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Submission #948151

# Submission time Handle Problem Language Result Execution time Memory
948151 2024-03-17T16:47:04 Z blackavar Osumnjičeni (COCI21_osumnjiceni) C++14
110 / 110
 283 ms 51796 KB 
#include <bits/stdc++.h>
using namespace std;

struct doan{
    long long l, r;
};

long long n;
doan arr[1000005];
set <pair<long long, long long>> pi;
long long st[200005][18];

bool canInsert(long long pos) {
    if (pi.empty()) return true;

    auto it = pi.lower_bound({arr[pos].l, 1e18});
    int nxt = it -> second;
    if (arr[pos].l <= arr[nxt].l && arr[nxt].l <= arr[pos].r) return false;

    if (it != pi.begin()) {
        it--;
        int prv = it -> second;
        if (arr[prv].l <= arr[pos].l && arr[pos].l <= arr[prv].r) return false;
    }
    return true;
}

void preprocess() {
    long long lim = 0;
    for (int i = 1; i <= n; i++) {
        if (lim < i) {
            pi.clear();
            lim = i;
            pi.insert({arr[i].l, i});
        }
        while (lim + 1 <= n && canInsert(lim + 1)) {
            lim++;
            pi.insert({arr[lim].l, lim});
        }
        st[i][0] = lim + 1;
        pi.erase({arr[i].l, i});
    }
    st[n + 1][0] = n + 1;

    for (int i = 1; i < 18; i++) {
        for (int j = 1; j <= n + 1; j++) {
            st[j][i] = st[st[j][i - 1]][i - 1];
        }
    }
}

long long get(long long l, long long r) {
    long long res = 1;
    for (int i = 17; i >= 0; i--) {
        if (st[l][i] <= r) {
            l = st[l][i];
            res += 1 << i;
        }
    }
    return res;
}

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin >> n;
    for (int i = 1; i <= n; i++) {
        cin >> arr[i].l >> arr[i].r;
    }
    long long t;
    cin >> t;
    preprocess();
    while (t--) {
        long long p, q;
        cin >> p >> q;
        cout << get(p, q) << "\n";
    }
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 72 ms 36948 KB Output is correct
2 Correct 65 ms 36864 KB Output is correct
3 Correct 74 ms 36928 KB Output is correct
4 Correct 67 ms 36948 KB Output is correct
5 Correct 70 ms 37284 KB Output is correct
6 Correct 62 ms 36992 KB Output is correct
7 Correct 61 ms 36948 KB Output is correct
8 Correct 71 ms 37064 KB Output is correct
9 Correct 68 ms 37096 KB Output is correct
10 Correct 71 ms 36692 KB Output is correct
11 Correct 180 ms 48724 KB Output is correct
12 Correct 174 ms 48044 KB Output is correct
13 Correct 167 ms 47700 KB Output is correct
14 Correct 191 ms 43604 KB Output is correct
15 Correct 148 ms 41868 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 62 ms 37236 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4700 KB Output is correct
2 Correct 3 ms 4700 KB Output is correct
3 Correct 3 ms 4884 KB Output is correct
4 Correct 3 ms 4700 KB Output is correct
5 Correct 3 ms 4700 KB Output is correct
6 Correct 3 ms 4700 KB Output is correct
7 Correct 3 ms 4700 KB Output is correct
8 Correct 3 ms 4700 KB Output is correct
9 Correct 5 ms 4696 KB Output is correct
10 Correct 3 ms 4700 KB Output is correct
11 Correct 4 ms 4956 KB Output is correct
12 Correct 4 ms 4956 KB Output is correct
13 Correct 4 ms 4956 KB Output is correct
14 Correct 4 ms 4956 KB Output is correct
15 Correct 4 ms 4956 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 3 ms 4700 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4700 KB Output is correct
2 Correct 3 ms 4700 KB Output is correct
3 Correct 3 ms 4884 KB Output is correct
4 Correct 3 ms 4700 KB Output is correct
5 Correct 3 ms 4700 KB Output is correct
6 Correct 3 ms 4700 KB Output is correct
7 Correct 3 ms 4700 KB Output is correct
8 Correct 3 ms 4700 KB Output is correct
9 Correct 5 ms 4696 KB Output is correct
10 Correct 3 ms 4700 KB Output is correct
11 Correct 4 ms 4956 KB Output is correct
12 Correct 4 ms 4956 KB Output is correct
13 Correct 4 ms 4956 KB Output is correct
14 Correct 4 ms 4956 KB Output is correct
15 Correct 4 ms 4956 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 3 ms 4700 KB Output is correct
18 Correct 57 ms 7504 KB Output is correct
19 Correct 51 ms 7248 KB Output is correct
20 Correct 58 ms 7372 KB Output is correct
21 Correct 66 ms 7284 KB Output is correct
22 Correct 68 ms 7508 KB Output is correct
23 Correct 54 ms 7100 KB Output is correct
24 Correct 54 ms 7252 KB Output is correct
25 Correct 59 ms 7432 KB Output is correct
26 Correct 52 ms 7396 KB Output is correct
27 Correct 60 ms 7248 KB Output is correct
28 Correct 36 ms 7004 KB Output is correct
29 Correct 38 ms 7252 KB Output is correct
30 Correct 41 ms 7284 KB Output is correct
31 Correct 40 ms 6904 KB Output is correct
32 Correct 39 ms 6996 KB Output is correct
33 Correct 1 ms 2396 KB Output is correct
34 Correct 39 ms 7020 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 74 ms 37300 KB Output is correct
2 Correct 73 ms 37180 KB Output is correct
3 Correct 65 ms 36932 KB Output is correct
4 Correct 64 ms 36916 KB Output is correct
5 Correct 63 ms 37048 KB Output is correct
6 Correct 60 ms 36924 KB Output is correct
7 Correct 60 ms 36948 KB Output is correct
8 Correct 65 ms 36908 KB Output is correct
9 Correct 69 ms 36768 KB Output is correct
10 Correct 76 ms 36948 KB Output is correct
11 Correct 178 ms 47792 KB Output is correct
12 Correct 194 ms 49216 KB Output is correct
13 Correct 176 ms 47700 KB Output is correct
14 Correct 155 ms 42208 KB Output is correct
15 Correct 172 ms 43656 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 62 ms 37072 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 72 ms 36948 KB Output is correct
2 Correct 65 ms 36864 KB Output is correct
3 Correct 74 ms 36928 KB Output is correct
4 Correct 67 ms 36948 KB Output is correct
5 Correct 70 ms 37284 KB Output is correct
6 Correct 62 ms 36992 KB Output is correct
7 Correct 61 ms 36948 KB Output is correct
8 Correct 71 ms 37064 KB Output is correct
9 Correct 68 ms 37096 KB Output is correct
10 Correct 71 ms 36692 KB Output is correct
11 Correct 180 ms 48724 KB Output is correct
12 Correct 174 ms 48044 KB Output is correct
13 Correct 167 ms 47700 KB Output is correct
14 Correct 191 ms 43604 KB Output is correct
15 Correct 148 ms 41868 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 62 ms 37236 KB Output is correct
18 Correct 3 ms 4700 KB Output is correct
19 Correct 3 ms 4700 KB Output is correct
20 Correct 3 ms 4884 KB Output is correct
21 Correct 3 ms 4700 KB Output is correct
22 Correct 3 ms 4700 KB Output is correct
23 Correct 3 ms 4700 KB Output is correct
24 Correct 3 ms 4700 KB Output is correct
25 Correct 3 ms 4700 KB Output is correct
26 Correct 5 ms 4696 KB Output is correct
27 Correct 3 ms 4700 KB Output is correct
28 Correct 4 ms 4956 KB Output is correct
29 Correct 4 ms 4956 KB Output is correct
30 Correct 4 ms 4956 KB Output is correct
31 Correct 4 ms 4956 KB Output is correct
32 Correct 4 ms 4956 KB Output is correct
33 Correct 1 ms 2396 KB Output is correct
34 Correct 3 ms 4700 KB Output is correct
35 Correct 57 ms 7504 KB Output is correct
36 Correct 51 ms 7248 KB Output is correct
37 Correct 58 ms 7372 KB Output is correct
38 Correct 66 ms 7284 KB Output is correct
39 Correct 68 ms 7508 KB Output is correct
40 Correct 54 ms 7100 KB Output is correct
41 Correct 54 ms 7252 KB Output is correct
42 Correct 59 ms 7432 KB Output is correct
43 Correct 52 ms 7396 KB Output is correct
44 Correct 60 ms 7248 KB Output is correct
45 Correct 36 ms 7004 KB Output is correct
46 Correct 38 ms 7252 KB Output is correct
47 Correct 41 ms 7284 KB Output is correct
48 Correct 40 ms 6904 KB Output is correct
49 Correct 39 ms 6996 KB Output is correct
50 Correct 1 ms 2396 KB Output is correct
51 Correct 39 ms 7020 KB Output is correct
52 Correct 74 ms 37300 KB Output is correct
53 Correct 73 ms 37180 KB Output is correct
54 Correct 65 ms 36932 KB Output is correct
55 Correct 64 ms 36916 KB Output is correct
56 Correct 63 ms 37048 KB Output is correct
57 Correct 60 ms 36924 KB Output is correct
58 Correct 60 ms 36948 KB Output is correct
59 Correct 65 ms 36908 KB Output is correct
60 Correct 69 ms 36768 KB Output is correct
61 Correct 76 ms 36948 KB Output is correct
62 Correct 178 ms 47792 KB Output is correct
63 Correct 194 ms 49216 KB Output is correct
64 Correct 176 ms 47700 KB Output is correct
65 Correct 155 ms 42208 KB Output is correct
66 Correct 172 ms 43656 KB Output is correct
67 Correct 1 ms 2396 KB Output is correct
68 Correct 62 ms 37072 KB Output is correct
69 Correct 283 ms 40504 KB Output is correct
70 Correct 231 ms 40544 KB Output is correct
71 Correct 212 ms 40132 KB Output is correct
72 Correct 233 ms 40348 KB Output is correct
73 Correct 212 ms 40532 KB Output is correct
74 Correct 236 ms 40832 KB Output is correct
75 Correct 274 ms 40764 KB Output is correct
76 Correct 263 ms 40812 KB Output is correct
77 Correct 207 ms 40260 KB Output is correct
78 Correct 214 ms 40568 KB Output is correct
79 Correct 271 ms 51796 KB Output is correct
80 Correct 208 ms 50512 KB Output is correct
81 Correct 220 ms 50420 KB Output is correct
82 Correct 211 ms 44884 KB Output is correct
83 Correct 204 ms 44384 KB Output is correct
84 Correct 1 ms 2396 KB Output is correct
85 Correct 116 ms 40516 KB Output is correct