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Submission #502231

# Submission time Handle Problem Language Result Execution time Memory
502231 2022-01-05T14:58:07 Z JovanB Osumnjičeni (COCI21_osumnjiceni) C++17
110 / 110
 315 ms 28416 KB 
#include <bits/stdc++.h>
using namespace std;

using ll = long long;
using ld = long double;

const int N = 200000;
const int LOG = 20;

set <pair <int, int>> q;

bool intersects(int l, int r){
    if(q.empty()) return 0;
    auto x = q.lower_bound({l, -1});
    if(x != q.end()){
        if(x->first <= r) return 1;
    }
    if(x != q.begin()){
        x--;
        if(x->second >= l) return 1;
    }
    return 0;
}

int sl[N+5], sr[N+5];
int gde[LOG+1][N+5];

int main(){
    ios_base::sync_with_stdio(false), cin.tie(0);
    cout.precision(10);
    cout << fixed;

    int n;
    cin >> n;
    for(int i=1; i<=n; i++){
        cin >> sl[i] >> sr[i];
    }
    int j = n;
    for(int i=n; i>=1; i--){
        while(intersects(sl[i], sr[i])){
            q.erase({sl[j], sr[j]});
            j--;
        }
        q.insert({sl[i], sr[i]});
        gde[0][i] = j + 1;
    }
    gde[0][n+1] = n + 1;
    for(int j=1; j<=LOG; j++){
        for(int i=1; i<=n+1; i++){
            gde[j][i] = gde[j-1][gde[j-1][i]];
        }
    }
    int qrs;
    cin >> qrs;
    while(qrs--){
        int l, r;
        cin >> l >> r;
        r++;
        int res = 0;
        for(int j=LOG; j>=0; j--){
            if(gde[j][l] < r) l = gde[j][l], res += (1 << j);
        }
        res++;
        cout << res << "\n";
    }
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 56 ms 18008 KB Output is correct
2 Correct 65 ms 17604 KB Output is correct
3 Correct 60 ms 17580 KB Output is correct
4 Correct 60 ms 17880 KB Output is correct
5 Correct 67 ms 18596 KB Output is correct
6 Correct 49 ms 16932 KB Output is correct
7 Correct 56 ms 17264 KB Output is correct
8 Correct 62 ms 17408 KB Output is correct
9 Correct 60 ms 17772 KB Output is correct
10 Correct 72 ms 17260 KB Output is correct
11 Correct 143 ms 27364 KB Output is correct
12 Correct 132 ms 25820 KB Output is correct
13 Correct 146 ms 25720 KB Output is correct
14 Correct 145 ms 23524 KB Output is correct
15 Correct 156 ms 21736 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 55 ms 17972 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 844 KB Output is correct
2 Correct 3 ms 880 KB Output is correct
3 Correct 4 ms 844 KB Output is correct
4 Correct 3 ms 912 KB Output is correct
5 Correct 3 ms 852 KB Output is correct
6 Correct 4 ms 844 KB Output is correct
7 Correct 4 ms 896 KB Output is correct
8 Correct 4 ms 856 KB Output is correct
9 Correct 4 ms 844 KB Output is correct
10 Correct 4 ms 844 KB Output is correct
11 Correct 5 ms 1140 KB Output is correct
12 Correct 4 ms 1100 KB Output is correct
13 Correct 4 ms 1100 KB Output is correct
14 Correct 4 ms 972 KB Output is correct
15 Correct 5 ms 888 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 3 ms 876 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 844 KB Output is correct
2 Correct 3 ms 880 KB Output is correct
3 Correct 4 ms 844 KB Output is correct
4 Correct 3 ms 912 KB Output is correct
5 Correct 3 ms 852 KB Output is correct
6 Correct 4 ms 844 KB Output is correct
7 Correct 4 ms 896 KB Output is correct
8 Correct 4 ms 856 KB Output is correct
9 Correct 4 ms 844 KB Output is correct
10 Correct 4 ms 844 KB Output is correct
11 Correct 5 ms 1140 KB Output is correct
12 Correct 4 ms 1100 KB Output is correct
13 Correct 4 ms 1100 KB Output is correct
14 Correct 4 ms 972 KB Output is correct
15 Correct 5 ms 888 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 3 ms 876 KB Output is correct
18 Correct 82 ms 1800 KB Output is correct
19 Correct 68 ms 1660 KB Output is correct
20 Correct 68 ms 1920 KB Output is correct
21 Correct 73 ms 1704 KB Output is correct
22 Correct 72 ms 1896 KB Output is correct
23 Correct 68 ms 1748 KB Output is correct
24 Correct 68 ms 1860 KB Output is correct
25 Correct 69 ms 1880 KB Output is correct
26 Correct 66 ms 1732 KB Output is correct
27 Correct 74 ms 1624 KB Output is correct
28 Correct 50 ms 1548 KB Output is correct
29 Correct 55 ms 1572 KB Output is correct
30 Correct 60 ms 1492 KB Output is correct
31 Correct 54 ms 1396 KB Output is correct
32 Correct 51 ms 1488 KB Output is correct
33 Correct 1 ms 324 KB Output is correct
34 Correct 54 ms 1872 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 61 ms 18744 KB Output is correct
2 Correct 66 ms 18340 KB Output is correct
3 Correct 52 ms 16996 KB Output is correct
4 Correct 56 ms 16848 KB Output is correct
5 Correct 60 ms 17452 KB Output is correct
6 Correct 49 ms 17592 KB Output is correct
7 Correct 52 ms 17088 KB Output is correct
8 Correct 64 ms 18720 KB Output is correct
9 Correct 58 ms 18528 KB Output is correct
10 Correct 70 ms 19572 KB Output is correct
11 Correct 134 ms 25520 KB Output is correct
12 Correct 171 ms 28028 KB Output is correct
13 Correct 140 ms 25540 KB Output is correct
14 Correct 141 ms 21772 KB Output is correct
15 Correct 160 ms 23660 KB Output is correct
16 Correct 1 ms 324 KB Output is correct
17 Correct 50 ms 17252 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 56 ms 18008 KB Output is correct
2 Correct 65 ms 17604 KB Output is correct
3 Correct 60 ms 17580 KB Output is correct
4 Correct 60 ms 17880 KB Output is correct
5 Correct 67 ms 18596 KB Output is correct
6 Correct 49 ms 16932 KB Output is correct
7 Correct 56 ms 17264 KB Output is correct
8 Correct 62 ms 17408 KB Output is correct
9 Correct 60 ms 17772 KB Output is correct
10 Correct 72 ms 17260 KB Output is correct
11 Correct 143 ms 27364 KB Output is correct
12 Correct 132 ms 25820 KB Output is correct
13 Correct 146 ms 25720 KB Output is correct
14 Correct 145 ms 23524 KB Output is correct
15 Correct 156 ms 21736 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 55 ms 17972 KB Output is correct
18 Correct 3 ms 844 KB Output is correct
19 Correct 3 ms 880 KB Output is correct
20 Correct 4 ms 844 KB Output is correct
21 Correct 3 ms 912 KB Output is correct
22 Correct 3 ms 852 KB Output is correct
23 Correct 4 ms 844 KB Output is correct
24 Correct 4 ms 896 KB Output is correct
25 Correct 4 ms 856 KB Output is correct
26 Correct 4 ms 844 KB Output is correct
27 Correct 4 ms 844 KB Output is correct
28 Correct 5 ms 1140 KB Output is correct
29 Correct 4 ms 1100 KB Output is correct
30 Correct 4 ms 1100 KB Output is correct
31 Correct 4 ms 972 KB Output is correct
32 Correct 5 ms 888 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 3 ms 876 KB Output is correct
35 Correct 82 ms 1800 KB Output is correct
36 Correct 68 ms 1660 KB Output is correct
37 Correct 68 ms 1920 KB Output is correct
38 Correct 73 ms 1704 KB Output is correct
39 Correct 72 ms 1896 KB Output is correct
40 Correct 68 ms 1748 KB Output is correct
41 Correct 68 ms 1860 KB Output is correct
42 Correct 69 ms 1880 KB Output is correct
43 Correct 66 ms 1732 KB Output is correct
44 Correct 74 ms 1624 KB Output is correct
45 Correct 50 ms 1548 KB Output is correct
46 Correct 55 ms 1572 KB Output is correct
47 Correct 60 ms 1492 KB Output is correct
48 Correct 54 ms 1396 KB Output is correct
49 Correct 51 ms 1488 KB Output is correct
50 Correct 1 ms 324 KB Output is correct
51 Correct 54 ms 1872 KB Output is correct
52 Correct 61 ms 18744 KB Output is correct
53 Correct 66 ms 18340 KB Output is correct
54 Correct 52 ms 16996 KB Output is correct
55 Correct 56 ms 16848 KB Output is correct
56 Correct 60 ms 17452 KB Output is correct
57 Correct 49 ms 17592 KB Output is correct
58 Correct 52 ms 17088 KB Output is correct
59 Correct 64 ms 18720 KB Output is correct
60 Correct 58 ms 18528 KB Output is correct
61 Correct 70 ms 19572 KB Output is correct
62 Correct 134 ms 25520 KB Output is correct
63 Correct 171 ms 28028 KB Output is correct
64 Correct 140 ms 25540 KB Output is correct
65 Correct 141 ms 21772 KB Output is correct
66 Correct 160 ms 23660 KB Output is correct
67 Correct 1 ms 324 KB Output is correct
68 Correct 50 ms 17252 KB Output is correct
69 Correct 305 ms 18764 KB Output is correct
70 Correct 302 ms 20344 KB Output is correct
71 Correct 261 ms 20716 KB Output is correct
72 Correct 257 ms 20448 KB Output is correct
73 Correct 288 ms 18812 KB Output is correct
74 Correct 306 ms 19756 KB Output is correct
75 Correct 295 ms 19756 KB Output is correct
76 Correct 299 ms 22628 KB Output is correct
77 Correct 271 ms 19044 KB Output is correct
78 Correct 315 ms 18672 KB Output is correct
79 Correct 265 ms 28416 KB Output is correct
80 Correct 255 ms 26392 KB Output is correct
81 Correct 246 ms 26112 KB Output is correct
82 Correct 241 ms 22720 KB Output is correct
83 Correct 248 ms 21848 KB Output is correct
84 Correct 1 ms 332 KB Output is correct
85 Correct 144 ms 18740 KB Output is correct