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Submission #1033861

# Submission time Handle Problem Language Result Execution time Memory
1033861 2024-07-25T07:08:59 Z 변재우(#10974) Fire (BOI24_fire) C++17
100 / 100
 172 ms 73628 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;

const int Nmax=200010;
int N, M, W, P, ans=Nmax, I[20][2*Nmax];
vector<pair<int, int>> V, T;
vector<int> X;

int F(int l, int r) {
    int ret=0;
    for(int i=19; i>=0; i--) if(I[i][l]<r) ret+=1<<i, l=I[i][l];
    if(I[0][l]<r) return Nmax;
    return ret+1;
}

signed main() {
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin>>N>>P;
    for(int i=1; i<=N; i++) {
        int x, y; cin>>x>>y;
        if(x>y) T.push_back({x, y});
        else V.push_back({x, y});
        X.push_back(x), X.push_back(y);
    }
    N=V.size(), M=T.size();
    X.push_back(0), X.push_back(P);
    sort(X.begin(), X.end()); X.erase(unique(X.begin(), X.end()), X.end());
    W=X.size();
    for(int i=0; i<N; i++) {
        V[i].first=lower_bound(X.begin(), X.end(), V[i].first)-X.begin()+1;
        V[i].second=lower_bound(X.begin(), X.end(), V[i].second)-X.begin()+1;
    }
    for(int i=0; i<M; i++) {
        T[i].first=lower_bound(X.begin(), X.end(), T[i].first)-X.begin()+1;
        T[i].second=lower_bound(X.begin(), X.end(), T[i].second)-X.begin()+1;
    }
    sort(V.begin(), V.end());
    for(int i=1, j=0, mx=i; i<=W; i++) {
        while(j<V.size() && V[j].first<=i) mx=max(mx, V[j++].second);
        I[0][i]=max(mx, i);
    }
    for(int i=1; i<20; i++) for(int j=1; j<=W; j++) I[i][j]=I[i-1][I[i-1][j]];
    for(auto [r, l]:T) ans=min(ans, 1+F(l, r));
    if(ans>N+M) cout<<-1;
    else cout<<ans;
    return 0;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:40:16: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |         while(j<V.size() && V[j].first<=i) mx=max(mx, V[j++].second);
      |               ~^~~~~~~~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 0 ms 604 KB Output is correct
8 Correct 0 ms 604 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 0 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 1 ms 600 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 0 ms 604 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 0 ms 604 KB Output is correct
19 Correct 0 ms 604 KB Output is correct
20 Correct 0 ms 604 KB Output is correct
21 Correct 0 ms 604 KB Output is correct
22 Correct 0 ms 604 KB Output is correct
23 Correct 0 ms 604 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 0 ms 604 KB Output is correct
8 Correct 0 ms 604 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 0 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 1 ms 600 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 0 ms 604 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 0 ms 604 KB Output is correct
19 Correct 0 ms 604 KB Output is correct
20 Correct 0 ms 604 KB Output is correct
21 Correct 0 ms 604 KB Output is correct
22 Correct 0 ms 604 KB Output is correct
23 Correct 0 ms 604 KB Output is correct
24 Correct 1 ms 604 KB Output is correct
25 Correct 0 ms 604 KB Output is correct
26 Correct 0 ms 600 KB Output is correct
27 Correct 1 ms 604 KB Output is correct
28 Correct 1 ms 600 KB Output is correct
29 Correct 0 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 604 KB Output is correct
36 Correct 0 ms 604 KB Output is correct
37 Correct 1 ms 604 KB Output is correct
38 Correct 0 ms 604 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 0 ms 604 KB Output is correct
8 Correct 0 ms 604 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 0 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 1 ms 600 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 0 ms 604 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 0 ms 604 KB Output is correct
19 Correct 0 ms 604 KB Output is correct
20 Correct 0 ms 604 KB Output is correct
21 Correct 0 ms 604 KB Output is correct
22 Correct 0 ms 604 KB Output is correct
23 Correct 0 ms 604 KB Output is correct
24 Correct 1 ms 604 KB Output is correct
25 Correct 0 ms 604 KB Output is correct
26 Correct 0 ms 600 KB Output is correct
27 Correct 1 ms 604 KB Output is correct
28 Correct 1 ms 600 KB Output is correct
29 Correct 0 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 604 KB Output is correct
36 Correct 0 ms 604 KB Output is correct
37 Correct 1 ms 604 KB Output is correct
38 Correct 0 ms 604 KB Output is correct
39 Correct 3 ms 2396 KB Output is correct
40 Correct 3 ms 2396 KB Output is correct
41 Correct 3 ms 2396 KB Output is correct
42 Correct 3 ms 1576 KB Output is correct
43 Correct 3 ms 1500 KB Output is correct
44 Correct 3 ms 1628 KB Output is correct
45 Correct 3 ms 1628 KB Output is correct
46 Correct 3 ms 1628 KB Output is correct
47 Correct 3 ms 2396 KB Output is correct
48 Correct 3 ms 2396 KB Output is correct
49 Correct 2 ms 2396 KB Output is correct
50 Correct 3 ms 1628 KB Output is correct

Subtask #4
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 0 ms 468 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 1 ms 600 KB Output is correct
7 Correct 0 ms 600 KB Output is correct
8 Correct 0 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 5 ms 2396 KB Output is correct
16 Correct 3 ms 1628 KB Output is correct
17 Correct 3 ms 1536 KB Output is correct
18 Correct 3 ms 1876 KB Output is correct
19 Correct 3 ms 2396 KB Output is correct
20 Correct 28 ms 9572 KB Output is correct
21 Correct 154 ms 73376 KB Output is correct
22 Correct 157 ms 73184 KB Output is correct
23 Correct 118 ms 41140 KB Output is correct
24 Correct 145 ms 73372 KB Output is correct
25 Correct 111 ms 35984 KB Output is correct
26 Correct 126 ms 42148 KB Output is correct
27 Correct 123 ms 42040 KB Output is correct
28 Correct 146 ms 71864 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 0 ms 604 KB Output is correct
8 Correct 0 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 0 ms 604 KB Output is correct
11 Correct 0 ms 604 KB Output is correct
12 Correct 3 ms 2396 KB Output is correct
13 Correct 3 ms 1628 KB Output is correct
14 Correct 3 ms 1628 KB Output is correct
15 Correct 29 ms 9552 KB Output is correct
16 Correct 124 ms 41176 KB Output is correct
17 Correct 153 ms 73364 KB Output is correct
18 Correct 172 ms 73628 KB Output is correct
19 Correct 138 ms 73236 KB Output is correct
20 Correct 120 ms 41124 KB Output is correct

Subtask #6
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 0 ms 604 KB Output is correct
8 Correct 0 ms 604 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 0 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 1 ms 600 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 0 ms 604 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 0 ms 604 KB Output is correct
19 Correct 0 ms 604 KB Output is correct
20 Correct 0 ms 604 KB Output is correct
21 Correct 0 ms 604 KB Output is correct
22 Correct 0 ms 604 KB Output is correct
23 Correct 0 ms 604 KB Output is correct
24 Correct 1 ms 604 KB Output is correct
25 Correct 0 ms 604 KB Output is correct
26 Correct 0 ms 600 KB Output is correct
27 Correct 1 ms 604 KB Output is correct
28 Correct 1 ms 600 KB Output is correct
29 Correct 0 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 604 KB Output is correct
36 Correct 0 ms 604 KB Output is correct
37 Correct 1 ms 604 KB Output is correct
38 Correct 0 ms 604 KB Output is correct
39 Correct 3 ms 2396 KB Output is correct
40 Correct 3 ms 2396 KB Output is correct
41 Correct 3 ms 2396 KB Output is correct
42 Correct 3 ms 1576 KB Output is correct
43 Correct 3 ms 1500 KB Output is correct
44 Correct 3 ms 1628 KB Output is correct
45 Correct 3 ms 1628 KB Output is correct
46 Correct 3 ms 1628 KB Output is correct
47 Correct 3 ms 2396 KB Output is correct
48 Correct 3 ms 2396 KB Output is correct
49 Correct 2 ms 2396 KB Output is correct
50 Correct 3 ms 1628 KB Output is correct
51 Correct 1 ms 604 KB Output is correct
52 Correct 0 ms 468 KB Output is correct
53 Correct 0 ms 604 KB Output is correct
54 Correct 0 ms 604 KB Output is correct
55 Correct 0 ms 604 KB Output is correct
56 Correct 1 ms 600 KB Output is correct
57 Correct 0 ms 600 KB Output is correct
58 Correct 0 ms 604 KB Output is correct
59 Correct 1 ms 604 KB Output is correct
60 Correct 1 ms 604 KB Output is correct
61 Correct 1 ms 604 KB Output is correct
62 Correct 0 ms 604 KB Output is correct
63 Correct 1 ms 604 KB Output is correct
64 Correct 1 ms 604 KB Output is correct
65 Correct 5 ms 2396 KB Output is correct
66 Correct 3 ms 1628 KB Output is correct
67 Correct 3 ms 1536 KB Output is correct
68 Correct 3 ms 1876 KB Output is correct
69 Correct 3 ms 2396 KB Output is correct
70 Correct 28 ms 9572 KB Output is correct
71 Correct 154 ms 73376 KB Output is correct
72 Correct 157 ms 73184 KB Output is correct
73 Correct 118 ms 41140 KB Output is correct
74 Correct 145 ms 73372 KB Output is correct
75 Correct 111 ms 35984 KB Output is correct
76 Correct 126 ms 42148 KB Output is correct
77 Correct 123 ms 42040 KB Output is correct
78 Correct 146 ms 71864 KB Output is correct
79 Correct 0 ms 604 KB Output is correct
80 Correct 1 ms 604 KB Output is correct
81 Correct 0 ms 604 KB Output is correct
82 Correct 0 ms 604 KB Output is correct
83 Correct 0 ms 604 KB Output is correct
84 Correct 0 ms 604 KB Output is correct
85 Correct 0 ms 604 KB Output is correct
86 Correct 0 ms 604 KB Output is correct
87 Correct 1 ms 604 KB Output is correct
88 Correct 0 ms 604 KB Output is correct
89 Correct 0 ms 604 KB Output is correct
90 Correct 3 ms 2396 KB Output is correct
91 Correct 3 ms 1628 KB Output is correct
92 Correct 3 ms 1628 KB Output is correct
93 Correct 29 ms 9552 KB Output is correct
94 Correct 124 ms 41176 KB Output is correct
95 Correct 153 ms 73364 KB Output is correct
96 Correct 172 ms 73628 KB Output is correct
97 Correct 138 ms 73236 KB Output is correct
98 Correct 120 ms 41124 KB Output is correct
99 Correct 151 ms 73268 KB Output is correct
100 Correct 149 ms 73372 KB Output is correct
101 Correct 142 ms 73368 KB Output is correct
102 Correct 144 ms 73292 KB Output is correct
103 Correct 129 ms 42144 KB Output is correct
104 Correct 141 ms 70304 KB Output is correct
105 Correct 76 ms 72088 KB Output is correct