oj.uz

Submission #865291

# Submission time Handle Problem Language Result Execution time Memory
865291 2023-10-24T07:10:23 Z owoovo Tourism (JOI23_tourism) C++14
24 / 100
 5000 ms 22028 KB 
#include<bits/stdc++.h>
#define pii pair<pair<int,int>,int>
#define F first 
#define S second
using namespace std;
int n,m,q,bit[100010],v[100010],c[100010],dp[25][100010],depth[100010];
vector<int> e[100010];
vector<pii> qu;
void dfs(int now,int last){
    dp[0][now]=last;
    depth[now]=depth[last]+1;
    for(auto x:e[now]){
        if(x==last)continue;
        dfs(x,now);
    }
    return;
}
bool cmp(pii a, pii b){
    return a.S<b.S;
}
void modify(int x,int p){
    while(p<=m){
        bit[p]+=x;
        p+=p&(-p);
    }
    return ;
}
int que(int p){
    int ans=0;
    while(p){
        ans+=bit[p];
        p-=p&(-p);
    }
    return ans;
}
int lca(int a,int b){
    if(depth[a]>depth[b])swap(a,b);
    for(int i=19;i>=0;i--){
        if(depth[a]+(1<<i)<=depth[b]){
            b=dp[i][b];
        }
    }
    if(a==b)return a;
    for(int i=19;i>=0;i--){
        if(dp[i][a]!=dp[i][b]){
            a=dp[i][a];
            b=dp[i][b];
        }
    }
    return dp[0][a];
}
int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    cin>>n>>m>>q;
    for(int i=1;i<n;i++){
        int a,b;
        cin>>a>>b;
        e[a].push_back(b);
        e[b].push_back(a);
    }
    for(int i=1;i<=m;i++){
        cin>>v[i];
    }
    for(int i=0;i<q;i++){
        int a,b;
        cin>>a>>b;
        qu.push_back({{a,b},i});
    }
    dfs(1,1);
    for(int i=1;i<=19;i++){
        for(int j=1;j<=n;j++){
            dp[i][j]=dp[i-1][dp[i-1][j]];
        }
    }
    sort(qu.begin(),qu.end());
    int now=q-1;
    for(int i=m-1;i>0;i--){
        
        int p=lca(v[i],v[i+1]);
        
        int nw=v[i];
        while(nw!=p){
            if(c[nw]>0)modify(-1,c[nw]);
            c[nw]=i;
            modify(1,i);
            nw=dp[0][nw];
        }
        nw=v[i+1];
        while(nw!=p){
            if(c[nw]>0)modify(-1,c[nw]);
            c[nw]=i;
            modify(1,i);
            nw=dp[0][nw];
        }
        if(c[p]>0)modify(-1,c[p]);
        c[p]=i;
        modify(1,i);
        while(now>=0&&qu[now].F.F==i){
            if(qu[now].F.F==qu[now].F.S){
                qu[now].F.S=1;
            }else{
                qu[now].F.S=que(qu[now].F.S-1);
            }
            now--;
        }
    }

    sort(qu.begin(),qu.end(),cmp);
    for(auto x:qu){
        cout<<x.F.S<<"\n"; 
    }
    return 0;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 10844 KB Output is correct
2 Correct 2 ms 10844 KB Output is correct
3 Correct 1 ms 10844 KB Output is correct
4 Correct 2 ms 10844 KB Output is correct
5 Correct 2 ms 10844 KB Output is correct
6 Correct 2 ms 10844 KB Output is correct
7 Correct 2 ms 10844 KB Output is correct
8 Correct 2 ms 10844 KB Output is correct
9 Correct 2 ms 10844 KB Output is correct
10 Correct 2 ms 10844 KB Output is correct
11 Correct 2 ms 10844 KB Output is correct
12 Correct 2 ms 10844 KB Output is correct
13 Correct 2 ms 10844 KB Output is correct
14 Correct 2 ms 10844 KB Output is correct
15 Correct 2 ms 10844 KB Output is correct
16 Correct 2 ms 10844 KB Output is correct
17 Correct 2 ms 10844 KB Output is correct
18 Correct 2 ms 10844 KB Output is correct
19 Correct 2 ms 10844 KB Output is correct
20 Correct 2 ms 10844 KB Output is correct
21 Correct 2 ms 10844 KB Output is correct
22 Correct 2 ms 10844 KB Output is correct
23 Correct 2 ms 10844 KB Output is correct
24 Correct 2 ms 10844 KB Output is correct
25 Correct 2 ms 10844 KB Output is correct
26 Correct 2 ms 10844 KB Output is correct
27 Correct 2 ms 11096 KB Output is correct
28 Correct 2 ms 10892 KB Output is correct
29 Incorrect 2 ms 10844 KB Output isn't correct
30 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 10844 KB Output is correct
2 Correct 2 ms 10844 KB Output is correct
3 Correct 1 ms 10844 KB Output is correct
4 Correct 2 ms 10844 KB Output is correct
5 Correct 2 ms 10844 KB Output is correct
6 Correct 2 ms 10844 KB Output is correct
7 Correct 2 ms 10844 KB Output is correct
8 Correct 2 ms 10844 KB Output is correct
9 Correct 2 ms 10844 KB Output is correct
10 Correct 2 ms 10844 KB Output is correct
11 Correct 2 ms 10844 KB Output is correct
12 Correct 2 ms 10844 KB Output is correct
13 Correct 2 ms 10844 KB Output is correct
14 Correct 2 ms 10844 KB Output is correct
15 Correct 2 ms 10844 KB Output is correct
16 Correct 2 ms 10844 KB Output is correct
17 Correct 2 ms 10844 KB Output is correct
18 Correct 2 ms 10844 KB Output is correct
19 Correct 2 ms 10844 KB Output is correct
20 Correct 2 ms 10844 KB Output is correct
21 Correct 2 ms 10844 KB Output is correct
22 Correct 2 ms 10844 KB Output is correct
23 Correct 2 ms 10844 KB Output is correct
24 Correct 2 ms 10844 KB Output is correct
25 Correct 2 ms 10844 KB Output is correct
26 Correct 2 ms 10844 KB Output is correct
27 Correct 2 ms 11096 KB Output is correct
28 Correct 2 ms 10892 KB Output is correct
29 Incorrect 2 ms 10844 KB Output isn't correct
30 Halted 0 ms 0 KB -

Subtask #3
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 10844 KB Output is correct
2 Correct 2 ms 10844 KB Output is correct
3 Correct 2 ms 10844 KB Output is correct
4 Execution timed out 5082 ms 19056 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10840 KB Output is correct
2 Correct 50 ms 14128 KB Output is correct
3 Correct 75 ms 14976 KB Output is correct
4 Correct 64 ms 16988 KB Output is correct
5 Correct 108 ms 19024 KB Output is correct
6 Correct 97 ms 19040 KB Output is correct
7 Correct 95 ms 19048 KB Output is correct
8 Correct 99 ms 19284 KB Output is correct
9 Correct 98 ms 19024 KB Output is correct
10 Correct 98 ms 19012 KB Output is correct
11 Correct 95 ms 19024 KB Output is correct
12 Correct 107 ms 19284 KB Output is correct
13 Correct 98 ms 19472 KB Output is correct
14 Correct 104 ms 19852 KB Output is correct
15 Incorrect 120 ms 21956 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #5
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 10844 KB Output is correct
2 Correct 2 ms 10844 KB Output is correct
3 Correct 2 ms 10844 KB Output is correct
4 Correct 112 ms 17412 KB Output is correct
5 Correct 113 ms 17440 KB Output is correct
6 Correct 131 ms 21184 KB Output is correct
7 Correct 143 ms 21964 KB Output is correct
8 Correct 136 ms 21964 KB Output is correct
9 Correct 136 ms 21812 KB Output is correct
10 Correct 143 ms 21960 KB Output is correct
11 Correct 141 ms 22004 KB Output is correct
12 Correct 152 ms 21964 KB Output is correct
13 Correct 135 ms 22028 KB Output is correct
14 Correct 46 ms 14452 KB Output is correct

Subtask #6
0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 10844 KB Output is correct
2 Correct 2 ms 10844 KB Output is correct
3 Correct 1 ms 10844 KB Output is correct
4 Correct 2 ms 10844 KB Output is correct
5 Correct 2 ms 10844 KB Output is correct
6 Correct 2 ms 10844 KB Output is correct
7 Correct 2 ms 10844 KB Output is correct
8 Correct 2 ms 10844 KB Output is correct
9 Correct 2 ms 10844 KB Output is correct
10 Correct 2 ms 10844 KB Output is correct
11 Correct 2 ms 10844 KB Output is correct
12 Correct 2 ms 10844 KB Output is correct
13 Correct 2 ms 10844 KB Output is correct
14 Correct 2 ms 10844 KB Output is correct
15 Correct 2 ms 10844 KB Output is correct
16 Correct 2 ms 10844 KB Output is correct
17 Correct 2 ms 10844 KB Output is correct
18 Correct 2 ms 10844 KB Output is correct
19 Correct 2 ms 10844 KB Output is correct
20 Correct 2 ms 10844 KB Output is correct
21 Correct 2 ms 10844 KB Output is correct
22 Correct 2 ms 10844 KB Output is correct
23 Correct 2 ms 10844 KB Output is correct
24 Correct 2 ms 10844 KB Output is correct
25 Correct 2 ms 10844 KB Output is correct
26 Correct 2 ms 10844 KB Output is correct
27 Correct 2 ms 11096 KB Output is correct
28 Correct 2 ms 10892 KB Output is correct
29 Incorrect 2 ms 10844 KB Output isn't correct
30 Halted 0 ms 0 KB -