oj.uz

답안 #889814

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
889814 2023-12-20T07:26:59 Z vjudge1 Tourism (JOI23_tourism) C++17
35 / 100
 5000 ms 37064 KB 
#include <bits/stdc++.h>
#define ll long long
#define str string
#define ins insert
#define ld long double
#define pb push_back
#define pf push_front
#define pof pop_front()
#define pob pop_back()
#define lb lower_bound
#define ub upper_bound
#define endl "\n"
#define fr first
#define sc second
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define sz size()
#define bc back()
#define ar array
#define vll vector<ll> 
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
template <class _T>
bool chmin(_T &x, const _T &y){
    if(x>y){
        x=y;
        return true;
    }
    return false;
}
template <class _T>
bool chmax(_T &x, const _T &y){
    bool flag=false;
    if (x<y){
        x=y;flag|=true;
    }
    return flag;
}
#define ordered_set tree<ll, null_type,less_equal<ll>, rb_tree_tag,tree_order_statistics_node_update>
void fre(string s){freopen((s+".in").c_str(),"r",stdin);freopen((s+".out").c_str(),"w",stdout);}
void start(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
}
const ll inf=2e18+7;
const ll mod=1e9+7;
const ll N=1e5+7;
const ld eps=1e-9;
vector<vll> g(N);
vector<pair<ll,ll>> t(N*4,{inf,0});
ll val[N];
void build(ll v,ll tl,ll tr){
	if(tl==tr){
		t[v]={val[tl],val[tl]};
		return;
	}
	ll tm=(tl+tr)/2;
	build(v*2,tl,tm);
	build(v*2+1,tm+1,tr);
	t[v]={min(t[v*2].fr,t[v*2+1].fr),max(t[v*2].sc,t[v*2+1].sc)};
}

pair<ll,ll> get(ll v,ll tl,ll tr,ll l,ll r){
	if(tl>r || tr<l)return {inf,0ll};
	if(l<=tl && tr<=r) return t[v];
	ll tm=(tl+tr)/2;
	pair<ll,ll> a=get(v*2,tl,tm,l,r);
	pair<ll,ll> b=get(v*2+1,tm+1,tr,l,r);
	return {min(a.fr,b.fr),max(a.sc,b.sc)};
}

bool f[2005];
ll go(ll v,ll p){
	ll sum=0;
	for(auto i : g[v]){
		if(i==p)continue;
		sum+=go(i,v);
	}
	if(f[v] || sum) return sum+1;
	return sum;
}

ll d[N],p[N][20];
ll tin[N],tout[N],tiktak;
void dfs(ll v){
	tin[v]=++tiktak;
	for(ll i=1;i<18;i++){
		p[v][i]=p[p[v][i-1]][i-1];
	}
	for(auto i :g[v]){
		if(i==p[v][0])continue;
		p[i][0]=v;
		d[i]=d[v]+1;
		dfs(i);
	}
	tout[v]=++tiktak;
}
ll lca(ll a,ll b){
	ll i;
	if(d[a]<d[b])swap(a,b);
	for(i=17;i>=0;i--){
		if(d[a]-d[b]>=(1ll<<i) && d[a]-d[p[a][i]]==(1ll<<i)){
			a=p[a][i];
		}
	}
	if(a==b)return a;
	for(i=17;i>=0;i--){
		if(p[a][i]!=p[b][i]){
			a=p[a][i];
			b=p[b][i];
		}
	}
	return p[a][0];
}
void solve(){
	ll i,j;
	ll n,m,q;
	ll a,b;
	cin>>n>>m>>q;
	bool line=true;
	for(i=1;i<n;i++){
		cin>>a>>b;
		if(a>b)swap(a,b);
		if(b-a!=1)line=false;
		g[a].pb(b);
		g[b].pb(a);
	}
	vector<ll> s(m+1);
	for(i=1;i<=m;i++)cin>>s[i];
	
	if(n<=2000 && m<=2000 && q<=2000){
		for(i=1;i<=q;i++){
			memset(f,false,sizeof(f));
			cin>>a>>b;
			for(j=a;j<=b;j++)f[s[j]]=true;
			cout<<go(s[a],0)<<endl;
		}
		return;
	}
	if(line){
		for(i=1;i<=m;i++)val[i]=s[i];
		build(1,1,m);
		for(i=0;i<q;i++){
			cin>>a>>b;
			pair<ll,ll> x=get(1,1,m,a,b);
			cout<<x.sc-x.fr+1<<endl;
		}
		return;
	}
	dfs(1);
	for(i=1;i<=q;i++){
		cin>>a>>b;
		vector<pair<ll,ll>> v;
		map<ll,ll> mp;
		for(j=a;j<=b;j++){
			if(!mp[s[j]]) v.pb({tin[s[j]],s[j]});
			mp[s[j]]++;
		}
		if(v.sz==1){
			cout<<1<<endl;
			continue;
		}
		sort(all(v));
		ll lc=lca(v[0].sc,v[1].sc),sum=d[v[0].sc]-d[lc]+d[v[1].sc]-d[lc]+1;
		for(j=2;j<(ll)v.sz;j++){
			a=v[j-1].sc;
			b=v[j].sc;
			ll cur=lca(a,b);
			if(cur==a){
				sum+=d[b]-d[a];
				continue;
			}
			ll nlc=lca(lc,b);
			if(nlc==lc){
				sum+=d[b]-d[cur];
			}else{
				sum+=d[b]-d[nlc]+d[lc]-d[nlc];
				lc=nlc;
			}
		}
		cout<<sum<<endl;
	}
	
}
signed main(){
	start();
    ll t=1;
	//cin>>t;
    while(t--) solve();
    return 0;
}
/*
1
6
5 4 3 2 1 0





*/

Compilation message

tourism.cpp: In function 'void fre(std::string)':
tourism.cpp:42:27: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 | void fre(string s){freopen((s+".in").c_str(),"r",stdin);freopen((s+".out").c_str(),"w",stdout);}
      |                    ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tourism.cpp:42:64: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 | void fre(string s){freopen((s+".in").c_str(),"r",stdin);freopen((s+".out").c_str(),"w",stdout);}
      |                                                         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 11100 KB Output is correct
2 Correct 3 ms 11100 KB Output is correct
3 Correct 3 ms 11096 KB Output is correct
4 Correct 4 ms 11100 KB Output is correct
5 Correct 4 ms 11100 KB Output is correct
6 Correct 4 ms 11156 KB Output is correct
7 Correct 3 ms 11148 KB Output is correct
8 Correct 4 ms 11152 KB Output is correct
9 Correct 4 ms 11096 KB Output is correct
10 Correct 4 ms 11100 KB Output is correct
11 Correct 4 ms 11100 KB Output is correct
12 Correct 4 ms 11100 KB Output is correct
13 Correct 4 ms 11096 KB Output is correct
14 Correct 4 ms 11012 KB Output is correct
15 Correct 4 ms 11100 KB Output is correct
16 Correct 4 ms 11056 KB Output is correct
17 Correct 3 ms 11100 KB Output is correct
18 Correct 4 ms 11100 KB Output is correct
19 Correct 4 ms 11100 KB Output is correct
20 Correct 4 ms 11100 KB Output is correct
21 Correct 3 ms 11100 KB Output is correct
22 Correct 4 ms 11100 KB Output is correct
23 Correct 4 ms 11100 KB Output is correct
24 Correct 4 ms 11100 KB Output is correct
25 Correct 4 ms 11100 KB Output is correct
26 Correct 3 ms 11100 KB Output is correct
27 Correct 3 ms 11100 KB Output is correct
28 Correct 4 ms 11100 KB Output is correct
29 Correct 5 ms 11100 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 11100 KB Output is correct
2 Correct 3 ms 11100 KB Output is correct
3 Correct 3 ms 11096 KB Output is correct
4 Correct 4 ms 11100 KB Output is correct
5 Correct 4 ms 11100 KB Output is correct
6 Correct 4 ms 11156 KB Output is correct
7 Correct 3 ms 11148 KB Output is correct
8 Correct 4 ms 11152 KB Output is correct
9 Correct 4 ms 11096 KB Output is correct
10 Correct 4 ms 11100 KB Output is correct
11 Correct 4 ms 11100 KB Output is correct
12 Correct 4 ms 11100 KB Output is correct
13 Correct 4 ms 11096 KB Output is correct
14 Correct 4 ms 11012 KB Output is correct
15 Correct 4 ms 11100 KB Output is correct
16 Correct 4 ms 11056 KB Output is correct
17 Correct 3 ms 11100 KB Output is correct
18 Correct 4 ms 11100 KB Output is correct
19 Correct 4 ms 11100 KB Output is correct
20 Correct 4 ms 11100 KB Output is correct
21 Correct 3 ms 11100 KB Output is correct
22 Correct 4 ms 11100 KB Output is correct
23 Correct 4 ms 11100 KB Output is correct
24 Correct 4 ms 11100 KB Output is correct
25 Correct 4 ms 11100 KB Output is correct
26 Correct 3 ms 11100 KB Output is correct
27 Correct 3 ms 11100 KB Output is correct
28 Correct 4 ms 11100 KB Output is correct
29 Correct 5 ms 11100 KB Output is correct
30 Correct 28 ms 11100 KB Output is correct
31 Correct 37 ms 11212 KB Output is correct
32 Correct 57 ms 11420 KB Output is correct
33 Correct 57 ms 11216 KB Output is correct
34 Correct 57 ms 11096 KB Output is correct
35 Correct 32 ms 11360 KB Output is correct
36 Correct 33 ms 11100 KB Output is correct
37 Correct 29 ms 11240 KB Output is correct
38 Correct 50 ms 11100 KB Output is correct
39 Correct 48 ms 11096 KB Output is correct
40 Correct 45 ms 11100 KB Output is correct
41 Correct 45 ms 11308 KB Output is correct
42 Correct 51 ms 11300 KB Output is correct
43 Correct 45 ms 11096 KB Output is correct
44 Correct 44 ms 11096 KB Output is correct
45 Correct 45 ms 11100 KB Output is correct
46 Correct 45 ms 11100 KB Output is correct
47 Correct 39 ms 11244 KB Output is correct
48 Correct 40 ms 11240 KB Output is correct
49 Correct 40 ms 11100 KB Output is correct
50 Correct 25 ms 11100 KB Output is correct
51 Correct 30 ms 11240 KB Output is correct
52 Correct 27 ms 11244 KB Output is correct
53 Correct 27 ms 11236 KB Output is correct
54 Correct 26 ms 11236 KB Output is correct
55 Correct 26 ms 11096 KB Output is correct
56 Correct 6 ms 11296 KB Output is correct
57 Correct 27 ms 11224 KB Output is correct
58 Correct 27 ms 11236 KB Output is correct

Subtask #3
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 11100 KB Output is correct
2 Correct 3 ms 11100 KB Output is correct
3 Correct 4 ms 11100 KB Output is correct
4 Correct 56 ms 13908 KB Output is correct
5 Correct 50 ms 14416 KB Output is correct
6 Correct 52 ms 14912 KB Output is correct
7 Correct 73 ms 15756 KB Output is correct
8 Correct 76 ms 15692 KB Output is correct
9 Correct 74 ms 15560 KB Output is correct
10 Correct 74 ms 15772 KB Output is correct
11 Correct 74 ms 15696 KB Output is correct
12 Correct 67 ms 15696 KB Output is correct
13 Correct 77 ms 15756 KB Output is correct
14 Correct 74 ms 15696 KB Output is correct
15 Correct 34 ms 14416 KB Output is correct
16 Correct 61 ms 15184 KB Output is correct
17 Correct 53 ms 12080 KB Output is correct

Subtask #4
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 11100 KB Output is correct
2 Correct 48 ms 22432 KB Output is correct
3 Correct 66 ms 24864 KB Output is correct
4 Correct 77 ms 25376 KB Output is correct
5 Correct 105 ms 36552 KB Output is correct
6 Correct 112 ms 34064 KB Output is correct
7 Correct 108 ms 32416 KB Output is correct
8 Correct 115 ms 31828 KB Output is correct
9 Correct 105 ms 31576 KB Output is correct
10 Correct 104 ms 31572 KB Output is correct
11 Correct 106 ms 31616 KB Output is correct
12 Correct 112 ms 31580 KB Output is correct
13 Correct 93 ms 33084 KB Output is correct
14 Correct 91 ms 32848 KB Output is correct
15 Correct 89 ms 33540 KB Output is correct
16 Correct 101 ms 36552 KB Output is correct
17 Correct 105 ms 35824 KB Output is correct
18 Correct 115 ms 35820 KB Output is correct
19 Correct 105 ms 37064 KB Output is correct
20 Correct 100 ms 36452 KB Output is correct
21 Correct 101 ms 33928 KB Output is correct
22 Correct 123 ms 33016 KB Output is correct
23 Correct 106 ms 32572 KB Output is correct
24 Correct 111 ms 32336 KB Output is correct
25 Correct 107 ms 32080 KB Output is correct
26 Correct 137 ms 32336 KB Output is correct
27 Correct 110 ms 32172 KB Output is correct
28 Correct 121 ms 32136 KB Output is correct
29 Correct 140 ms 32156 KB Output is correct
30 Correct 113 ms 32168 KB Output is correct
31 Correct 126 ms 32424 KB Output is correct
32 Correct 106 ms 32340 KB Output is correct
33 Correct 95 ms 32344 KB Output is correct
34 Correct 81 ms 33156 KB Output is correct

Subtask #5
0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 11096 KB Output is correct
2 Correct 3 ms 11100 KB Output is correct
3 Correct 4 ms 11096 KB Output is correct
4 Execution timed out 5056 ms 26464 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #6
0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 11100 KB Output is correct
2 Correct 3 ms 11100 KB Output is correct
3 Correct 3 ms 11096 KB Output is correct
4 Correct 4 ms 11100 KB Output is correct
5 Correct 4 ms 11100 KB Output is correct
6 Correct 4 ms 11156 KB Output is correct
7 Correct 3 ms 11148 KB Output is correct
8 Correct 4 ms 11152 KB Output is correct
9 Correct 4 ms 11096 KB Output is correct
10 Correct 4 ms 11100 KB Output is correct
11 Correct 4 ms 11100 KB Output is correct
12 Correct 4 ms 11100 KB Output is correct
13 Correct 4 ms 11096 KB Output is correct
14 Correct 4 ms 11012 KB Output is correct
15 Correct 4 ms 11100 KB Output is correct
16 Correct 4 ms 11056 KB Output is correct
17 Correct 3 ms 11100 KB Output is correct
18 Correct 4 ms 11100 KB Output is correct
19 Correct 4 ms 11100 KB Output is correct
20 Correct 4 ms 11100 KB Output is correct
21 Correct 3 ms 11100 KB Output is correct
22 Correct 4 ms 11100 KB Output is correct
23 Correct 4 ms 11100 KB Output is correct
24 Correct 4 ms 11100 KB Output is correct
25 Correct 4 ms 11100 KB Output is correct
26 Correct 3 ms 11100 KB Output is correct
27 Correct 3 ms 11100 KB Output is correct
28 Correct 4 ms 11100 KB Output is correct
29 Correct 5 ms 11100 KB Output is correct
30 Correct 28 ms 11100 KB Output is correct
31 Correct 37 ms 11212 KB Output is correct
32 Correct 57 ms 11420 KB Output is correct
33 Correct 57 ms 11216 KB Output is correct
34 Correct 57 ms 11096 KB Output is correct
35 Correct 32 ms 11360 KB Output is correct
36 Correct 33 ms 11100 KB Output is correct
37 Correct 29 ms 11240 KB Output is correct
38 Correct 50 ms 11100 KB Output is correct
39 Correct 48 ms 11096 KB Output is correct
40 Correct 45 ms 11100 KB Output is correct
41 Correct 45 ms 11308 KB Output is correct
42 Correct 51 ms 11300 KB Output is correct
43 Correct 45 ms 11096 KB Output is correct
44 Correct 44 ms 11096 KB Output is correct
45 Correct 45 ms 11100 KB Output is correct
46 Correct 45 ms 11100 KB Output is correct
47 Correct 39 ms 11244 KB Output is correct
48 Correct 40 ms 11240 KB Output is correct
49 Correct 40 ms 11100 KB Output is correct
50 Correct 25 ms 11100 KB Output is correct
51 Correct 30 ms 11240 KB Output is correct
52 Correct 27 ms 11244 KB Output is correct
53 Correct 27 ms 11236 KB Output is correct
54 Correct 26 ms 11236 KB Output is correct
55 Correct 26 ms 11096 KB Output is correct
56 Correct 6 ms 11296 KB Output is correct
57 Correct 27 ms 11224 KB Output is correct
58 Correct 27 ms 11236 KB Output is correct
59 Correct 3 ms 11100 KB Output is correct
60 Correct 3 ms 11100 KB Output is correct
61 Correct 4 ms 11100 KB Output is correct
62 Correct 56 ms 13908 KB Output is correct
63 Correct 50 ms 14416 KB Output is correct
64 Correct 52 ms 14912 KB Output is correct
65 Correct 73 ms 15756 KB Output is correct
66 Correct 76 ms 15692 KB Output is correct
67 Correct 74 ms 15560 KB Output is correct
68 Correct 74 ms 15772 KB Output is correct
69 Correct 74 ms 15696 KB Output is correct
70 Correct 67 ms 15696 KB Output is correct
71 Correct 77 ms 15756 KB Output is correct
72 Correct 74 ms 15696 KB Output is correct
73 Correct 34 ms 14416 KB Output is correct
74 Correct 61 ms 15184 KB Output is correct
75 Correct 53 ms 12080 KB Output is correct
76 Correct 3 ms 11100 KB Output is correct
77 Correct 48 ms 22432 KB Output is correct
78 Correct 66 ms 24864 KB Output is correct
79 Correct 77 ms 25376 KB Output is correct
80 Correct 105 ms 36552 KB Output is correct
81 Correct 112 ms 34064 KB Output is correct
82 Correct 108 ms 32416 KB Output is correct
83 Correct 115 ms 31828 KB Output is correct
84 Correct 105 ms 31576 KB Output is correct
85 Correct 104 ms 31572 KB Output is correct
86 Correct 106 ms 31616 KB Output is correct
87 Correct 112 ms 31580 KB Output is correct
88 Correct 93 ms 33084 KB Output is correct
89 Correct 91 ms 32848 KB Output is correct
90 Correct 89 ms 33540 KB Output is correct
91 Correct 101 ms 36552 KB Output is correct
92 Correct 105 ms 35824 KB Output is correct
93 Correct 115 ms 35820 KB Output is correct
94 Correct 105 ms 37064 KB Output is correct
95 Correct 100 ms 36452 KB Output is correct
96 Correct 101 ms 33928 KB Output is correct
97 Correct 123 ms 33016 KB Output is correct
98 Correct 106 ms 32572 KB Output is correct
99 Correct 111 ms 32336 KB Output is correct
100 Correct 107 ms 32080 KB Output is correct
101 Correct 137 ms 32336 KB Output is correct
102 Correct 110 ms 32172 KB Output is correct
103 Correct 121 ms 32136 KB Output is correct
104 Correct 140 ms 32156 KB Output is correct
105 Correct 113 ms 32168 KB Output is correct
106 Correct 126 ms 32424 KB Output is correct
107 Correct 106 ms 32340 KB Output is correct
108 Correct 95 ms 32344 KB Output is correct
109 Correct 81 ms 33156 KB Output is correct
110 Correct 3 ms 11096 KB Output is correct
111 Correct 3 ms 11100 KB Output is correct
112 Correct 4 ms 11096 KB Output is correct
113 Execution timed out 5056 ms 26464 KB Time limit exceeded
114 Halted 0 ms 0 KB -