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Submission #1056153

# Submission time Handle Problem Language Result Execution time Memory
1056153 2024-08-13T07:59:16 Z anango Fire (BOI24_fire) C++17
100 / 100
 1059 ms 266896 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;


const int K = 20;
int INF = 1LL<<60;

signed main() {
    #ifndef ONLINE_JUDGE
        // for getting input from input.txt
        //freopen("input.txt", "r", stdin);
        // for writing output to output.txt
        //freopen("output.txt", "w", stdout);
    #endif
    //#ifdef ONLINE_JUDGE
    	ios_base::sync_with_stdio(false);
    	cin.tie(NULL);
    //#endif //fast IO
    int n,m; cin >> n >> m;
    vector<pair<int,int>> segments;
    vector<int> coords;
    //coords.push_back(0); //0 to m-1
    map<int,int> rev;
    for (int i=0; i<n; i++) {
        int l,r; cin >> l >> r;
        if (l<r) {
            segments.push_back({l,r}); 
            coords.push_back(l); 
            coords.push_back(r);
            segments.push_back({m+l,m+r}); 
            coords.push_back(m+l); 
            coords.push_back(m+r);
        }
        else {
            segments.push_back({l,m+r}); 
            coords.push_back(l); 
            coords.push_back(m+r);
        }
    }
    int n0 = segments.size();
    sort(coords.begin(), coords.end());
    coords.erase(unique(coords.begin(), coords.end()),coords.end());
    int k = coords.size();
    for (int i=0; i<k; i++) {
        rev[coords[i]] = i;
    }
    for (int i=0; i<n0; i++) {
        segments[i] = {rev[segments[i].first],rev[segments[i].second]};
    }
    vector<int> go(k,-1);
    multiset<int> ends;
    set<int> indices;
    sort(segments.begin(), segments.end());
    int pointer = 0;
    int lpointer = 0;
    for (int i=0; i<k; i++) {
        while (pointer<n0 && segments[pointer].first==i) {
            indices.insert(pointer);
            ends.insert(segments[pointer].second);
            pointer++;
        }
        if (!ends.size()) {
            go[i] = -1;
        }
        else {
            go[i] = *ends.rbegin();
        }
        while (lpointer<n0 && segments[lpointer].second==i) {
            indices.erase(lpointer);
            ends.erase(ends.find(segments[lpointer].second));
            lpointer++;
        }
    }
    for (int i=0; i<k; i++) {
        //cout << i <<" " << coords[i] <<" " << go[i] << " " << coords[go[i]] << endl;
    }
    vector<vector<int>> lift(k,vector<int>(K,-1));
    for (int i=0; i<k; i++) {
        lift[i][0] = go[i];
    }
    for (int p=1; p<K; p++) {
        for (int i=0; i<k; i++) {
            lift[i][p] = lift[lift[i][p-1]][p-1];
        }
    }
    int mians = INF;
    for (int i=0; i<k; i++) {
        int cur = i;
        int ct = 0;
        for (int p=K-1; p>=0; p--) {
            if (coords[lift[cur][p]]<coords[i]+m) {
                cur = lift[cur][p];
                ct+=1<<p;
            }
        }
        int p = 0;
        if (coords[lift[cur][p]]<=coords[i]+m) {
            cur = lift[cur][p];
            ct++;
        }
        if (coords[cur]>=coords[i]+m) {
            mians=min(mians,ct);
        }
    }
    if (mians<INF) cout << mians << endl;
    else cout << -1 << endl;



    
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 344 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 604 KB Output is correct
27 Correct 1 ms 604 KB Output is correct
28 Correct 1 ms 860 KB Output is correct
29 Correct 1 ms 604 KB Output is correct
30 Correct 1 ms 604 KB Output is correct
31 Correct 0 ms 604 KB Output is correct
32 Correct 0 ms 604 KB Output is correct
33 Correct 1 ms 604 KB Output is correct
34 Correct 0 ms 604 KB Output is correct
35 Correct 0 ms 860 KB Output is correct
36 Correct 1 ms 604 KB Output is correct
37 Correct 1 ms 860 KB Output is correct
38 Correct 1 ms 604 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 344 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 604 KB Output is correct
27 Correct 1 ms 604 KB Output is correct
28 Correct 1 ms 860 KB Output is correct
29 Correct 1 ms 604 KB Output is correct
30 Correct 1 ms 604 KB Output is correct
31 Correct 0 ms 604 KB Output is correct
32 Correct 0 ms 604 KB Output is correct
33 Correct 1 ms 604 KB Output is correct
34 Correct 0 ms 604 KB Output is correct
35 Correct 0 ms 860 KB Output is correct
36 Correct 1 ms 604 KB Output is correct
37 Correct 1 ms 860 KB Output is correct
38 Correct 1 ms 604 KB Output is correct
39 Correct 13 ms 6872 KB Output is correct
40 Correct 12 ms 7016 KB Output is correct
41 Correct 11 ms 6020 KB Output is correct
42 Correct 7 ms 3288 KB Output is correct
43 Correct 7 ms 3544 KB Output is correct
44 Correct 8 ms 4056 KB Output is correct
45 Correct 8 ms 4312 KB Output is correct
46 Correct 9 ms 4312 KB Output is correct
47 Correct 11 ms 6904 KB Output is correct
48 Correct 11 ms 6772 KB Output is correct
49 Correct 10 ms 7008 KB Output is correct
50 Correct 9 ms 3288 KB Output is correct

Subtask #4
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 0 ms 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 604 KB Output is correct
14 Correct 1 ms 860 KB Output is correct
15 Correct 13 ms 5940 KB Output is correct
16 Correct 8 ms 3288 KB Output is correct
17 Correct 11 ms 3544 KB Output is correct
18 Correct 8 ms 4056 KB Output is correct
19 Correct 11 ms 7032 KB Output is correct
20 Correct 143 ms 30864 KB Output is correct
21 Correct 1018 ms 266892 KB Output is correct
22 Correct 1059 ms 266892 KB Output is correct
23 Correct 571 ms 121620 KB Output is correct
24 Correct 969 ms 266124 KB Output is correct
25 Correct 640 ms 126996 KB Output is correct
26 Correct 633 ms 159888 KB Output is correct
27 Correct 612 ms 149900 KB Output is correct
28 Correct 943 ms 259172 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 0 ms 604 KB Output is correct
12 Correct 14 ms 6056 KB Output is correct
13 Correct 7 ms 3284 KB Output is correct
14 Correct 8 ms 3288 KB Output is correct
15 Correct 140 ms 28828 KB Output is correct
16 Correct 515 ms 122084 KB Output is correct
17 Correct 931 ms 227472 KB Output is correct
18 Correct 982 ms 216468 KB Output is correct
19 Correct 850 ms 226144 KB Output is correct
20 Correct 559 ms 122816 KB Output is correct

Subtask #6
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 344 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 604 KB Output is correct
27 Correct 1 ms 604 KB Output is correct
28 Correct 1 ms 860 KB Output is correct
29 Correct 1 ms 604 KB Output is correct
30 Correct 1 ms 604 KB Output is correct
31 Correct 0 ms 604 KB Output is correct
32 Correct 0 ms 604 KB Output is correct
33 Correct 1 ms 604 KB Output is correct
34 Correct 0 ms 604 KB Output is correct
35 Correct 0 ms 860 KB Output is correct
36 Correct 1 ms 604 KB Output is correct
37 Correct 1 ms 860 KB Output is correct
38 Correct 1 ms 604 KB Output is correct
39 Correct 13 ms 6872 KB Output is correct
40 Correct 12 ms 7016 KB Output is correct
41 Correct 11 ms 6020 KB Output is correct
42 Correct 7 ms 3288 KB Output is correct
43 Correct 7 ms 3544 KB Output is correct
44 Correct 8 ms 4056 KB Output is correct
45 Correct 8 ms 4312 KB Output is correct
46 Correct 9 ms 4312 KB Output is correct
47 Correct 11 ms 6904 KB Output is correct
48 Correct 11 ms 6772 KB Output is correct
49 Correct 10 ms 7008 KB Output is correct
50 Correct 9 ms 3288 KB Output is correct
51 Correct 0 ms 344 KB Output is correct
52 Correct 0 ms 344 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 0 ms 348 KB Output is correct
55 Correct 0 ms 348 KB Output is correct
56 Correct 0 ms 348 KB Output is correct
57 Correct 0 ms 348 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 604 KB Output is correct
60 Correct 1 ms 604 KB Output is correct
61 Correct 0 ms 604 KB Output is correct
62 Correct 0 ms 604 KB Output is correct
63 Correct 0 ms 604 KB Output is correct
64 Correct 1 ms 860 KB Output is correct
65 Correct 13 ms 5940 KB Output is correct
66 Correct 8 ms 3288 KB Output is correct
67 Correct 11 ms 3544 KB Output is correct
68 Correct 8 ms 4056 KB Output is correct
69 Correct 11 ms 7032 KB Output is correct
70 Correct 143 ms 30864 KB Output is correct
71 Correct 1018 ms 266892 KB Output is correct
72 Correct 1059 ms 266892 KB Output is correct
73 Correct 571 ms 121620 KB Output is correct
74 Correct 969 ms 266124 KB Output is correct
75 Correct 640 ms 126996 KB Output is correct
76 Correct 633 ms 159888 KB Output is correct
77 Correct 612 ms 149900 KB Output is correct
78 Correct 943 ms 259172 KB Output is correct
79 Correct 1 ms 348 KB Output is correct
80 Correct 0 ms 348 KB Output is correct
81 Correct 0 ms 348 KB Output is correct
82 Correct 0 ms 348 KB Output is correct
83 Correct 0 ms 348 KB Output is correct
84 Correct 0 ms 344 KB Output is correct
85 Correct 0 ms 344 KB Output is correct
86 Correct 1 ms 604 KB Output is correct
87 Correct 0 ms 604 KB Output is correct
88 Correct 1 ms 604 KB Output is correct
89 Correct 0 ms 604 KB Output is correct
90 Correct 14 ms 6056 KB Output is correct
91 Correct 7 ms 3284 KB Output is correct
92 Correct 8 ms 3288 KB Output is correct
93 Correct 140 ms 28828 KB Output is correct
94 Correct 515 ms 122084 KB Output is correct
95 Correct 931 ms 227472 KB Output is correct
96 Correct 982 ms 216468 KB Output is correct
97 Correct 850 ms 226144 KB Output is correct
98 Correct 559 ms 122816 KB Output is correct
99 Correct 1039 ms 263556 KB Output is correct
100 Correct 1057 ms 265488 KB Output is correct
101 Correct 902 ms 263816 KB Output is correct
102 Correct 878 ms 265044 KB Output is correct
103 Correct 608 ms 158560 KB Output is correct
104 Correct 849 ms 254540 KB Output is correct
105 Correct 615 ms 266896 KB Output is correct