is correct
56 Correct 28 ms 2640 KB Output is correct
57 Correct 26 ms 2636 KB Output is correct
58 Correct 33 ms 2688 KB Output is correct
59 Correct 34 ms 2828 KB Output is correct
60 Correct 40 ms 2808 KB Output is correct
61 Correct 124 ms 11920 KB Output is correct
62 Correct 123 ms 11960 KB Output is correct
63 Correct 142 ms 12320 KB Output is correct
64 Correct 238 ms 14620 KB Output is correct
65 Correct 243 ms 14884 KB Output is correct
66 Correct 273 ms 14848 KB Output is correct
67 Correct 182 ms 11972 KB Output is correct
68 Correct 95 ms 6092 KB Output is correct
69 Correct 102 ms 11004 KB Output is correct
70 Correct 232 ms 14864 KB Output is correct
71 Correct 125 ms 12080 KB Output is correct
72 Correct 158 ms 12364 KB Output is correct
73 Correct 178 ms 12928 KB Output is correct
74 Correct 176 ms 13400 KB Output is correct
75 Correct 196 ms 13316 KB Output is correct