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Submission #496187

# Submission time Handle Problem Language Result Execution time Memory
496187 2021-12-21T01:01:16 Z model_code Osumnjičeni (COCI21_osumnjiceni) C++17
110 / 110
 321 ms 25464 KB 
#include<bits/stdc++.h>

using namespace std;

typedef long long llint;
typedef pair <int, int> pi;

const int MAXN = 200005;
const int LOG = 18;

int n, q;
int lef[MAXN], rig[MAXN];
int par[MAXN][LOG];
set <pi> st;

bool can_insert (int ind) {
    if (st.empty()) return 1;

    auto it = st.lower_bound({lef[ind], 0});
    int nxt = it -> second;
    if (lef[ind] <= lef[nxt] && lef[nxt] <= rig[ind]) return 0;

    if (it != st.begin()) {
        it--;
        int prv = it -> second;
        if (lef[prv] <= lef[ind] && lef[ind] <= rig[prv]) return 0;
    }

    return 1;
}

void precompute () {
    int lim = 0;
    for (int i = 1; i <= n; i++) {
        if (lim < i) {
            st.clear();
            lim = i;
            st.insert({lef[i], i});
        }

        while (lim + 1 <= n && can_insert(lim + 1)) {
            lim++;
            st.insert({lef[lim], lim});
        }
        par[i][0] = lim + 1;

        st.erase({lef[i], i});
    }
    par[n + 1][0] = n + 1;

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

int upit (int a, int b) {
    int res = 0;
    for (int i = LOG - 1; i >= 0; i--) {
        if (par[a][i] <= b) {
            a = par[a][i];
            res += 1 << i;
        }
    }
    return res + 1;
}

int main () {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin >> n;
    for (int i = 1; i <= n; i++) {
        cin >> lef[i] >> rig[i];
    }
    precompute();
    cin >> q;
    for (int i = 1; i <= q; i++) {
        int a, b;
        cin >> a >> b;
        cout << upit(a, b) << '\n';
    }
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 86 ms 15256 KB Output is correct
2 Correct 85 ms 14956 KB Output is correct
3 Correct 76 ms 15072 KB Output is correct
4 Correct 77 ms 15248 KB Output is correct
5 Correct 82 ms 15828 KB Output is correct
6 Correct 95 ms 14364 KB Output is correct
7 Correct 78 ms 14856 KB Output is correct
8 Correct 79 ms 14884 KB Output is correct
9 Correct 104 ms 15300 KB Output is correct
10 Correct 102 ms 14776 KB Output is correct
11 Correct 247 ms 24680 KB Output is correct
12 Correct 238 ms 23308 KB Output is correct
13 Correct 227 ms 23120 KB Output is correct
14 Correct 183 ms 20740 KB Output is correct
15 Correct 189 ms 19068 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 75 ms 15508 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 716 KB Output is correct
2 Correct 4 ms 716 KB Output is correct
3 Correct 3 ms 724 KB Output is correct
4 Correct 3 ms 716 KB Output is correct
5 Correct 4 ms 716 KB Output is correct
6 Correct 5 ms 716 KB Output is correct
7 Correct 4 ms 716 KB Output is correct
8 Correct 5 ms 716 KB Output is correct
9 Correct 3 ms 716 KB Output is correct
10 Correct 3 ms 716 KB Output is correct
11 Correct 4 ms 972 KB Output is correct
12 Correct 4 ms 844 KB Output is correct
13 Correct 5 ms 844 KB Output is correct
14 Correct 4 ms 824 KB Output is correct
15 Correct 4 ms 716 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 3 ms 716 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 716 KB Output is correct
2 Correct 4 ms 716 KB Output is correct
3 Correct 3 ms 724 KB Output is correct
4 Correct 3 ms 716 KB Output is correct
5 Correct 4 ms 716 KB Output is correct
6 Correct 5 ms 716 KB Output is correct
7 Correct 4 ms 716 KB Output is correct
8 Correct 5 ms 716 KB Output is correct
9 Correct 3 ms 716 KB Output is correct
10 Correct 3 ms 716 KB Output is correct
11 Correct 4 ms 972 KB Output is correct
12 Correct 4 ms 844 KB Output is correct
13 Correct 5 ms 844 KB Output is correct
14 Correct 4 ms 824 KB Output is correct
15 Correct 4 ms 716 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 3 ms 716 KB Output is correct
18 Correct 64 ms 1496 KB Output is correct
19 Correct 58 ms 1404 KB Output is correct
20 Correct 63 ms 1496 KB Output is correct
21 Correct 57 ms 1440 KB Output is correct
22 Correct 66 ms 1524 KB Output is correct
23 Correct 66 ms 1524 KB Output is correct
24 Correct 61 ms 1468 KB Output is correct
25 Correct 63 ms 1536 KB Output is correct
26 Correct 58 ms 1452 KB Output is correct
27 Correct 68 ms 1292 KB Output is correct
28 Correct 62 ms 1272 KB Output is correct
29 Correct 50 ms 1276 KB Output is correct
30 Correct 45 ms 1224 KB Output is correct
31 Correct 50 ms 1096 KB Output is correct
32 Correct 58 ms 1136 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 71 ms 1580 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 84 ms 15940 KB Output is correct
2 Correct 81 ms 15556 KB Output is correct
3 Correct 77 ms 14584 KB Output is correct
4 Correct 71 ms 14332 KB Output is correct
5 Correct 80 ms 14788 KB Output is correct
6 Correct 71 ms 14512 KB Output is correct
7 Correct 76 ms 14420 KB Output is correct
8 Correct 75 ms 14628 KB Output is correct
9 Correct 82 ms 14364 KB Output is correct
10 Correct 103 ms 15648 KB Output is correct
11 Correct 215 ms 23184 KB Output is correct
12 Correct 229 ms 25244 KB Output is correct
13 Correct 217 ms 22992 KB Output is correct
14 Correct 211 ms 19256 KB Output is correct
15 Correct 189 ms 20932 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 68 ms 14692 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 86 ms 15256 KB Output is correct
2 Correct 85 ms 14956 KB Output is correct
3 Correct 76 ms 15072 KB Output is correct
4 Correct 77 ms 15248 KB Output is correct
5 Correct 82 ms 15828 KB Output is correct
6 Correct 95 ms 14364 KB Output is correct
7 Correct 78 ms 14856 KB Output is correct
8 Correct 79 ms 14884 KB Output is correct
9 Correct 104 ms 15300 KB Output is correct
10 Correct 102 ms 14776 KB Output is correct
11 Correct 247 ms 24680 KB Output is correct
12 Correct 238 ms 23308 KB Output is correct
13 Correct 227 ms 23120 KB Output is correct
14 Correct 183 ms 20740 KB Output is correct
15 Correct 189 ms 19068 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 75 ms 15508 KB Output is correct
18 Correct 6 ms 716 KB Output is correct
19 Correct 4 ms 716 KB Output is correct
20 Correct 3 ms 724 KB Output is correct
21 Correct 3 ms 716 KB Output is correct
22 Correct 4 ms 716 KB Output is correct
23 Correct 5 ms 716 KB Output is correct
24 Correct 4 ms 716 KB Output is correct
25 Correct 5 ms 716 KB Output is correct
26 Correct 3 ms 716 KB Output is correct
27 Correct 3 ms 716 KB Output is correct
28 Correct 4 ms 972 KB Output is correct
29 Correct 4 ms 844 KB Output is correct
30 Correct 5 ms 844 KB Output is correct
31 Correct 4 ms 824 KB Output is correct
32 Correct 4 ms 716 KB Output is correct
33 Correct 0 ms 204 KB Output is correct
34 Correct 3 ms 716 KB Output is correct
35 Correct 64 ms 1496 KB Output is correct
36 Correct 58 ms 1404 KB Output is correct
37 Correct 63 ms 1496 KB Output is correct
38 Correct 57 ms 1440 KB Output is correct
39 Correct 66 ms 1524 KB Output is correct
40 Correct 66 ms 1524 KB Output is correct
41 Correct 61 ms 1468 KB Output is correct
42 Correct 63 ms 1536 KB Output is correct
43 Correct 58 ms 1452 KB Output is correct
44 Correct 68 ms 1292 KB Output is correct
45 Correct 62 ms 1272 KB Output is correct
46 Correct 50 ms 1276 KB Output is correct
47 Correct 45 ms 1224 KB Output is correct
48 Correct 50 ms 1096 KB Output is correct
49 Correct 58 ms 1136 KB Output is correct
50 Correct 1 ms 332 KB Output is correct
51 Correct 71 ms 1580 KB Output is correct
52 Correct 84 ms 15940 KB Output is correct
53 Correct 81 ms 15556 KB Output is correct
54 Correct 77 ms 14584 KB Output is correct
55 Correct 71 ms 14332 KB Output is correct
56 Correct 80 ms 14788 KB Output is correct
57 Correct 71 ms 14512 KB Output is correct
58 Correct 76 ms 14420 KB Output is correct
59 Correct 75 ms 14628 KB Output is correct
60 Correct 82 ms 14364 KB Output is correct
61 Correct 103 ms 15648 KB Output is correct
62 Correct 215 ms 23184 KB Output is correct
63 Correct 229 ms 25244 KB Output is correct
64 Correct 217 ms 22992 KB Output is correct
65 Correct 211 ms 19256 KB Output is correct
66 Correct 189 ms 20932 KB Output is correct
67 Correct 0 ms 344 KB Output is correct
68 Correct 68 ms 14692 KB Output is correct
69 Correct 285 ms 16036 KB Output is correct
70 Correct 258 ms 16812 KB Output is correct
71 Correct 230 ms 15496 KB Output is correct
72 Correct 316 ms 16308 KB Output is correct
73 Correct 248 ms 16028 KB Output is correct
74 Correct 272 ms 16964 KB Output is correct
75 Correct 303 ms 15696 KB Output is correct
76 Correct 298 ms 16920 KB Output is correct
77 Correct 244 ms 15652 KB Output is correct
78 Correct 256 ms 15864 KB Output is correct
79 Correct 292 ms 25464 KB Output is correct
80 Correct 274 ms 23652 KB Output is correct
81 Correct 321 ms 23412 KB Output is correct
82 Correct 258 ms 19900 KB Output is correct
83 Correct 227 ms 19136 KB Output is correct
84 Correct 1 ms 204 KB Output is correct
85 Correct 134 ms 15996 KB Output is correct