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답안 #1034266

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1034266 2024-07-25T11:27:38 Z Unforgettablepl Tourism (JOI23_tourism) C++17
100 / 100
 760 ms 37004 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long

struct fenwick{
	int n;vector<int> tree;
	fenwick(int n):n(n),tree(n+1){}
	int get(int k){
		int ans = 0;
		while(k){
			ans+=tree[k];
			k-=k&-k;
		}
		return ans;
	}
	void add(int k,int x){
		while(k<=n){
			tree[k]+=x;
			k+=k&-k;
		}
	}
};

int32_t main(){
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
	int n,m,q;
	cin >> n >> m >> q;
	vector<vector<int>> adj(n+1);
	vector<vector<int>> nadj(n+1);
	for(int i=1;i<n;i++){
		int a,b;cin>>a>>b;
		adj[a].emplace_back(b);
		adj[b].emplace_back(a);
	}
	vector<int> tim(n+1);
	vector<int> siz(n+1);
	int c = 0;
	vector<int> next(n+1);
	vector<int> p(n+1);
	function<int(int,int)> dfs1 = [&](int x,int par){
		p[x]=par;
		siz[x]=1;
		for(int&i:adj[x])if(i!=par){
			nadj[x].emplace_back(i);
			siz[x]+=dfs1(i,x);
		}
		for(int&i:nadj[x])if(siz[i]>siz[nadj[x][0]])swap(i,nadj[x][0]);
		return siz[x];
	};
	dfs1(1,1);
	swap(nadj,adj);
	function<void(int)> dfs2 = [&](int x){
		tim[x] = ++c;
		for(int&i:adj[x]){
			if(i==adj[x][0])next[i]=next[x];
			else next[i]=i;
			dfs2(i);
		}
	};
	dfs2(1);
	map<int,int> mp;
	fenwick cnt(m+1);
	auto traverse_path = [&](int a,int b,int x){
		if(a==b)return;
		vector<pair<int,int>> paths;
		while(true){
			if(tim[a]>tim[b])swap(a,b);
			if(next[a]==next[b]){
				paths.emplace_back(tim[a]+1,tim[b]);
				break;
			}
			paths.emplace_back(tim[next[b]],tim[b]);
			b = p[next[b]];
		}
		for(auto [l,r]:paths){
			r++;
			if(l==r)continue;
			for(int y : {l,r}){
				if(mp.count(y)==0){
					auto itr = mp.lower_bound(y);
					itr--;
					mp[y]=itr->second;
				}
			}
			while(true){
				auto itr = mp.lower_bound(l);
				if(itr->first==r)break;
				auto nxt = std::next(itr);
				cnt.add(itr->second,(itr->first)-(nxt->first));
				mp.erase(itr);
			}
			mp[l]=x;
			cnt.add(x,r-l);
		}
	};
	vector<int> checkpoints(m+1);
	for(int i=1;i<=m;i++)cin>>checkpoints[i];
	vector<int> L(q),R(q);
	vector<vector<int>> queries(m+1);
	vector<int> ans(q);
	for(int i=0;i<q;i++){
		cin >> L[i] >> R[i];
		if(L[i]!=m)queries[L[i]].emplace_back(i);
	}
	cnt.add(m,n);
	mp[0]=-1;
	mp[1]=m;
	mp[n+1]=-1;
	for(int l=m-1;l;l--){
		traverse_path(checkpoints[l],checkpoints[l+1],l);
		for(int&idx:queries[l]){
			ans[idx] = cnt.get(R[idx]-1);
		}
	}
	for(int&i:ans)cout<<i+1<<'\n';
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 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 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 472 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 456 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 456 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 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 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 472 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 456 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 456 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 4 ms 856 KB Output is correct
31 Correct 4 ms 664 KB Output is correct
32 Correct 5 ms 860 KB Output is correct
33 Correct 5 ms 1012 KB Output is correct
34 Correct 5 ms 860 KB Output is correct
35 Correct 5 ms 992 KB Output is correct
36 Correct 5 ms 860 KB Output is correct
37 Correct 6 ms 1000 KB Output is correct
38 Correct 2 ms 856 KB Output is correct
39 Correct 2 ms 860 KB Output is correct
40 Correct 3 ms 1368 KB Output is correct
41 Correct 2 ms 1116 KB Output is correct
42 Correct 2 ms 1116 KB Output is correct
43 Correct 2 ms 860 KB Output is correct
44 Correct 3 ms 1112 KB Output is correct
45 Correct 3 ms 1116 KB Output is correct
46 Correct 3 ms 860 KB Output is correct
47 Correct 3 ms 860 KB Output is correct
48 Correct 3 ms 1112 KB Output is correct
49 Correct 3 ms 860 KB Output is correct
50 Correct 3 ms 860 KB Output is correct
51 Correct 3 ms 860 KB Output is correct
52 Correct 3 ms 860 KB Output is correct
53 Correct 4 ms 928 KB Output is correct
54 Correct 4 ms 860 KB Output is correct
55 Correct 3 ms 856 KB Output is correct
56 Correct 1 ms 600 KB Output is correct
57 Correct 1 ms 604 KB Output is correct
58 Correct 5 ms 860 KB Output is correct

Subtask #3
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 76 ms 22788 KB Output is correct
5 Correct 64 ms 27144 KB Output is correct
6 Correct 75 ms 30804 KB Output is correct
7 Correct 97 ms 35924 KB Output is correct
8 Correct 95 ms 35920 KB Output is correct
9 Correct 98 ms 35924 KB Output is correct
10 Correct 96 ms 36064 KB Output is correct
11 Correct 101 ms 35920 KB Output is correct
12 Correct 96 ms 35404 KB Output is correct
13 Correct 99 ms 35408 KB Output is correct
14 Correct 93 ms 35664 KB Output is correct
15 Correct 42 ms 29008 KB Output is correct
16 Correct 99 ms 35668 KB Output is correct
17 Correct 32 ms 9808 KB Output is correct

Subtask #4
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 224 ms 12884 KB Output is correct
3 Correct 368 ms 15656 KB Output is correct
4 Correct 287 ms 16212 KB Output is correct
5 Correct 449 ms 23732 KB Output is correct
6 Correct 445 ms 23636 KB Output is correct
7 Correct 477 ms 23624 KB Output is correct
8 Correct 448 ms 23636 KB Output is correct
9 Correct 455 ms 23636 KB Output is correct
10 Correct 468 ms 23892 KB Output is correct
11 Correct 452 ms 23632 KB Output is correct
12 Correct 470 ms 23888 KB Output is correct
13 Correct 457 ms 24256 KB Output is correct
14 Correct 465 ms 25628 KB Output is correct
15 Correct 499 ms 30504 KB Output is correct
16 Correct 420 ms 24404 KB Output is correct
17 Correct 468 ms 24464 KB Output is correct
18 Correct 438 ms 24404 KB Output is correct
19 Correct 257 ms 20564 KB Output is correct
20 Correct 298 ms 20496 KB Output is correct
21 Correct 274 ms 20556 KB Output is correct
22 Correct 258 ms 20540 KB Output is correct
23 Correct 242 ms 20816 KB Output is correct
24 Correct 243 ms 20584 KB Output is correct
25 Correct 264 ms 20560 KB Output is correct
26 Correct 277 ms 20560 KB Output is correct
27 Correct 256 ms 20560 KB Output is correct
28 Correct 272 ms 20580 KB Output is correct
29 Correct 275 ms 20816 KB Output is correct
30 Correct 272 ms 21076 KB Output is correct
31 Correct 257 ms 21184 KB Output is correct
32 Correct 276 ms 21876 KB Output is correct
33 Correct 266 ms 24144 KB Output is correct
34 Correct 256 ms 27536 KB Output is correct

Subtask #5
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 456 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 655 ms 20084 KB Output is correct
5 Correct 586 ms 21328 KB Output is correct
6 Correct 643 ms 26960 KB Output is correct
7 Correct 738 ms 30288 KB Output is correct
8 Correct 731 ms 30036 KB Output is correct
9 Correct 745 ms 30032 KB Output is correct
10 Correct 760 ms 30016 KB Output is correct
11 Correct 716 ms 30208 KB Output is correct
12 Correct 701 ms 30124 KB Output is correct
13 Correct 733 ms 30288 KB Output is correct
14 Correct 31 ms 10208 KB Output is correct

Subtask #6
41.0 / 41.0

# 결과 실행 시간 메모리 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 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 472 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 456 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 456 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 4 ms 856 KB Output is correct
31 Correct 4 ms 664 KB Output is correct
32 Correct 5 ms 860 KB Output is correct
33 Correct 5 ms 1012 KB Output is correct
34 Correct 5 ms 860 KB Output is correct
35 Correct 5 ms 992 KB Output is correct
36 Correct 5 ms 860 KB Output is correct
37 Correct 6 ms 1000 KB Output is correct
38 Correct 2 ms 856 KB Output is correct
39 Correct 2 ms 860 KB Output is correct
40 Correct 3 ms 1368 KB Output is correct
41 Correct 2 ms 1116 KB Output is correct
42 Correct 2 ms 1116 KB Output is correct
43 Correct 2 ms 860 KB Output is correct
44 Correct 3 ms 1112 KB Output is correct
45 Correct 3 ms 1116 KB Output is correct
46 Correct 3 ms 860 KB Output is correct
47 Correct 3 ms 860 KB Output is correct
48 Correct 3 ms 1112 KB Output is correct
49 Correct 3 ms 860 KB Output is correct
50 Correct 3 ms 860 KB Output is correct
51 Correct 3 ms 860 KB Output is correct
52 Correct 3 ms 860 KB Output is correct
53 Correct 4 ms 928 KB Output is correct
54 Correct 4 ms 860 KB Output is correct
55 Correct 3 ms 856 KB Output is correct
56 Correct 1 ms 600 KB Output is correct
57 Correct 1 ms 604 KB Output is correct
58 Correct 5 ms 860 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 1 ms 604 KB Output is correct
62 Correct 76 ms 22788 KB Output is correct
63 Correct 64 ms 27144 KB Output is correct
64 Correct 75 ms 30804 KB Output is correct
65 Correct 97 ms 35924 KB Output is correct
66 Correct 95 ms 35920 KB Output is correct
67 Correct 98 ms 35924 KB Output is correct
68 Correct 96 ms 36064 KB Output is correct
69 Correct 101 ms 35920 KB Output is correct
70 Correct 96 ms 35404 KB Output is correct
71 Correct 99 ms 35408 KB Output is correct
72 Correct 93 ms 35664 KB Output is correct
73 Correct 42 ms 29008 KB Output is correct
74 Correct 99 ms 35668 KB Output is correct
75 Correct 32 ms 9808 KB Output is correct
76 Correct 1 ms 344 KB Output is correct
77 Correct 224 ms 12884 KB Output is correct
78 Correct 368 ms 15656 KB Output is correct
79 Correct 287 ms 16212 KB Output is correct
80 Correct 449 ms 23732 KB Output is correct
81 Correct 445 ms 23636 KB Output is correct
82 Correct 477 ms 23624 KB Output is correct
83 Correct 448 ms 23636 KB Output is correct
84 Correct 455 ms 23636 KB Output is correct
85 Correct 468 ms 23892 KB Output is correct
86 Correct 452 ms 23632 KB Output is correct
87 Correct 470 ms 23888 KB Output is correct
88 Correct 457 ms 24256 KB Output is correct
89 Correct 465 ms 25628 KB Output is correct
90 Correct 499 ms 30504 KB Output is correct
91 Correct 420 ms 24404 KB Output is correct
92 Correct 468 ms 24464 KB Output is correct
93 Correct 438 ms 24404 KB Output is correct
94 Correct 257 ms 20564 KB Output is correct
95 Correct 298 ms 20496 KB Output is correct
96 Correct 274 ms 20556 KB Output is correct
97 Correct 258 ms 20540 KB Output is correct
98 Correct 242 ms 20816 KB Output is correct
99 Correct 243 ms 20584 KB Output is correct
100 Correct 264 ms 20560 KB Output is correct
101 Correct 277 ms 20560 KB Output is correct
102 Correct 256 ms 20560 KB Output is correct
103 Correct 272 ms 20580 KB Output is correct
104 Correct 275 ms 20816 KB Output is correct
105 Correct 272 ms 21076 KB Output is correct
106 Correct 257 ms 21184 KB Output is correct
107 Correct 276 ms 21876 KB Output is correct
108 Correct 266 ms 24144 KB Output is correct
109 Correct 256 ms 27536 KB Output is correct
110 Correct 1 ms 348 KB Output is correct
111 Correct 1 ms 456 KB Output is correct
112 Correct 1 ms 604 KB Output is correct
113 Correct 655 ms 20084 KB Output is correct
114 Correct 586 ms 21328 KB Output is correct
115 Correct 643 ms 26960 KB Output is correct
116 Correct 738 ms 30288 KB Output is correct
117 Correct 731 ms 30036 KB Output is correct
118 Correct 745 ms 30032 KB Output is correct
119 Correct 760 ms 30016 KB Output is correct
120 Correct 716 ms 30208 KB Output is correct
121 Correct 701 ms 30124 KB Output is correct
122 Correct 733 ms 30288 KB Output is correct
123 Correct 31 ms 10208 KB Output is correct
124 Correct 408 ms 28600 KB Output is correct
125 Correct 301 ms 24656 KB Output is correct
126 Correct 508 ms 29660 KB Output is correct
127 Correct 487 ms 29692 KB Output is correct
128 Correct 534 ms 29664 KB Output is correct
129 Correct 500 ms 29696 KB Output is correct
130 Correct 446 ms 29708 KB Output is correct
131 Correct 115 ms 35408 KB Output is correct
132 Correct 110 ms 37004 KB Output is correct
133 Correct 114 ms 31572 KB Output is correct
134 Correct 286 ms 26760 KB Output is correct
135 Correct 307 ms 26544 KB Output is correct
136 Correct 296 ms 26676 KB Output is correct
137 Correct 176 ms 30020 KB Output is correct
138 Correct 170 ms 30028 KB Output is correct
139 Correct 184 ms 30024 KB Output is correct
140 Correct 175 ms 30016 KB Output is correct
141 Correct 177 ms 30048 KB Output is correct
142 Correct 199 ms 30052 KB Output is correct
143 Correct 67 ms 18000 KB Output is correct
144 Correct 452 ms 29400 KB Output is correct