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답안 #1005092

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1005092 2024-06-22T07:08:44 Z modwwe Tourism (JOI23_tourism) C++17
28 / 100
 5000 ms 24148 KB 
///https://www.instagram.com/_modwwe/
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2")
#include<bits/stdc++.h>
//#define int long long
//#define ll long long
#define down cout<<'\n';
#define NHP     ios_base::sync_with_stdio(0);cout.tie(0);cin.tie(0);
#define modwwe  int t;cin>>t; while(t--)
#define bit(i,j) (i>>j&1)
#define sobit(a) __builtin_popcountll(a)
#define task "test"
#define fin(x) freopen(x".inp","r",stdin)
#define fou(x) freopen(x".out","w",stdout)
#define pb push_back
#define checktime   cerr << (double)clock() / CLOCKS_PER_SEC * 1000  << " ms";
using namespace std;
void phongbeo();
const int mod2=1e9+7;
const int  mod1=998244353;
struct icd
{
    int a,b;
};
struct ib
{
    int a;
    int b;
};
struct ic
{
    int a,b,c;
};
struct id
{
    int a,c;
};
struct ie
{
    int a,b,c, d,e,f;

};
int n,m,s1,s2,s4,s3,sf,k,r,mid,s5,s6,mx,s7,s8,s9,mx2,res,dem2=0,dem=0,l;
int  i,s10,s12;
int el=29;
main()
{
#ifndef ONLINE_JUDGE
  //  fin(task),fou(task);
#endif
    NHP
    /// cin>>s1;
    // modwwe
    phongbeo();
}
id t[400007];
int depth[100007];
ic a[100007];
int c[100007];
ib euler[100007];
int d[100007];
int st[17][100007];
int ans[1000007];
int S;
int b[100007];
vector<int> v[100007];
int e[100007];
int lz[400007];
int pre[400007];
int nxt[100007];
bool cmp(ic a,ic b)
{
    if(a.a/S==b.a/S) return a.b<b.b;
    return        a.a/S<b.a/S;
}
void upd(int node,int l,int r,int l1,int r1,int cc)
{
    if(l>=l1&&r<=r1)
    {
        t[node].c+=cc;
        s10=t[node].c;
        if(t[node].c>0) t[node]= {l,t[node].c};
        else t[node]= {0,0};
        return;
    }
    int mid=l+r>>1;
    if(mid>=r1)
    upd(node<<1,l,mid,l1,r1,cc);
    else
    upd(node<<1|1,mid+1,r,l1,r1,cc);
    t[node].a=max(t[node<<1].a,t[node<<1|1].a);
}
int get1(int node,int l,int r,int l1,int r1)
{
    if(l>r1||r<l1) return 0;
    if(l>=l1&&r<=r1) return t[node].a;

    int mid=l+r>>1;
    return max(get1(node<<1,l,mid,l1,r1),get1(node<<1|1,mid+1,r,l1,r1));
}
void dfs(int x,int y)
{
    st[0][x]=y;
    depth[x]=depth[y]+1;
    euler[x].a=++dem;
    c[dem]=x;
    for(auto f:v[x])
        if(f!=y)
            dfs(f,x);
    euler[x].b=dem;
}
int lca(int x,int y,int cc)
{
    if(x==0||x==n+1||y==0||y==n+1) return 1;
    if(depth[x]<depth[y]) swap(x,y),cc=0;
    int ss=depth[x]-depth[y]-1;
    if(ss>=0)
        for(int j=0; j<17; j++)
            if(bit(ss,j))
                x=st[j][x];
    if(st[0][x]==y) return x;
    if(ss!=-1)  x=st[0][x];
    for(int j=16; j>=0; --j)
        if(st[j][x]!=st[j][y])
            x=st[j][x],y=st[j][y];
    if(cc==0) return y;
    else
        return x;
}
int lca2(int x,int y)
{
    if(x==0 )return y;
    if(y==0 )return x;
    if(depth[x]<depth[y]) swap(x,y);
    int ss=depth[x]-depth[y];
    for(int j=0; j<17; j++)
        if(bit(ss,j))
            x=st[j][x];
    if(x==y) return x;
    for(int j=16; j>=0; --j)
        if(st[j][x]!=st[j][y])
            x=st[j][x],y=st[j][y];
    return st[0][x];
}
void build2(int node,int l,int r)
{
    if(l==r)
    {
        lz[node]=b[l];
        return;
    }
    int mid=l+r>>1;
    build2(node<<1,l,mid);
    build2(node<<1|1,mid+1,r);
    lz[node]=lca2(lz[node<<1],lz[node<<1|1]);
}
int get_lca(int node,int l,int r,int l1,int r1)
{
    if(l>r1||r<l1) return 0;
    if(l>=l1&&r<=r1) return lz[node];
    int mid=l+r>>1;
    return lca2(get_lca(node<<1,l,mid,l1,r1),get_lca(node<<1|1,mid+1,r,l1,r1));
}
void add(int x)
{
    s2=get1(1,1,n,1,euler[x].a);
    /// s3=get2(1,1,n,euler[x].a,n);
    upd(1,1,n,euler[x].a,euler[x].a,1);
    if(d[x]!=0||s10>1) return;
    s2=c[s2];
    s3=nxt[s2];
    pre[x]=s2;
    nxt[x]=s3;
    nxt[s2]=x;
    pre[s3]=x;
//if(l==3&&x==1) cout<<s2<<" "<<s3<<" "<<x,down
    s2=lca(x,s2,1);
    s3=lca(x,s3,1);
    if(depth[s2]<depth[s3]) swap(s2,s3);
    if(depth[x]>=depth[s2])
    {
        s4+=depth[x]-depth[s2]+1;
        d[x]=s2;
        e[s2]=x;
    }
}
void del(int x)
{
    upd(1,1,n,euler[x].a,euler[x].a,-1);
    s5=d[x];
    //s2=get1(1,1,n,euler[s5].a,euler[x].a);
    //s3=get2(1,1,n,euler[x].a,euler[s5].b);
    if(s10>=1) return;
    s2=pre[x];
    s3=nxt[x];
    nxt[s2]=s3;
    if(s3!=0) pre[s3]=s2;
    pre[x]=0;
    nxt[x]=0;
    s9=s2;
    if(d[x]==0)return;
    d[x]=0;
    e[s5]=0;
    s4-=(depth[x]-depth[s5]+1);
    s2=lca(s2,x,1);
    s3=lca(s3,x,1);
    if(max(depth[s2],depth[s3])<=depth[s5]) return;
    if(st[0][s2]==s9&&depth[s2]>=depth[s3]&&d[s2]==0)
    {
        s2=s9;
        s4+=depth[s2]-depth[s5]+1;
        d[s2]=s5;
        e[s5]=s2;
        return;
    }
    if(depth[s2]<depth[s3])swap(s2,s3);
    if(depth[s5]<depth[s2])
    {
        s3=e[s2];
        e[s2]=0;
        e[s5]=s3;
        d[s3]=s5;
        s4+=(depth[s2]-depth[s5]);
    }
}
void go(int x,int y)
{
    while(r<y)
    {
        r++;
        add(b[r]);

    }
    while(l>x)
    {
        l--;

        add(b[l]);
        //cout<<l<<" "<<s4,down

    }
    //cout<<s4<<" "<<x<<" "<<y,down
    while(l<x)
    {
        del(b[l]);
        l++;
    }
    while(r>y)
    {
        del(b[r]);

        r--;
    }

}
void phongbeo()
{
    cin>>n>>m>>k;
    S=sqrt(m);
    for(int i=1; i<n; i++)
        cin>>l>>r,v[l].pb(r),v[r].pb(l);
    dfs(1,0);
    for(int i=1; i<17; i++)
        for(int j=1; j<=n; j++)
            st[i][j]=st[i-1][st[i-1][j]];
    for(int i=1; i<=m; i++)
        cin>>b[i];
    for(int i=1; i<=k; i++)
        cin>>a[i].a>>a[i].b,a[i].c=i;
    sort(a+1,a+1+k,cmp);
    l=1;
    r=0;
    build2(1,1,m);
    for(int i=1; i<=k; i++)
    {
        go(a[i].a,a[i].b);
        s3=get_lca(1,1,m,a[i].a,a[i].b);
        ans[a[i].c]=s4+depth[1]-depth[s3];
    }
    for(int i=1; i<=k; i++)
        cout<<ans[i],down
    }
/*
8 8 2
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 6 4 3 5 2 4 7
2 8
1 2

*/

Compilation message

tourism.cpp:46:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   46 | main()
      | ^~~~
tourism.cpp: In function 'void upd(int, int, int, int, int, int)':
tourism.cpp:86:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   86 |     int mid=l+r>>1;
      |             ~^~
tourism.cpp: In function 'int get1(int, int, int, int, int)':
tourism.cpp:98:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   98 |     int mid=l+r>>1;
      |             ~^~
tourism.cpp: In function 'void build2(int, int, int)':
tourism.cpp:152:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  152 |     int mid=l+r>>1;
      |             ~^~
tourism.cpp: In function 'int get_lca(int, int, int, int, int)':
tourism.cpp:161:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  161 |     int mid=l+r>>1;
      |             ~^~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 16728 KB Output is correct
2 Correct 2 ms 16732 KB Output is correct
3 Correct 2 ms 16732 KB Output is correct
4 Correct 3 ms 16732 KB Output is correct
5 Correct 2 ms 16732 KB Output is correct
6 Correct 3 ms 16732 KB Output is correct
7 Correct 2 ms 16732 KB Output is correct
8 Correct 3 ms 16732 KB Output is correct
9 Correct 5 ms 16732 KB Output is correct
10 Correct 4 ms 16732 KB Output is correct
11 Correct 3 ms 16732 KB Output is correct
12 Correct 4 ms 16732 KB Output is correct
13 Correct 2 ms 16728 KB Output is correct
14 Correct 3 ms 16820 KB Output is correct
15 Correct 4 ms 16732 KB Output is correct
16 Correct 3 ms 16732 KB Output is correct
17 Correct 3 ms 16732 KB Output is correct
18 Correct 3 ms 16732 KB Output is correct
19 Correct 3 ms 16732 KB Output is correct
20 Correct 3 ms 16732 KB Output is correct
21 Correct 3 ms 16732 KB Output is correct
22 Correct 3 ms 16920 KB Output is correct
23 Correct 3 ms 16732 KB Output is correct
24 Correct 3 ms 16732 KB Output is correct
25 Correct 4 ms 16732 KB Output is correct
26 Correct 3 ms 16732 KB Output is correct
27 Correct 2 ms 16732 KB Output is correct
28 Correct 2 ms 16732 KB Output is correct
29 Correct 2 ms 16732 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 16728 KB Output is correct
2 Correct 2 ms 16732 KB Output is correct
3 Correct 2 ms 16732 KB Output is correct
4 Correct 3 ms 16732 KB Output is correct
5 Correct 2 ms 16732 KB Output is correct
6 Correct 3 ms 16732 KB Output is correct
7 Correct 2 ms 16732 KB Output is correct
8 Correct 3 ms 16732 KB Output is correct
9 Correct 5 ms 16732 KB Output is correct
10 Correct 4 ms 16732 KB Output is correct
11 Correct 3 ms 16732 KB Output is correct
12 Correct 4 ms 16732 KB Output is correct
13 Correct 2 ms 16728 KB Output is correct
14 Correct 3 ms 16820 KB Output is correct
15 Correct 4 ms 16732 KB Output is correct
16 Correct 3 ms 16732 KB Output is correct
17 Correct 3 ms 16732 KB Output is correct
18 Correct 3 ms 16732 KB Output is correct
19 Correct 3 ms 16732 KB Output is correct
20 Correct 3 ms 16732 KB Output is correct
21 Correct 3 ms 16732 KB Output is correct
22 Correct 3 ms 16920 KB Output is correct
23 Correct 3 ms 16732 KB Output is correct
24 Correct 3 ms 16732 KB Output is correct
25 Correct 4 ms 16732 KB Output is correct
26 Correct 3 ms 16732 KB Output is correct
27 Correct 2 ms 16732 KB Output is correct
28 Correct 2 ms 16732 KB Output is correct
29 Correct 2 ms 16732 KB Output is correct
30 Correct 14 ms 16988 KB Output is correct
31 Correct 16 ms 16988 KB Output is correct
32 Correct 34 ms 16988 KB Output is correct
33 Correct 22 ms 16988 KB Output is correct
34 Correct 22 ms 16988 KB Output is correct
35 Correct 6 ms 16988 KB Output is correct
36 Correct 6 ms 17028 KB Output is correct
37 Correct 6 ms 16988 KB Output is correct
38 Correct 17 ms 16984 KB Output is correct
39 Correct 21 ms 16988 KB Output is correct
40 Correct 25 ms 17008 KB Output is correct
41 Correct 6 ms 16984 KB Output is correct
42 Correct 5 ms 16988 KB Output is correct
43 Correct 6 ms 16988 KB Output is correct
44 Correct 18 ms 17056 KB Output is correct
45 Correct 18 ms 16988 KB Output is correct
46 Correct 18 ms 17052 KB Output is correct
47 Correct 5 ms 16988 KB Output is correct
48 Correct 5 ms 16960 KB Output is correct
49 Correct 5 ms 16988 KB Output is correct
50 Correct 19 ms 17040 KB Output is correct
51 Correct 18 ms 16988 KB Output is correct
52 Correct 18 ms 17036 KB Output is correct
53 Correct 18 ms 17032 KB Output is correct
54 Correct 18 ms 16988 KB Output is correct
55 Correct 18 ms 16984 KB Output is correct
56 Correct 4 ms 16728 KB Output is correct
57 Correct 3 ms 16984 KB Output is correct
58 Correct 5 ms 17032 KB Output is correct

Subtask #3
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 16732 KB Output is correct
2 Correct 2 ms 16732 KB Output is correct
3 Correct 3 ms 16732 KB Output is correct
4 Execution timed out 5096 ms 22700 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #4
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 16728 KB Output is correct
2 Correct 68 ms 20060 KB Output is correct
3 Correct 88 ms 20056 KB Output is correct
4 Correct 73 ms 21588 KB Output is correct
5 Correct 69 ms 22868 KB Output is correct
6 Correct 79 ms 22876 KB Output is correct
7 Correct 97 ms 22864 KB Output is correct
8 Correct 102 ms 22868 KB Output is correct
9 Correct 109 ms 22608 KB Output is correct
10 Correct 113 ms 22864 KB Output is correct
11 Correct 112 ms 22880 KB Output is correct
12 Correct 119 ms 22712 KB Output is correct
13 Correct 113 ms 22864 KB Output is correct
14 Correct 115 ms 23120 KB Output is correct
15 Correct 118 ms 24136 KB Output is correct
16 Correct 101 ms 22964 KB Output is correct
17 Correct 91 ms 22804 KB Output is correct
18 Correct 95 ms 22868 KB Output is correct
19 Correct 64 ms 22612 KB Output is correct
20 Correct 76 ms 22704 KB Output is correct
21 Correct 77 ms 22612 KB Output is correct
22 Correct 83 ms 22816 KB Output is correct
23 Correct 98 ms 22608 KB Output is correct
24 Correct 104 ms 22612 KB Output is correct
25 Correct 117 ms 22628 KB Output is correct
26 Correct 123 ms 22816 KB Output is correct
27 Correct 142 ms 22608 KB Output is correct
28 Correct 143 ms 22612 KB Output is correct
29 Correct 162 ms 22608 KB Output is correct
30 Correct 151 ms 22876 KB Output is correct
31 Correct 156 ms 22924 KB Output is correct
32 Correct 143 ms 23136 KB Output is correct
33 Correct 152 ms 23380 KB Output is correct
34 Correct 149 ms 24148 KB Output is correct

Subtask #5
0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 16732 KB Output is correct
2 Correct 2 ms 16728 KB Output is correct
3 Correct 3 ms 16732 KB Output is correct
4 Execution timed out 5068 ms 21076 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #6
0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 16728 KB Output is correct
2 Correct 2 ms 16732 KB Output is correct
3 Correct 2 ms 16732 KB Output is correct
4 Correct 3 ms 16732 KB Output is correct
5 Correct 2 ms 16732 KB Output is correct
6 Correct 3 ms 16732 KB Output is correct
7 Correct 2 ms 16732 KB Output is correct
8 Correct 3 ms 16732 KB Output is correct
9 Correct 5 ms 16732 KB Output is correct
10 Correct 4 ms 16732 KB Output is correct
11 Correct 3 ms 16732 KB Output is correct
12 Correct 4 ms 16732 KB Output is correct
13 Correct 2 ms 16728 KB Output is correct
14 Correct 3 ms 16820 KB Output is correct
15 Correct 4 ms 16732 KB Output is correct
16 Correct 3 ms 16732 KB Output is correct
17 Correct 3 ms 16732 KB Output is correct
18 Correct 3 ms 16732 KB Output is correct
19 Correct 3 ms 16732 KB Output is correct
20 Correct 3 ms 16732 KB Output is correct
21 Correct 3 ms 16732 KB Output is correct
22 Correct 3 ms 16920 KB Output is correct
23 Correct 3 ms 16732 KB Output is correct
24 Correct 3 ms 16732 KB Output is correct
25 Correct 4 ms 16732 KB Output is correct
26 Correct 3 ms 16732 KB Output is correct
27 Correct 2 ms 16732 KB Output is correct
28 Correct 2 ms 16732 KB Output is correct
29 Correct 2 ms 16732 KB Output is correct
30 Correct 14 ms 16988 KB Output is correct
31 Correct 16 ms 16988 KB Output is correct
32 Correct 34 ms 16988 KB Output is correct
33 Correct 22 ms 16988 KB Output is correct
34 Correct 22 ms 16988 KB Output is correct
35 Correct 6 ms 16988 KB Output is correct
36 Correct 6 ms 17028 KB Output is correct
37 Correct 6 ms 16988 KB Output is correct
38 Correct 17 ms 16984 KB Output is correct
39 Correct 21 ms 16988 KB Output is correct
40 Correct 25 ms 17008 KB Output is correct
41 Correct 6 ms 16984 KB Output is correct
42 Correct 5 ms 16988 KB Output is correct
43 Correct 6 ms 16988 KB Output is correct
44 Correct 18 ms 17056 KB Output is correct
45 Correct 18 ms 16988 KB Output is correct
46 Correct 18 ms 17052 KB Output is correct
47 Correct 5 ms 16988 KB Output is correct
48 Correct 5 ms 16960 KB Output is correct
49 Correct 5 ms 16988 KB Output is correct
50 Correct 19 ms 17040 KB Output is correct
51 Correct 18 ms 16988 KB Output is correct
52 Correct 18 ms 17036 KB Output is correct
53 Correct 18 ms 17032 KB Output is correct
54 Correct 18 ms 16988 KB Output is correct
55 Correct 18 ms 16984 KB Output is correct
56 Correct 4 ms 16728 KB Output is correct
57 Correct 3 ms 16984 KB Output is correct
58 Correct 5 ms 17032 KB Output is correct
59 Correct 2 ms 16732 KB Output is correct
60 Correct 2 ms 16732 KB Output is correct
61 Correct 3 ms 16732 KB Output is correct
62 Execution timed out 5096 ms 22700 KB Time limit exceeded
63 Halted 0 ms 0 KB -