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Submission #1088648

# Submission time Handle Problem Language Result Execution time Memory
1088648 2024-09-14T17:39:05 Z raczek Fire (BOI24_fire) C++17
100 / 100
 724 ms 94332 KB 
#include<bits/stdc++.h>
using namespace std;
#ifdef DEBUG
auto&operator <<(auto& o, pair<auto, auto> p) {return o<<"("<<p.first<<", "<<p.second<<")";}
auto operator <<(auto& o, auto x)->decltype(x.end(), o) {o<<"{"; for(auto v : x) o<<v<<", "; return o<<"}";}
#define debug(X) cout<<"["#X"]"<<X<<endl;
#else
#define debug(X) {}
#endif
#define int long long
const int base = 1<<19;
struct segtree
{
	vector<pair<int, int> > tree;
	segtree(int n){tree.resize(base*2+10, {0, -n});}
	void add(int w, pair<int, int> val)
	{
		w += base;
		if(tree[w] < val) tree[w] = val;
		w /= 2;
		while(w != 0)
		{
			tree[w] = max(tree[w*2], tree[w*2+1]);
			w /= 2;
		}
	}
	pair<int, int> query(int w, int p, int k, int x, int y)
	{
		if(p > y || k < x) return {0, -1};
		if(x <= p && k <= y) return tree[w];
		return max(query(w*2, p, (p+k)/2, x, y),
				query(w*2+1, (p+k)/2+1, k, x, y));
	}
};
int32_t main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	int n, m;
	cin>>n>>m;
	map<int, int> scl;
	vector<pair<int, int> > vals(n);
	for(auto& v : vals) cin>>v.first>>v.second;
	for(auto& v : vals) scl[v.first] = 1, scl[v.second] = 1;
	int cnt = 0;
	for(auto& v : scl) v.second = cnt++;
	for(auto& v : vals) v.first = scl[v.first], v.second = scl[v.second];
	debug(vals);
	segtree A(n);
	for(auto& v : vals)
		if(v.second < v.first)
		{A.add(v.first, make_pair(v.second + cnt, -(int)(&v - &vals[0])));}
		else
		{A.add(v.first, make_pair(v.second, -(int)(&v - &vals[0])));}
	vector par(n+1, vector(22, n));
	for(auto& v : vals)
	{
		debug((int)(&v - &vals[0]));
		if(v.second < v.first)
		{
			auto a1 = A.query(1, 0, base-1, v.first, base-1);
			auto a2 = A.query(1, 0, base-1, 0, v.second);
			if(a2.second != -1){par[(int)(&v - &vals[0])][0] = -a2.second;}
			else par[(int)(&v - &vals[0])][0] = -a1.second;
		}
		else
			par[(int)(&v - &vals[0])][0] =
				-A.query(1, 0, base-1, v.first, v.second).second;
	}
	int result = 1e9+7;
	auto check = [&](int p, int k, int x)
	{
		if(x < 0) return false;
		if(k < p)
			return x >= p || x <= k;
		else
			return p <= x && x <= k;
	};
	vals.push_back({-1, -1});
	for(int i=1;i<22;i++)
		for(int j=0;j<n;j++)
		{
			par[j][i] = par[par[j][i-1]][i-1];
			if(check(vals[j].first, vals[par[j][i-1]].second, vals[par[j][i]].second))
			{
//				if(par[j][i] != j)
//					result = min(result, (1LL<<(i+1))); 
				par[j][i] = n;
			}
		}
	debug(par);
	for(int i=0;i<n;i++)
	{
		int b = i;
		int res = 1;
		bool e = true;
		while(e)
		{
			debug(b);
			e = false;
			int d = 0;
			for(;d<22;d++)
			{
				if(par[b][d] == n) break;
				if(par[b][d] == b) break;
				if(!check((vals[b].second)%cnt, (vals[i].first-1+cnt)%cnt, vals[par[b][d]].second)) 
				break;
			}
			if(d == 0) break;
			debug(d);
			d--;
			b = par[b][d];
			res += (1<<d);
			e = true;
		}
		debug(b);
		debug(par[b][0]);
		debug(res);
		if(par[b][0] != n && par[b][0] != b)
		result = min(result, res+1);
	}
	if(result > n)
		cout<<-1;
	else
		cout<<result;	
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 16728 KB Output is correct
2 Correct 5 ms 16816 KB Output is correct
3 Correct 7 ms 16732 KB Output is correct
4 Correct 6 ms 16732 KB Output is correct
5 Correct 5 ms 16732 KB Output is correct
6 Correct 6 ms 16676 KB Output is correct
7 Correct 6 ms 16660 KB Output is correct
8 Correct 6 ms 16752 KB Output is correct
9 Correct 7 ms 16728 KB Output is correct
10 Correct 6 ms 16732 KB Output is correct
11 Correct 6 ms 16732 KB Output is correct
12 Correct 6 ms 16732 KB Output is correct
13 Correct 6 ms 16668 KB Output is correct
14 Correct 6 ms 16880 KB Output is correct
15 Correct 6 ms 16732 KB Output is correct
16 Correct 8 ms 16732 KB Output is correct
17 Correct 6 ms 16732 KB Output is correct
18 Correct 6 ms 16988 KB Output is correct
19 Correct 6 ms 16732 KB Output is correct
20 Correct 6 ms 16732 KB Output is correct
21 Correct 9 ms 16840 KB Output is correct
22 Correct 6 ms 16732 KB Output is correct
23 Correct 6 ms 16732 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 16728 KB Output is correct
2 Correct 5 ms 16816 KB Output is correct
3 Correct 7 ms 16732 KB Output is correct
4 Correct 6 ms 16732 KB Output is correct
5 Correct 5 ms 16732 KB Output is correct
6 Correct 6 ms 16676 KB Output is correct
7 Correct 6 ms 16660 KB Output is correct
8 Correct 6 ms 16752 KB Output is correct
9 Correct 7 ms 16728 KB Output is correct
10 Correct 6 ms 16732 KB Output is correct
11 Correct 6 ms 16732 KB Output is correct
12 Correct 6 ms 16732 KB Output is correct
13 Correct 6 ms 16668 KB Output is correct
14 Correct 6 ms 16880 KB Output is correct
15 Correct 6 ms 16732 KB Output is correct
16 Correct 8 ms 16732 KB Output is correct
17 Correct 6 ms 16732 KB Output is correct
18 Correct 6 ms 16988 KB Output is correct
19 Correct 6 ms 16732 KB Output is correct
20 Correct 6 ms 16732 KB Output is correct
21 Correct 9 ms 16840 KB Output is correct
22 Correct 6 ms 16732 KB Output is correct
23 Correct 6 ms 16732 KB Output is correct
24 Correct 6 ms 16732 KB Output is correct
25 Correct 7 ms 16800 KB Output is correct
26 Correct 6 ms 16988 KB Output is correct
27 Correct 7 ms 16732 KB Output is correct
28 Correct 6 ms 16984 KB Output is correct
29 Correct 7 ms 16988 KB Output is correct
30 Correct 7 ms 16732 KB Output is correct
31 Correct 6 ms 16732 KB Output is correct
32 Correct 6 ms 16840 KB Output is correct
33 Correct 7 ms 16732 KB Output is correct
34 Correct 7 ms 16824 KB Output is correct
35 Correct 7 ms 16988 KB Output is correct
36 Correct 6 ms 16988 KB Output is correct
37 Correct 7 ms 17240 KB Output is correct
38 Correct 6 ms 16988 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 16728 KB Output is correct
2 Correct 5 ms 16816 KB Output is correct
3 Correct 7 ms 16732 KB Output is correct
4 Correct 6 ms 16732 KB Output is correct
5 Correct 5 ms 16732 KB Output is correct
6 Correct 6 ms 16676 KB Output is correct
7 Correct 6 ms 16660 KB Output is correct
8 Correct 6 ms 16752 KB Output is correct
9 Correct 7 ms 16728 KB Output is correct
10 Correct 6 ms 16732 KB Output is correct
11 Correct 6 ms 16732 KB Output is correct
12 Correct 6 ms 16732 KB Output is correct
13 Correct 6 ms 16668 KB Output is correct
14 Correct 6 ms 16880 KB Output is correct
15 Correct 6 ms 16732 KB Output is correct
16 Correct 8 ms 16732 KB Output is correct
17 Correct 6 ms 16732 KB Output is correct
18 Correct 6 ms 16988 KB Output is correct
19 Correct 6 ms 16732 KB Output is correct
20 Correct 6 ms 16732 KB Output is correct
21 Correct 9 ms 16840 KB Output is correct
22 Correct 6 ms 16732 KB Output is correct
23 Correct 6 ms 16732 KB Output is correct
24 Correct 6 ms 16732 KB Output is correct
25 Correct 7 ms 16800 KB Output is correct
26 Correct 6 ms 16988 KB Output is correct
27 Correct 7 ms 16732 KB Output is correct
28 Correct 6 ms 16984 KB Output is correct
29 Correct 7 ms 16988 KB Output is correct
30 Correct 7 ms 16732 KB Output is correct
31 Correct 6 ms 16732 KB Output is correct
32 Correct 6 ms 16840 KB Output is correct
33 Correct 7 ms 16732 KB Output is correct
34 Correct 7 ms 16824 KB Output is correct
35 Correct 7 ms 16988 KB Output is correct
36 Correct 6 ms 16988 KB Output is correct
37 Correct 7 ms 17240 KB Output is correct
38 Correct 6 ms 16988 KB Output is correct
39 Correct 12 ms 18780 KB Output is correct
40 Correct 12 ms 18780 KB Output is correct
41 Correct 12 ms 18676 KB Output is correct
42 Correct 11 ms 18268 KB Output is correct
43 Correct 10 ms 18268 KB Output is correct
44 Correct 12 ms 18264 KB Output is correct
45 Correct 12 ms 18524 KB Output is correct
46 Correct 13 ms 18300 KB Output is correct
47 Correct 12 ms 18776 KB Output is correct
48 Correct 13 ms 18712 KB Output is correct
49 Correct 11 ms 18640 KB Output is correct
50 Correct 15 ms 18524 KB Output is correct

Subtask #4
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 16728 KB Output is correct
2 Correct 6 ms 16732 KB Output is correct
3 Correct 6 ms 16732 KB Output is correct
4 Correct 6 ms 16764 KB Output is correct
5 Correct 6 ms 16732 KB Output is correct
6 Correct 6 ms 16704 KB Output is correct
7 Correct 6 ms 16732 KB Output is correct
8 Correct 6 ms 16732 KB Output is correct
9 Correct 7 ms 16732 KB Output is correct
10 Correct 8 ms 16988 KB Output is correct
11 Correct 7 ms 16732 KB Output is correct
12 Correct 7 ms 16988 KB Output is correct
13 Correct 7 ms 16988 KB Output is correct
14 Correct 6 ms 16988 KB Output is correct
15 Correct 12 ms 18704 KB Output is correct
16 Correct 12 ms 18364 KB Output is correct
17 Correct 14 ms 18524 KB Output is correct
18 Correct 12 ms 18268 KB Output is correct
19 Correct 12 ms 18780 KB Output is correct
20 Correct 117 ms 66032 KB Output is correct
21 Correct 590 ms 92496 KB Output is correct
22 Correct 542 ms 92756 KB Output is correct
23 Correct 701 ms 79696 KB Output is correct
24 Correct 639 ms 92752 KB Output is correct
25 Correct 345 ms 77356 KB Output is correct
26 Correct 527 ms 80168 KB Output is correct
27 Correct 658 ms 80020 KB Output is correct
28 Correct 410 ms 92216 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 16728 KB Output is correct
2 Correct 7 ms 16728 KB Output is correct
3 Correct 6 ms 16732 KB Output is correct
4 Correct 6 ms 16732 KB Output is correct
5 Correct 6 ms 16732 KB Output is correct
6 Correct 6 ms 16732 KB Output is correct
7 Correct 6 ms 16728 KB Output is correct
8 Correct 6 ms 16988 KB Output is correct
9 Correct 6 ms 16900 KB Output is correct
10 Correct 6 ms 16984 KB Output is correct
11 Correct 7 ms 16988 KB Output is correct
12 Correct 13 ms 18776 KB Output is correct
13 Correct 12 ms 18268 KB Output is correct
14 Correct 11 ms 18316 KB Output is correct
15 Correct 115 ms 66128 KB Output is correct
16 Correct 660 ms 79808 KB Output is correct
17 Correct 620 ms 92568 KB Output is correct
18 Correct 546 ms 92676 KB Output is correct
19 Correct 598 ms 92752 KB Output is correct
20 Correct 701 ms 79700 KB Output is correct

Subtask #6
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 16728 KB Output is correct
2 Correct 5 ms 16816 KB Output is correct
3 Correct 7 ms 16732 KB Output is correct
4 Correct 6 ms 16732 KB Output is correct
5 Correct 5 ms 16732 KB Output is correct
6 Correct 6 ms 16676 KB Output is correct
7 Correct 6 ms 16660 KB Output is correct
8 Correct 6 ms 16752 KB Output is correct
9 Correct 7 ms 16728 KB Output is correct
10 Correct 6 ms 16732 KB Output is correct
11 Correct 6 ms 16732 KB Output is correct
12 Correct 6 ms 16732 KB Output is correct
13 Correct 6 ms 16668 KB Output is correct
14 Correct 6 ms 16880 KB Output is correct
15 Correct 6 ms 16732 KB Output is correct
16 Correct 8 ms 16732 KB Output is correct
17 Correct 6 ms 16732 KB Output is correct
18 Correct 6 ms 16988 KB Output is correct
19 Correct 6 ms 16732 KB Output is correct
20 Correct 6 ms 16732 KB Output is correct
21 Correct 9 ms 16840 KB Output is correct
22 Correct 6 ms 16732 KB Output is correct
23 Correct 6 ms 16732 KB Output is correct
24 Correct 6 ms 16732 KB Output is correct
25 Correct 7 ms 16800 KB Output is correct
26 Correct 6 ms 16988 KB Output is correct
27 Correct 7 ms 16732 KB Output is correct
28 Correct 6 ms 16984 KB Output is correct
29 Correct 7 ms 16988 KB Output is correct
30 Correct 7 ms 16732 KB Output is correct
31 Correct 6 ms 16732 KB Output is correct
32 Correct 6 ms 16840 KB Output is correct
33 Correct 7 ms 16732 KB Output is correct
34 Correct 7 ms 16824 KB Output is correct
35 Correct 7 ms 16988 KB Output is correct
36 Correct 6 ms 16988 KB Output is correct
37 Correct 7 ms 17240 KB Output is correct
38 Correct 6 ms 16988 KB Output is correct
39 Correct 12 ms 18780 KB Output is correct
40 Correct 12 ms 18780 KB Output is correct
41 Correct 12 ms 18676 KB Output is correct
42 Correct 11 ms 18268 KB Output is correct
43 Correct 10 ms 18268 KB Output is correct
44 Correct 12 ms 18264 KB Output is correct
45 Correct 12 ms 18524 KB Output is correct
46 Correct 13 ms 18300 KB Output is correct
47 Correct 12 ms 18776 KB Output is correct
48 Correct 13 ms 18712 KB Output is correct
49 Correct 11 ms 18640 KB Output is correct
50 Correct 15 ms 18524 KB Output is correct
51 Correct 6 ms 16728 KB Output is correct
52 Correct 6 ms 16732 KB Output is correct
53 Correct 6 ms 16732 KB Output is correct
54 Correct 6 ms 16764 KB Output is correct
55 Correct 6 ms 16732 KB Output is correct
56 Correct 6 ms 16704 KB Output is correct
57 Correct 6 ms 16732 KB Output is correct
58 Correct 6 ms 16732 KB Output is correct
59 Correct 7 ms 16732 KB Output is correct
60 Correct 8 ms 16988 KB Output is correct
61 Correct 7 ms 16732 KB Output is correct
62 Correct 7 ms 16988 KB Output is correct
63 Correct 7 ms 16988 KB Output is correct
64 Correct 6 ms 16988 KB Output is correct
65 Correct 12 ms 18704 KB Output is correct
66 Correct 12 ms 18364 KB Output is correct
67 Correct 14 ms 18524 KB Output is correct
68 Correct 12 ms 18268 KB Output is correct
69 Correct 12 ms 18780 KB Output is correct
70 Correct 117 ms 66032 KB Output is correct
71 Correct 590 ms 92496 KB Output is correct
72 Correct 542 ms 92756 KB Output is correct
73 Correct 701 ms 79696 KB Output is correct
74 Correct 639 ms 92752 KB Output is correct
75 Correct 345 ms 77356 KB Output is correct
76 Correct 527 ms 80168 KB Output is correct
77 Correct 658 ms 80020 KB Output is correct
78 Correct 410 ms 92216 KB Output is correct
79 Correct 6 ms 16728 KB Output is correct
80 Correct 7 ms 16728 KB Output is correct
81 Correct 6 ms 16732 KB Output is correct
82 Correct 6 ms 16732 KB Output is correct
83 Correct 6 ms 16732 KB Output is correct
84 Correct 6 ms 16732 KB Output is correct
85 Correct 6 ms 16728 KB Output is correct
86 Correct 6 ms 16988 KB Output is correct
87 Correct 6 ms 16900 KB Output is correct
88 Correct 6 ms 16984 KB Output is correct
89 Correct 7 ms 16988 KB Output is correct
90 Correct 13 ms 18776 KB Output is correct
91 Correct 12 ms 18268 KB Output is correct
92 Correct 11 ms 18316 KB Output is correct
93 Correct 115 ms 66128 KB Output is correct
94 Correct 660 ms 79808 KB Output is correct
95 Correct 620 ms 92568 KB Output is correct
96 Correct 546 ms 92676 KB Output is correct
97 Correct 598 ms 92752 KB Output is correct
98 Correct 701 ms 79700 KB Output is correct
99 Correct 504 ms 94288 KB Output is correct
100 Correct 520 ms 94332 KB Output is correct
101 Correct 724 ms 94316 KB Output is correct
102 Correct 635 ms 94292 KB Output is correct
103 Correct 577 ms 81784 KB Output is correct
104 Correct 403 ms 93012 KB Output is correct
105 Correct 253 ms 92968 KB Output is correct