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Submission #653018

# Submission time Handle Problem Language Result Execution time Memory
653018 2022-10-25T12:16:39 Z vladutpiele Bigger segments (IZhO19_segments) C++17
100 / 100
 208 ms 16008 KB 
#include <bits/stdc++.h>

#define int long long

using namespace std;

const int nmax = 500000;

int n;
int v[nmax + 5], sume[nmax + 5];

struct elem
{
    int maxSeg; /// in cate segmente impart prefixul [1 ... i]
    int maxPrv; /// capatul stanga al ultimului segment
};

elem dp[nmax + 5];

void update(int a,int b)
{
    if(dp[a].maxSeg < dp[b].maxSeg)
    {
        dp[a] = dp[b];
    }
    else
    {
        if(dp[a].maxSeg == dp[b].maxSeg && dp[a].maxPrv < dp[b].maxPrv)
        {
            dp[a] = dp[b];
        }
    }
}

signed main()
{
    cin >> n;
    for(int i = 1; i <= n; i ++)
    {
        cin >> v[i];
        sume[i] = sume[i - 1] + v[i];
    }
    dp[1].maxSeg = 1;
    dp[1].maxPrv = 1;
    for(int i = 1; i <= n; i ++)
    {
        update(i, i - 1);
        int st = i + 1, dr = n;
        int pozmin = n + 1;
        while(st <= dr)
        {
            int mid = (st + dr) >> 1;
            int S = sume[mid] - sume[i];
            if(S >= sume[i] - sume[dp[i].maxPrv - 1])
            {
                pozmin = mid;
                dr = mid - 1;
            }
            else
            {
                st = mid + 1;
            }
        }
        dp[pozmin].maxSeg = dp[i].maxSeg + 1;
        dp[pozmin].maxPrv = i + 1;
        /*
        if(pozmin <= n)
        {
            dp[n + 1].maxSeg = dp[i].maxSeg + 1;
            dp[n + 1].maxPrv = i + 1;
            update(pozmin, n + 1);
        }
        */
    }
    cout << dp[n].maxSeg << '\n';
    return 0;
}

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 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 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 244 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 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 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 244 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 2 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 2 ms 340 KB Output is correct
36 Correct 2 ms 340 KB Output is correct
37 Correct 2 ms 340 KB Output is correct
38 Correct 1 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 2 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 1 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 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 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 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 244 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 2 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 2 ms 340 KB Output is correct
36 Correct 2 ms 340 KB Output is correct
37 Correct 2 ms 340 KB Output is correct
38 Correct 1 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 2 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 22 ms 3420 KB Output is correct
47 Correct 27 ms 3412 KB Output is correct
48 Correct 35 ms 3336 KB Output is correct
49 Correct 37 ms 3360 KB Output is correct
50 Correct 47 ms 3396 KB Output is correct
51 Correct 48 ms 3488 KB Output is correct
52 Correct 20 ms 1820 KB Output is correct
53 Correct 13 ms 1236 KB Output is correct
54 Correct 18 ms 3396 KB Output is correct
55 Correct 41 ms 3328 KB Output is correct
56 Correct 25 ms 3372 KB Output is correct
57 Correct 23 ms 3368 KB Output is correct
58 Correct 26 ms 3412 KB Output is correct
59 Correct 30 ms 3408 KB Output is correct
60 Correct 31 ms 3412 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 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 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 244 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 2 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 2 ms 340 KB Output is correct
36 Correct 2 ms 340 KB Output is correct
37 Correct 2 ms 340 KB Output is correct
38 Correct 1 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 2 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 22 ms 3420 KB Output is correct
47 Correct 27 ms 3412 KB Output is correct
48 Correct 35 ms 3336 KB Output is correct
49 Correct 37 ms 3360 KB Output is correct
50 Correct 47 ms 3396 KB Output is correct
51 Correct 48 ms 3488 KB Output is correct
52 Correct 20 ms 1820 KB Output is correct
53 Correct 13 ms 1236 KB Output is correct
54 Correct 18 ms 3396 KB Output is correct
55 Correct 41 ms 3328 KB Output is correct
56 Correct 25 ms 3372 KB Output is correct
57 Correct 23 ms 3368 KB Output is correct
58 Correct 26 ms 3412 KB Output is correct
59 Correct 30 ms 3408 KB Output is correct
60 Correct 31 ms 3412 KB Output is correct
61 Correct 121 ms 15824 KB Output is correct
62 Correct 117 ms 15948 KB Output is correct
63 Correct 131 ms 15820 KB Output is correct
64 Correct 202 ms 15932 KB Output is correct
65 Correct 201 ms 15816 KB Output is correct
66 Correct 208 ms 15932 KB Output is correct
67 Correct 180 ms 12756 KB Output is correct
68 Correct 80 ms 6568 KB Output is correct
69 Correct 87 ms 15992 KB Output is correct
70 Correct 192 ms 15876 KB Output is correct
71 Correct 111 ms 15904 KB Output is correct
72 Correct 141 ms 15900 KB Output is correct
73 Correct 140 ms 16008 KB Output is correct
74 Correct 153 ms 15824 KB Output is correct
75 Correct 199 ms 15820 KB Output is correct