oj.uz

답안 #1119259

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1119259 2024-11-26T17:44:26 Z MrAndria Tourism (JOI23_tourism) C++14
28 / 100
 5000 ms 22592 KB 
#pragma GCC optimize("Ofast")
#pragma GCC optimize ("O3")
#pragma GCC optimization ("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,fma")
#include <bits/stdc++.h>
using namespace std;
#define ff first
#define ss second
#define pb push_back
//#define int long long
int n,k,u,v,tin[200005],m,num[200005],val[200005],l,r,ans[200005],a[200005],sz,timer=0,dst[200005],lg,up[200005][25],tout[200005],q;
pair <pair <int,int> ,int> query[200005];
vector <int> adj[100005];
set <int> s;
void dfs(int x,int p,int ds){
    tin[x]=timer++;
    val[tin[x]]=x;
    dst[x]=ds;
    up[x][0]=p;
    for (int i = 1; i <= lg; ++i)
        up[x][i] = up[up[x][i-1]][i-1];
    for(int u=0;u<adj[x].size();u++){
        if(adj[x][u]!=p){
            dfs(adj[x][u],x,ds+1);

        }
    }
    tout[x] = timer++;
}
bool is_ancestor(int u, int v)
{
    return tin[u] <= tin[v] && tout[u] >= tout[v];
}

int lca(int u, int v)
{
    if (is_ancestor(u, v))
        return u;
    if (is_ancestor(v, u))
        return v;
    for (int i = lg; i >= 0; --i) {
        if (!is_ancestor(up[u][i], v))
            u = up[u][i];
    }
    return up[u][0];
}
int dist(int x,int y){
	return dst[x]+dst[y]-2*dst[lca(x,y)];
}
inline void add(int x){
    // cout<<x<<"-"<<tin[x]<<endl;
    num[x]++;
    if(num[x]>1){
        return;
    }
    if(s.size()==0){
        s.insert(tin[x]);
        sz=0;
 
        return;
    }
    s.insert(tin[x]);
    
	set <int> :: iterator it=s.lower_bound(tin[x]);
    set <int> :: iterator it1=it;
    set <int> :: iterator it2=it;
    if(it1==s.begin()){
        it1=s.end();
 
    }
    it1--;
    it2++;
    if(it2==s.end()){
        it2=s.begin();
 
    }
	// cout<<(*it1)<<" "<<(*it)<<" "<<(*it2)<<" "<<val[(*it1)]<<" "<<val[(*it)]<<" "<<val[(*it2)]<<" "<<s.size()<<" "<<dist(val[(*it1)],val[(*it)])<<" "<<dist(val[(*it)],val[(*it2)])<<" "<<dist(val[(*it1)],val[(*it2)])<<" add\n";
    sz+=(dist(val[(*it1)],val[(*it)])+dist(val[(*it)],val[(*it2)])-dist(val[(*it1)],val[(*it2)]));
//    cout<<" "<<sz<<endl;
}
inline void remove(int x){
    num[x]--;
    if(num[x]>0){
        return;
    }
    set <int> :: iterator it=s.lower_bound(tin[x]);
    if(s.size()==1){
        s.erase(it);
//        cout<<s.size()<<endl;
        sz=0;
 
        return;
    }
    set <int> :: iterator it1=it;
    set <int> :: iterator it2=it;
    if(it1==s.begin()){
        it1=s.end();
 
    }
    it1--;
    it2++;
    if(it2==s.end()){
        it2=s.begin();
 
    }
//    cout<<(*it1)<<" "<<(*it)<<" "<<(*it2)<<" "<<val[(*it1)]<<" "<<val[(*it)]<<" "<<val[(*it2)]<<" "<<s.size()<<" "<<dist(val[(*it1)],val[(*it)])<<" "<<dist(val[(*it)],val[(*it2)])<<" "<<dist(val[(*it1)],val[(*it2)])<<" remove";
    sz-=(dist(val[(*it1)],val[(*it)])+dist(val[(*it)],val[(*it2)])-dist(val[(*it1)],val[(*it2)]));
    
    s.erase(it);
    
//    cout<<" "<<sz<<endl;
}
bool comp(pair <pair <int,int>,int> a, pair <pair <int,int> ,int > b){
    if(a.ff.ff/k ==b.ff.ff/k){
        return a.ff.ss<b.ff.ss;
    }
    return (a.ff.ff)/k < (b.ff.ff)/k;
}
int main(){
    scanf("%d%d%d",&n,&m,&q);

    lg=ceil(log2(n));
    k=ceil(sqrt(m));
    
    for(int i=1;i<=n-1;i++){
        scanf("%d%d",&u,&v);
        adj[u].pb(v);
        adj[v].pb(u);

    }
    for(int i=1;i<=m;i++){
        scanf("%d",&a[i]);
    }
    for(int i=1;i<=q;i++){
        scanf("%d%d",&query[i].ff.ff,&query[i].ff.ss);
        query[i].ss=i;
        
    }

    dfs(1,1,0);
    sort(query+1,query+q+1,comp);
    int tl=1;
    int tr=1;
    int l,r;
    add(a[tl]);
    for(int i=1;i<=q;i++){
    	l=query[i].ff.ff;
        r=query[i].ff.ss;
        while(tr<r){
            tr++;
            add(a[tr]);

        }
        while(l<tl){
            tl--;
            add(a[tl]);
        }
        while(r<tr){
            remove(a[tr]);
            tr--;
        }

        while(tl<l){
            remove(a[tl]);
            tl++;
        }
        
        ans[query[i].ss]=(sz/2)+1;

    }
    for(int i=1;i<=q;i++){
        printf("%d ",ans[i]);
    }
}

Compilation message

tourism.cpp:3: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    3 | #pragma GCC optimization ("unroll-loops")
      | 
tourism.cpp: In function 'void dfs(int, int, int)':
tourism.cpp:22:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |     for(int u=0;u<adj[x].size();u++){
      |                 ~^~~~~~~~~~~~~~
tourism.cpp: In function 'int main()':
tourism.cpp:120:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  120 |     scanf("%d%d%d",&n,&m,&q);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
tourism.cpp:126:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  126 |         scanf("%d%d",&u,&v);
      |         ~~~~~^~~~~~~~~~~~~~
tourism.cpp:132:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  132 |         scanf("%d",&a[i]);
      |         ~~~~~^~~~~~~~~~~~
tourism.cpp:135:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  135 |         scanf("%d%d",&query[i].ff.ff,&query[i].ff.ss);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 2640 KB Output is correct
2 Correct 3 ms 2640 KB Output is correct
3 Correct 3 ms 2640 KB Output is correct
4 Correct 3 ms 2640 KB Output is correct
5 Correct 3 ms 2892 KB Output is correct
6 Correct 3 ms 2640 KB Output is correct
7 Correct 3 ms 2640 KB Output is correct
8 Correct 3 ms 2896 KB Output is correct
9 Correct 6 ms 2896 KB Output is correct
10 Correct 4 ms 2916 KB Output is correct
11 Correct 4 ms 2896 KB Output is correct
12 Correct 3 ms 2896 KB Output is correct
13 Correct 4 ms 2896 KB Output is correct
14 Correct 4 ms 2896 KB Output is correct
15 Correct 3 ms 2896 KB Output is correct
16 Correct 4 ms 2896 KB Output is correct
17 Correct 5 ms 2920 KB Output is correct
18 Correct 5 ms 2896 KB Output is correct
19 Correct 5 ms 2896 KB Output is correct
20 Correct 4 ms 2896 KB Output is correct
21 Correct 5 ms 2896 KB Output is correct
22 Correct 5 ms 2896 KB Output is correct
23 Correct 4 ms 2896 KB Output is correct
24 Correct 6 ms 2800 KB Output is correct
25 Correct 4 ms 2896 KB Output is correct
26 Correct 6 ms 2908 KB Output is correct
27 Correct 3 ms 2640 KB Output is correct
28 Correct 4 ms 2640 KB Output is correct
29 Correct 4 ms 2896 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 2640 KB Output is correct
2 Correct 3 ms 2640 KB Output is correct
3 Correct 3 ms 2640 KB Output is correct
4 Correct 3 ms 2640 KB Output is correct
5 Correct 3 ms 2892 KB Output is correct
6 Correct 3 ms 2640 KB Output is correct
7 Correct 3 ms 2640 KB Output is correct
8 Correct 3 ms 2896 KB Output is correct
9 Correct 6 ms 2896 KB Output is correct
10 Correct 4 ms 2916 KB Output is correct
11 Correct 4 ms 2896 KB Output is correct
12 Correct 3 ms 2896 KB Output is correct
13 Correct 4 ms 2896 KB Output is correct
14 Correct 4 ms 2896 KB Output is correct
15 Correct 3 ms 2896 KB Output is correct
16 Correct 4 ms 2896 KB Output is correct
17 Correct 5 ms 2920 KB Output is correct
18 Correct 5 ms 2896 KB Output is correct
19 Correct 5 ms 2896 KB Output is correct
20 Correct 4 ms 2896 KB Output is correct
21 Correct 5 ms 2896 KB Output is correct
22 Correct 5 ms 2896 KB Output is correct
23 Correct 4 ms 2896 KB Output is correct
24 Correct 6 ms 2800 KB Output is correct
25 Correct 4 ms 2896 KB Output is correct
26 Correct 6 ms 2908 KB Output is correct
27 Correct 3 ms 2640 KB Output is correct
28 Correct 4 ms 2640 KB Output is correct
29 Correct 4 ms 2896 KB Output is correct
30 Correct 24 ms 3164 KB Output is correct
31 Correct 20 ms 3172 KB Output is correct
32 Correct 32 ms 3272 KB Output is correct
33 Correct 37 ms 3152 KB Output is correct
34 Correct 31 ms 3276 KB Output is correct
35 Correct 9 ms 3132 KB Output is correct
36 Correct 8 ms 3176 KB Output is correct
37 Correct 9 ms 3152 KB Output is correct
38 Correct 18 ms 3152 KB Output is correct
39 Correct 18 ms 3328 KB Output is correct
40 Correct 19 ms 3376 KB Output is correct
41 Correct 6 ms 3388 KB Output is correct
42 Correct 7 ms 3152 KB Output is correct
43 Correct 7 ms 3152 KB Output is correct
44 Correct 26 ms 3320 KB Output is correct
45 Correct 22 ms 3340 KB Output is correct
46 Correct 18 ms 3152 KB Output is correct
47 Correct 7 ms 3408 KB Output is correct
48 Correct 5 ms 3152 KB Output is correct
49 Correct 8 ms 3160 KB Output is correct
50 Correct 27 ms 3152 KB Output is correct
51 Correct 31 ms 3064 KB Output is correct
52 Correct 36 ms 3280 KB Output is correct
53 Correct 26 ms 3152 KB Output is correct
54 Correct 29 ms 3152 KB Output is correct
55 Correct 33 ms 3408 KB Output is correct
56 Correct 6 ms 3068 KB Output is correct
57 Correct 5 ms 3152 KB Output is correct
58 Correct 5 ms 3152 KB Output is correct

Subtask #3
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 2808 KB Output is correct
2 Correct 4 ms 2640 KB Output is correct
3 Correct 5 ms 2896 KB Output is correct
4 Execution timed out 5055 ms 19152 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #4
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 2640 KB Output is correct
2 Correct 87 ms 12432 KB Output is correct
3 Correct 103 ms 12860 KB Output is correct
4 Correct 98 ms 14160 KB Output is correct
5 Correct 135 ms 22512 KB Output is correct
6 Correct 144 ms 21832 KB Output is correct
7 Correct 194 ms 20380 KB Output is correct
8 Correct 191 ms 20212 KB Output is correct
9 Correct 194 ms 20040 KB Output is correct
10 Correct 213 ms 19444 KB Output is correct
11 Correct 206 ms 19476 KB Output is correct
12 Correct 179 ms 19528 KB Output is correct
13 Correct 171 ms 20040 KB Output is correct
14 Correct 150 ms 20184 KB Output is correct
15 Correct 201 ms 22088 KB Output is correct
16 Correct 216 ms 21704 KB Output is correct
17 Correct 165 ms 21576 KB Output is correct
18 Correct 155 ms 21576 KB Output is correct
19 Correct 99 ms 22592 KB Output is correct
20 Correct 101 ms 22344 KB Output is correct
21 Correct 137 ms 21064 KB Output is correct
22 Correct 127 ms 20236 KB Output is correct
23 Correct 116 ms 20040 KB Output is correct
24 Correct 141 ms 19580 KB Output is correct
25 Correct 164 ms 19464 KB Output is correct
26 Correct 221 ms 19596 KB Output is correct
27 Correct 234 ms 19580 KB Output is correct
28 Correct 214 ms 19496 KB Output is correct
29 Correct 240 ms 19592 KB Output is correct
30 Correct 191 ms 19504 KB Output is correct
31 Correct 185 ms 20064 KB Output is correct
32 Correct 206 ms 20032 KB Output is correct
33 Correct 237 ms 20548 KB Output is correct
34 Correct 170 ms 22172 KB Output is correct

Subtask #5
0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 2640 KB Output is correct
2 Correct 3 ms 2640 KB Output is correct
3 Correct 4 ms 2896 KB Output is correct
4 Execution timed out 5092 ms 17116 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 2640 KB Output is correct
2 Correct 3 ms 2640 KB Output is correct
3 Correct 3 ms 2640 KB Output is correct
4 Correct 3 ms 2640 KB Output is correct
5 Correct 3 ms 2892 KB Output is correct
6 Correct 3 ms 2640 KB Output is correct
7 Correct 3 ms 2640 KB Output is correct
8 Correct 3 ms 2896 KB Output is correct
9 Correct 6 ms 2896 KB Output is correct
10 Correct 4 ms 2916 KB Output is correct
11 Correct 4 ms 2896 KB Output is correct
12 Correct 3 ms 2896 KB Output is correct
13 Correct 4 ms 2896 KB Output is correct
14 Correct 4 ms 2896 KB Output is correct
15 Correct 3 ms 2896 KB Output is correct
16 Correct 4 ms 2896 KB Output is correct
17 Correct 5 ms 2920 KB Output is correct
18 Correct 5 ms 2896 KB Output is correct
19 Correct 5 ms 2896 KB Output is correct
20 Correct 4 ms 2896 KB Output is correct
21 Correct 5 ms 2896 KB Output is correct
22 Correct 5 ms 2896 KB Output is correct
23 Correct 4 ms 2896 KB Output is correct
24 Correct 6 ms 2800 KB Output is correct
25 Correct 4 ms 2896 KB Output is correct
26 Correct 6 ms 2908 KB Output is correct
27 Correct 3 ms 2640 KB Output is correct
28 Correct 4 ms 2640 KB Output is correct
29 Correct 4 ms 2896 KB Output is correct
30 Correct 24 ms 3164 KB Output is correct
31 Correct 20 ms 3172 KB Output is correct
32 Correct 32 ms 3272 KB Output is correct
33 Correct 37 ms 3152 KB Output is correct
34 Correct 31 ms 3276 KB Output is correct
35 Correct 9 ms 3132 KB Output is correct
36 Correct 8 ms 3176 KB Output is correct
37 Correct 9 ms 3152 KB Output is correct
38 Correct 18 ms 3152 KB Output is correct
39 Correct 18 ms 3328 KB Output is correct
40 Correct 19 ms 3376 KB Output is correct
41 Correct 6 ms 3388 KB Output is correct
42 Correct 7 ms 3152 KB Output is correct
43 Correct 7 ms 3152 KB Output is correct
44 Correct 26 ms 3320 KB Output is correct
45 Correct 22 ms 3340 KB Output is correct
46 Correct 18 ms 3152 KB Output is correct
47 Correct 7 ms 3408 KB Output is correct
48 Correct 5 ms 3152 KB Output is correct
49 Correct 8 ms 3160 KB Output is correct
50 Correct 27 ms 3152 KB Output is correct
51 Correct 31 ms 3064 KB Output is correct
52 Correct 36 ms 3280 KB Output is correct
53 Correct 26 ms 3152 KB Output is correct
54 Correct 29 ms 3152 KB Output is correct
55 Correct 33 ms 3408 KB Output is correct
56 Correct 6 ms 3068 KB Output is correct
57 Correct 5 ms 3152 KB Output is correct
58 Correct 5 ms 3152 KB Output is correct
59 Correct 4 ms 2808 KB Output is correct
60 Correct 4 ms 2640 KB Output is correct
61 Correct 5 ms 2896 KB Output is correct
62 Execution timed out 5055 ms 19152 KB Time limit exceeded
63 Halted 0 ms 0 KB -