oj.uz

Submission #889597

# Submission time Handle Problem Language Result Execution time Memory
889597 2023-12-20T03:40:52 Z vjudge1 Tourism (JOI23_tourism) C++17
10 / 100
 4353 ms 23144 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#pragma GCC target("avx,avx2,fma")
#pragma GCC optimize("Ofast,unroll-loops")
#define pii pair<int,int>
using namespace __gnu_pbds;
using namespace std;
#define pb push_back
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define int long long
#define f first
#define s second
#define pii pair<int,int>
template<class T>bool umax(T &a,T b){if(a<b){a=b;return true;}return false;}
template<class T>bool umin(T &a,T b){if(b<a){a=b;return true;}return false;}
typedef tree<int, null_type, less_equal<int>, rb_tree_tag,
	tree_order_statistics_node_update> ordered_set;
const int mod= 1e9 +7;
const int N=1e5*4;

int binpow (int a, int n) {
	if (n == 0)
		return 1;
	if (n % 2 == 1)
		return binpow (a, n-1) * a;
	else {
		int b = binpow (a, n/2);
		return b * b;
	}
}
vector<int>vis(N+1),vis1(N+1);
vector<int>v[N];
pii t[N*4];

void build(int tl,int tr,int v){
	if(tl==tr){
		t[v].f = vis[tl];
		t[v].s = vis[tl];
		return;
	}
	int tm = (tl+tr)/2;
	build(tl,tm,v*2);
	build(tm+1,tr,v*2+1);
	t[v].f = max(t[v*2].f,t[v*2+1].f);
	t[v].s = min(t[v*2].s,t[v*2+1].s);
}

pii get(int l,int r,int v,int tl,int tr){
	if(tl>r||tr<l)return {-1,mod};
	if(l<=tl&&tr<=r){
		return t[v];
	}
	int tm = (tl + tr)/2;
	pii x,y;
	x = get(l,r,v*2,tl,tm);
	y = get(l,r,v*2+1,tm+1,tr);
	pii val;
	val.f = max(x.f,y.f);
	val.s = min(x.s,y.s);
	return val;
}

void solve(){
	
	int n,q,m,k;
	cin>>n>>m>>q;
	
	for(int i = 1;i<n;i++){
		int a,b;
		cin>>a>>b;
		v[a].pb(b);
		v[b].pb(a);
	}
	
	for(int i = 1;i<=m;i++){
		int a;
		cin>>a;
		vis[i] = a;
		vis1[a] = i;
	}
	if(n<=2000){
		while (q--)
		{
			int l , r;
			cin>>l>>r;
			/*for (int i = 0; i < n + 1; i++){
				dist[i] = mod;
			}*/
			vector<int>dist(n+1);
			queue<pii>q;
			q.push({vis[l],-1});
			dist[vis[l]] = 1;
			vector<int>pred(n+1);
			while(!q.empty()){
				auto [x,pr] = q.front();
				q.pop();
				
				for(auto to:v[x]){
					if(to!=pr){	
						dist[to] = dist[x] + 1;
						pred[to] = x;
						q.push({to,x});
					}
				}
			}
			vector<int>g(n+1);
			for(int i = l + 1;i<=r;i++){
				int y = vis[i];
				while(y!=vis[l]){
					g[y] = 1;
					y = pred[y];
				}
			}
			int cnt = 0;
			for(int i = 1;i<=n;i++)cnt+=g[i];
			cout<<cnt + 1<<"\n";
			
			
		}
	
	}
	else{
		build(1,n,1);
		while(q--){
			int l,r;
			cin>>l>>r;
			pii x = get(l,r,1,1,n);
			cout<<x.f - x.s + 1<<"\n";
		}
		
		
	}







}

 signed main()
{
//	freopen("seq.in", "r", stdin);
//  freopen("seq.out", "w", stdout);
	ios_base::sync_with_stdio(0);cin.tie(NULL);cout.tie(NULL);
	int tt=1;//cin>>tt;
	while(tt--)solve();

}

Compilation message

tourism.cpp: In function 'void solve()':
tourism.cpp:67:12: warning: unused variable 'k' [-Wunused-variable]
   67 |  int n,q,m,k;
      |            ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 16224 KB Output is correct
2 Correct 5 ms 16228 KB Output is correct
3 Correct 5 ms 16232 KB Output is correct
4 Correct 6 ms 16488 KB Output is correct
5 Correct 5 ms 16396 KB Output is correct
6 Correct 5 ms 16208 KB Output is correct
7 Correct 5 ms 16388 KB Output is correct
8 Correct 5 ms 16220 KB Output is correct
9 Correct 6 ms 16484 KB Output is correct
10 Correct 6 ms 16232 KB Output is correct
11 Correct 6 ms 16232 KB Output is correct
12 Correct 7 ms 16412 KB Output is correct
13 Correct 6 ms 16224 KB Output is correct
14 Correct 7 ms 16392 KB Output is correct
15 Correct 11 ms 16216 KB Output is correct
16 Correct 10 ms 16220 KB Output is correct
17 Correct 10 ms 16408 KB Output is correct
18 Correct 8 ms 16220 KB Output is correct
19 Correct 9 ms 16392 KB Output is correct
20 Correct 9 ms 16224 KB Output is correct
21 Correct 5 ms 16220 KB Output is correct
22 Correct 6 ms 16424 KB Output is correct
23 Correct 5 ms 16220 KB Output is correct
24 Correct 5 ms 16220 KB Output is correct
25 Correct 5 ms 16220 KB Output is correct
26 Correct 5 ms 16220 KB Output is correct
27 Correct 4 ms 16224 KB Output is correct
28 Correct 5 ms 16224 KB Output is correct
29 Correct 6 ms 16220 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 16224 KB Output is correct
2 Correct 5 ms 16228 KB Output is correct
3 Correct 5 ms 16232 KB Output is correct
4 Correct 6 ms 16488 KB Output is correct
5 Correct 5 ms 16396 KB Output is correct
6 Correct 5 ms 16208 KB Output is correct
7 Correct 5 ms 16388 KB Output is correct
8 Correct 5 ms 16220 KB Output is correct
9 Correct 6 ms 16484 KB Output is correct
10 Correct 6 ms 16232 KB Output is correct
11 Correct 6 ms 16232 KB Output is correct
12 Correct 7 ms 16412 KB Output is correct
13 Correct 6 ms 16224 KB Output is correct
14 Correct 7 ms 16392 KB Output is correct
15 Correct 11 ms 16216 KB Output is correct
16 Correct 10 ms 16220 KB Output is correct
17 Correct 10 ms 16408 KB Output is correct
18 Correct 8 ms 16220 KB Output is correct
19 Correct 9 ms 16392 KB Output is correct
20 Correct 9 ms 16224 KB Output is correct
21 Correct 5 ms 16220 KB Output is correct
22 Correct 6 ms 16424 KB Output is correct
23 Correct 5 ms 16220 KB Output is correct
24 Correct 5 ms 16220 KB Output is correct
25 Correct 5 ms 16220 KB Output is correct
26 Correct 5 ms 16220 KB Output is correct
27 Correct 4 ms 16224 KB Output is correct
28 Correct 5 ms 16224 KB Output is correct
29 Correct 6 ms 16220 KB Output is correct
30 Correct 48 ms 16520 KB Output is correct
31 Correct 56 ms 16480 KB Output is correct
32 Correct 91 ms 16556 KB Output is correct
33 Correct 89 ms 16480 KB Output is correct
34 Correct 84 ms 16536 KB Output is correct
35 Correct 151 ms 16476 KB Output is correct
36 Correct 163 ms 16564 KB Output is correct
37 Correct 160 ms 16540 KB Output is correct
38 Correct 1439 ms 16732 KB Output is correct
39 Correct 1423 ms 16724 KB Output is correct
40 Correct 1425 ms 16524 KB Output is correct
41 Correct 4297 ms 16724 KB Output is correct
42 Correct 3927 ms 16520 KB Output is correct
43 Correct 4353 ms 16980 KB Output is correct
44 Correct 666 ms 16516 KB Output is correct
45 Correct 555 ms 16520 KB Output is correct
46 Correct 654 ms 16724 KB Output is correct
47 Correct 2017 ms 16540 KB Output is correct
48 Correct 1368 ms 16532 KB Output is correct
49 Correct 2050 ms 16784 KB Output is correct
50 Correct 33 ms 16476 KB Output is correct
51 Correct 34 ms 16560 KB Output is correct
52 Correct 33 ms 16472 KB Output is correct
53 Correct 33 ms 16476 KB Output is correct
54 Correct 33 ms 16472 KB Output is correct
55 Correct 34 ms 16568 KB Output is correct
56 Correct 6 ms 16220 KB Output is correct
57 Correct 31 ms 16472 KB Output is correct
58 Correct 49 ms 16472 KB Output is correct

Subtask #3
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 16220 KB Output is correct
2 Correct 4 ms 16132 KB Output is correct
3 Correct 6 ms 16220 KB Output is correct
4 Incorrect 48 ms 22280 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 16472 KB Output is correct
2 Incorrect 22 ms 20676 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 16216 KB Output is correct
2 Correct 5 ms 16216 KB Output is correct
3 Correct 6 ms 16216 KB Output is correct
4 Incorrect 56 ms 23144 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #6
0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 16224 KB Output is correct
2 Correct 5 ms 16228 KB Output is correct
3 Correct 5 ms 16232 KB Output is correct
4 Correct 6 ms 16488 KB Output is correct
5 Correct 5 ms 16396 KB Output is correct
6 Correct 5 ms 16208 KB Output is correct
7 Correct 5 ms 16388 KB Output is correct
8 Correct 5 ms 16220 KB Output is correct
9 Correct 6 ms 16484 KB Output is correct
10 Correct 6 ms 16232 KB Output is correct
11 Correct 6 ms 16232 KB Output is correct
12 Correct 7 ms 16412 KB Output is correct
13 Correct 6 ms 16224 KB Output is correct
14 Correct 7 ms 16392 KB Output is correct
15 Correct 11 ms 16216 KB Output is correct
16 Correct 10 ms 16220 KB Output is correct
17 Correct 10 ms 16408 KB Output is correct
18 Correct 8 ms 16220 KB Output is correct
19 Correct 9 ms 16392 KB Output is correct
20 Correct 9 ms 16224 KB Output is correct
21 Correct 5 ms 16220 KB Output is correct
22 Correct 6 ms 16424 KB Output is correct
23 Correct 5 ms 16220 KB Output is correct
24 Correct 5 ms 16220 KB Output is correct
25 Correct 5 ms 16220 KB Output is correct
26 Correct 5 ms 16220 KB Output is correct
27 Correct 4 ms 16224 KB Output is correct
28 Correct 5 ms 16224 KB Output is correct
29 Correct 6 ms 16220 KB Output is correct
30 Correct 48 ms 16520 KB Output is correct
31 Correct 56 ms 16480 KB Output is correct
32 Correct 91 ms 16556 KB Output is correct
33 Correct 89 ms 16480 KB Output is correct
34 Correct 84 ms 16536 KB Output is correct
35 Correct 151 ms 16476 KB Output is correct
36 Correct 163 ms 16564 KB Output is correct
37 Correct 160 ms 16540 KB Output is correct
38 Correct 1439 ms 16732 KB Output is correct
39 Correct 1423 ms 16724 KB Output is correct
40 Correct 1425 ms 16524 KB Output is correct
41 Correct 4297 ms 16724 KB Output is correct
42 Correct 3927 ms 16520 KB Output is correct
43 Correct 4353 ms 16980 KB Output is correct
44 Correct 666 ms 16516 KB Output is correct
45 Correct 555 ms 16520 KB Output is correct
46 Correct 654 ms 16724 KB Output is correct
47 Correct 2017 ms 16540 KB Output is correct
48 Correct 1368 ms 16532 KB Output is correct
49 Correct 2050 ms 16784 KB Output is correct
50 Correct 33 ms 16476 KB Output is correct
51 Correct 34 ms 16560 KB Output is correct
52 Correct 33 ms 16472 KB Output is correct
53 Correct 33 ms 16476 KB Output is correct
54 Correct 33 ms 16472 KB Output is correct
55 Correct 34 ms 16568 KB Output is correct
56 Correct 6 ms 16220 KB Output is correct
57 Correct 31 ms 16472 KB Output is correct
58 Correct 49 ms 16472 KB Output is correct
59 Correct 5 ms 16220 KB Output is correct
60 Correct 4 ms 16132 KB Output is correct
61 Correct 6 ms 16220 KB Output is correct
62 Incorrect 48 ms 22280 KB Output isn't correct
63 Halted 0 ms 0 KB -