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Submission #724596

# Submission time Handle Problem Language Result Execution time Memory
724596 2023-04-15T15:44:24 Z TheSahib Osumnjičeni (COCI21_osumnjiceni) C++17
110 / 110
 694 ms 32892 KB 
#include <bits/stdc++.h>
 
#pragma GCC optimize("O3")
 
#define ll long long
#define oo 1e9 + 9
#define pii pair<int, int>
 
using namespace std;

const int MAX = 2e5 + 5;

int n, q;
pii arr[MAX];

int st[20][MAX];

bool checkRange(pii a, pii b){
    return a.first <= b.second && a.second >= b.first;
}

void calcMaxR(){
    set<pii> s;
    int l = 0;
    for (int i = 0; i < n; i++)
    {
        while(!s.empty()){
            auto itr1 = s.upper_bound({arr[i].first, oo});
            auto itr2 = s.upper_bound({arr[i].second, oo});
            if(itr1 != s.begin()) --itr1;
            if(itr2 != s.begin()) --itr2;
            if((checkRange(arr[i], (*itr1))) || checkRange(arr[i], (*itr2))){
                st[0][l] = i;
                s.erase(arr[l]);
                ++l;
            }
            else{
                break;
            }
        }
        s.insert(arr[i]);
    }
    
    for (int j = l; j <= n; j++)
    {
        st[0][j] = n;
    }
}


void build(){
    for (int j = 1; j < 20; j++)
    {
        for (int i = 0; i <= n; i++)
        {
            st[j][i] = st[j - 1][st[j - 1][i]];
        }
    }
}

int ask(int l, int r){
    int ans = 1;
    for(int j = 19; j >= 0; --j){
        if(st[j][l] <= r){
            l = st[j][l];
            ans += (1 << j);
        }
    }
    return ans;
}

int main(){
    cin >> n;
    for (int i = 0; i < n; i++)
    {
        cin >> arr[i].first >> arr[i].second;
    }
    calcMaxR();
    build();

    cin >> q;
    while(q--){
        int l, r; cin >> l >> r;
        --l; --r;
        cout << ask(l, r) << '\n';
    }
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 154 ms 16804 KB Output is correct
2 Correct 155 ms 16540 KB Output is correct
3 Correct 154 ms 16560 KB Output is correct
4 Correct 155 ms 16796 KB Output is correct
5 Correct 166 ms 17484 KB Output is correct
6 Correct 151 ms 16032 KB Output is correct
7 Correct 150 ms 16256 KB Output is correct
8 Correct 151 ms 16376 KB Output is correct
9 Correct 163 ms 16784 KB Output is correct
10 Correct 178 ms 16252 KB Output is correct
11 Correct 295 ms 26360 KB Output is correct
12 Correct 258 ms 27724 KB Output is correct
13 Correct 237 ms 27736 KB Output is correct
14 Correct 266 ms 25548 KB Output is correct
15 Correct 248 ms 23836 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 156 ms 20756 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 864 KB Output is correct
2 Correct 13 ms 828 KB Output is correct
3 Correct 12 ms 712 KB Output is correct
4 Correct 13 ms 852 KB Output is correct
5 Correct 12 ms 728 KB Output is correct
6 Correct 19 ms 852 KB Output is correct
7 Correct 16 ms 832 KB Output is correct
8 Correct 14 ms 848 KB Output is correct
9 Correct 13 ms 724 KB Output is correct
10 Correct 16 ms 832 KB Output is correct
11 Correct 14 ms 1080 KB Output is correct
12 Correct 12 ms 980 KB Output is correct
13 Correct 14 ms 1048 KB Output is correct
14 Correct 14 ms 944 KB Output is correct
15 Correct 14 ms 852 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 13 ms 964 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 864 KB Output is correct
2 Correct 13 ms 828 KB Output is correct
3 Correct 12 ms 712 KB Output is correct
4 Correct 13 ms 852 KB Output is correct
5 Correct 12 ms 728 KB Output is correct
6 Correct 19 ms 852 KB Output is correct
7 Correct 16 ms 832 KB Output is correct
8 Correct 14 ms 848 KB Output is correct
9 Correct 13 ms 724 KB Output is correct
10 Correct 16 ms 832 KB Output is correct
11 Correct 14 ms 1080 KB Output is correct
12 Correct 12 ms 980 KB Output is correct
13 Correct 14 ms 1048 KB Output is correct
14 Correct 14 ms 944 KB Output is correct
15 Correct 14 ms 852 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 13 ms 964 KB Output is correct
18 Correct 367 ms 1636 KB Output is correct
19 Correct 343 ms 1668 KB Output is correct
20 Correct 372 ms 1692 KB Output is correct
21 Correct 334 ms 1720 KB Output is correct
22 Correct 345 ms 1680 KB Output is correct
23 Correct 343 ms 1552 KB Output is correct
24 Correct 359 ms 1612 KB Output is correct
25 Correct 377 ms 1612 KB Output is correct
26 Correct 349 ms 1676 KB Output is correct
27 Correct 336 ms 1748 KB Output is correct
28 Correct 324 ms 1308 KB Output is correct
29 Correct 349 ms 1356 KB Output is correct
30 Correct 334 ms 1356 KB Output is correct
31 Correct 328 ms 1180 KB Output is correct
32 Correct 333 ms 1276 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 334 ms 1888 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 159 ms 17488 KB Output is correct
2 Correct 177 ms 17296 KB Output is correct
3 Correct 152 ms 16036 KB Output is correct
4 Correct 143 ms 15884 KB Output is correct
5 Correct 146 ms 16336 KB Output is correct
6 Correct 150 ms 16096 KB Output is correct
7 Correct 147 ms 15864 KB Output is correct
8 Correct 152 ms 16108 KB Output is correct
9 Correct 159 ms 15908 KB Output is correct
10 Correct 175 ms 17192 KB Output is correct
11 Correct 243 ms 24628 KB Output is correct
12 Correct 264 ms 30128 KB Output is correct
13 Correct 267 ms 27504 KB Output is correct
14 Correct 281 ms 23852 KB Output is correct
15 Correct 286 ms 25940 KB Output is correct
16 Correct 1 ms 308 KB Output is correct
17 Correct 152 ms 19916 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 154 ms 16804 KB Output is correct
2 Correct 155 ms 16540 KB Output is correct
3 Correct 154 ms 16560 KB Output is correct
4 Correct 155 ms 16796 KB Output is correct
5 Correct 166 ms 17484 KB Output is correct
6 Correct 151 ms 16032 KB Output is correct
7 Correct 150 ms 16256 KB Output is correct
8 Correct 151 ms 16376 KB Output is correct
9 Correct 163 ms 16784 KB Output is correct
10 Correct 178 ms 16252 KB Output is correct
11 Correct 295 ms 26360 KB Output is correct
12 Correct 258 ms 27724 KB Output is correct
13 Correct 237 ms 27736 KB Output is correct
14 Correct 266 ms 25548 KB Output is correct
15 Correct 248 ms 23836 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 156 ms 20756 KB Output is correct
18 Correct 14 ms 864 KB Output is correct
19 Correct 13 ms 828 KB Output is correct
20 Correct 12 ms 712 KB Output is correct
21 Correct 13 ms 852 KB Output is correct
22 Correct 12 ms 728 KB Output is correct
23 Correct 19 ms 852 KB Output is correct
24 Correct 16 ms 832 KB Output is correct
25 Correct 14 ms 848 KB Output is correct
26 Correct 13 ms 724 KB Output is correct
27 Correct 16 ms 832 KB Output is correct
28 Correct 14 ms 1080 KB Output is correct
29 Correct 12 ms 980 KB Output is correct
30 Correct 14 ms 1048 KB Output is correct
31 Correct 14 ms 944 KB Output is correct
32 Correct 14 ms 852 KB Output is correct
33 Correct 0 ms 340 KB Output is correct
34 Correct 13 ms 964 KB Output is correct
35 Correct 367 ms 1636 KB Output is correct
36 Correct 343 ms 1668 KB Output is correct
37 Correct 372 ms 1692 KB Output is correct
38 Correct 334 ms 1720 KB Output is correct
39 Correct 345 ms 1680 KB Output is correct
40 Correct 343 ms 1552 KB Output is correct
41 Correct 359 ms 1612 KB Output is correct
42 Correct 377 ms 1612 KB Output is correct
43 Correct 349 ms 1676 KB Output is correct
44 Correct 336 ms 1748 KB Output is correct
45 Correct 324 ms 1308 KB Output is correct
46 Correct 349 ms 1356 KB Output is correct
47 Correct 334 ms 1356 KB Output is correct
48 Correct 328 ms 1180 KB Output is correct
49 Correct 333 ms 1276 KB Output is correct
50 Correct 1 ms 340 KB Output is correct
51 Correct 334 ms 1888 KB Output is correct
52 Correct 159 ms 17488 KB Output is correct
53 Correct 177 ms 17296 KB Output is correct
54 Correct 152 ms 16036 KB Output is correct
55 Correct 143 ms 15884 KB Output is correct
56 Correct 146 ms 16336 KB Output is correct
57 Correct 150 ms 16096 KB Output is correct
58 Correct 147 ms 15864 KB Output is correct
59 Correct 152 ms 16108 KB Output is correct
60 Correct 159 ms 15908 KB Output is correct
61 Correct 175 ms 17192 KB Output is correct
62 Correct 243 ms 24628 KB Output is correct
63 Correct 264 ms 30128 KB Output is correct
64 Correct 267 ms 27504 KB Output is correct
65 Correct 281 ms 23852 KB Output is correct
66 Correct 286 ms 25940 KB Output is correct
67 Correct 1 ms 308 KB Output is correct
68 Correct 152 ms 19916 KB Output is correct
69 Correct 690 ms 23476 KB Output is correct
70 Correct 691 ms 24612 KB Output is correct
71 Correct 661 ms 22904 KB Output is correct
72 Correct 676 ms 23972 KB Output is correct
73 Correct 675 ms 23588 KB Output is correct
74 Correct 687 ms 24972 KB Output is correct
75 Correct 694 ms 23244 KB Output is correct
76 Correct 689 ms 24988 KB Output is correct
77 Correct 652 ms 22992 KB Output is correct
78 Correct 675 ms 23508 KB Output is correct
79 Correct 667 ms 32892 KB Output is correct
80 Correct 608 ms 30412 KB Output is correct
81 Correct 633 ms 30408 KB Output is correct
82 Correct 660 ms 27088 KB Output is correct
83 Correct 616 ms 25904 KB Output is correct
84 Correct 1 ms 340 KB Output is correct
85 Correct 518 ms 23180 KB Output is correct