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답안 #1005143

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1005143 2024-06-22T07:56:15 Z modwwe Tourism (JOI23_tourism) C++17
28 / 100
 5000 ms 28840 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[100007];
int nxt[100007];
bool cmp(ic a,ic b)
{
    if(a.a / S != b.a / S) return (a.a < b.a);
	else if(!((a.a / S) & 1)) return (a.b < b.b);
	else return (a.b > b.b);
}
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-1);
    /// 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--;
    }

}
int cinn()
{
    char c;
    while (c = getchar(), c < '0' || c > '9');
    int x = c - '0';
    while (c = getchar(), c >= '0' && c <= '9')
        x = x * 10 + c - '0';
    return x;
}

void phongbeo()
{
    n=cinn();
     m=cinn();
     k=cinn();
    S=sqrt(m);
    for(int i=1; i<n; i++)
        l=cinn(),r=cinn(),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++)
        b[i]=cinn();
    for(int i=1; i<=k; i++)
        a[i].a=cinn(),a[i].b=cinn(),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:87:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   87 |     int mid=l+r>>1;
      |             ~^~
tourism.cpp: In function 'int get1(int, int, int, int, int)':
tourism.cpp:99:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   99 |     int mid=l+r>>1;
      |             ~^~
tourism.cpp: In function 'void build2(int, int, int)':
tourism.cpp:153:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  153 |     int mid=l+r>>1;
      |             ~^~
tourism.cpp: In function 'int get_lca(int, int, int, int, int)':
tourism.cpp:162:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  162 |     int mid=l+r>>1;
      |             ~^~

Subtask #1
5.0 / 5.0

# 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 1 ms 16732 KB Output is correct
4 Correct 2 ms 16732 KB Output is correct
5 Correct 2 ms 16732 KB Output is correct
6 Correct 2 ms 16732 KB Output is correct
7 Correct 2 ms 16732 KB Output is correct
8 Correct 2 ms 16732 KB Output is correct
9 Correct 2 ms 16732 KB Output is correct
10 Correct 2 ms 16732 KB Output is correct
11 Correct 3 ms 16732 KB Output is correct
12 Correct 3 ms 16732 KB Output is correct
13 Correct 3 ms 16728 KB Output is correct
14 Correct 2 ms 16732 KB Output is correct
15 Correct 2 ms 16732 KB Output is correct
16 Correct 2 ms 16728 KB Output is correct
17 Correct 2 ms 16732 KB Output is correct
18 Correct 2 ms 16732 KB Output is correct
19 Correct 2 ms 16732 KB Output is correct
20 Correct 2 ms 16908 KB Output is correct
21 Correct 2 ms 16728 KB Output is correct
22 Correct 2 ms 16732 KB Output is correct
23 Correct 2 ms 16732 KB Output is correct
24 Correct 2 ms 16732 KB Output is correct
25 Correct 3 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 16732 KB Output is correct
2 Correct 2 ms 16732 KB Output is correct
3 Correct 1 ms 16732 KB Output is correct
4 Correct 2 ms 16732 KB Output is correct
5 Correct 2 ms 16732 KB Output is correct
6 Correct 2 ms 16732 KB Output is correct
7 Correct 2 ms 16732 KB Output is correct
8 Correct 2 ms 16732 KB Output is correct
9 Correct 2 ms 16732 KB Output is correct
10 Correct 2 ms 16732 KB Output is correct
11 Correct 3 ms 16732 KB Output is correct
12 Correct 3 ms 16732 KB Output is correct
13 Correct 3 ms 16728 KB Output is correct
14 Correct 2 ms 16732 KB Output is correct
15 Correct 2 ms 16732 KB Output is correct
16 Correct 2 ms 16728 KB Output is correct
17 Correct 2 ms 16732 KB Output is correct
18 Correct 2 ms 16732 KB Output is correct
19 Correct 2 ms 16732 KB Output is correct
20 Correct 2 ms 16908 KB Output is correct
21 Correct 2 ms 16728 KB Output is correct
22 Correct 2 ms 16732 KB Output is correct
23 Correct 2 ms 16732 KB Output is correct
24 Correct 2 ms 16732 KB Output is correct
25 Correct 3 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 10 ms 16988 KB Output is correct
31 Correct 14 ms 16732 KB Output is correct
32 Correct 19 ms 16988 KB Output is correct
33 Correct 16 ms 16988 KB Output is correct
34 Correct 17 ms 16988 KB Output is correct
35 Correct 6 ms 16988 KB Output is correct
36 Correct 5 ms 16988 KB Output is correct
37 Correct 5 ms 16988 KB Output is correct
38 Correct 12 ms 17080 KB Output is correct
39 Correct 12 ms 16984 KB Output is correct
40 Correct 13 ms 16988 KB Output is correct
41 Correct 6 ms 16988 KB Output is correct
42 Correct 5 ms 16988 KB Output is correct
43 Correct 5 ms 17028 KB Output is correct
44 Correct 15 ms 16984 KB Output is correct
45 Correct 15 ms 17028 KB Output is correct
46 Correct 13 ms 16988 KB Output is correct
47 Correct 5 ms 17036 KB Output is correct
48 Correct 5 ms 16988 KB Output is correct
49 Correct 5 ms 16988 KB Output is correct
50 Correct 17 ms 16988 KB Output is correct
51 Correct 17 ms 16988 KB Output is correct
52 Correct 17 ms 17012 KB Output is correct
53 Correct 17 ms 16988 KB Output is correct
54 Correct 17 ms 17008 KB Output is correct
55 Correct 18 ms 17240 KB Output is correct
56 Correct 3 ms 16732 KB Output is correct
57 Correct 2 ms 16732 KB Output is correct
58 Correct 4 ms 16984 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 16888 KB Output is correct
4 Correct 3949 ms 23896 KB Output is correct
5 Correct 2425 ms 27244 KB Output is correct
6 Correct 3580 ms 28244 KB Output is correct
7 Execution timed out 5067 ms 28840 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #4
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 16732 KB Output is correct
2 Correct 104 ms 20060 KB Output is correct
3 Correct 153 ms 20060 KB Output is correct
4 Correct 124 ms 21328 KB Output is correct
5 Correct 65 ms 22716 KB Output is correct
6 Correct 83 ms 22712 KB Output is correct
7 Correct 106 ms 22712 KB Output is correct
8 Correct 124 ms 22612 KB Output is correct
9 Correct 118 ms 22608 KB Output is correct
10 Correct 127 ms 22616 KB Output is correct
11 Correct 192 ms 22608 KB Output is correct
12 Correct 189 ms 22612 KB Output is correct
13 Correct 209 ms 22608 KB Output is correct
14 Correct 204 ms 22560 KB Output is correct
15 Correct 198 ms 22868 KB Output is correct
16 Correct 151 ms 22612 KB Output is correct
17 Correct 156 ms 22616 KB Output is correct
18 Correct 158 ms 22716 KB Output is correct
19 Correct 66 ms 22616 KB Output is correct
20 Correct 74 ms 22716 KB Output is correct
21 Correct 78 ms 22704 KB Output is correct
22 Correct 78 ms 22728 KB Output is correct
23 Correct 81 ms 22716 KB Output is correct
24 Correct 88 ms 22608 KB Output is correct
25 Correct 103 ms 22696 KB Output is correct
26 Correct 114 ms 22744 KB Output is correct
27 Correct 162 ms 22612 KB Output is correct
28 Correct 212 ms 22688 KB Output is correct
29 Correct 240 ms 22612 KB Output is correct
30 Correct 253 ms 22748 KB Output is correct
31 Correct 230 ms 22612 KB Output is correct
32 Correct 234 ms 22776 KB Output is correct
33 Correct 230 ms 22868 KB Output is correct
34 Correct 220 ms 23020 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 16732 KB Output is correct
3 Correct 3 ms 16732 KB Output is correct
4 Execution timed out 5064 ms 20052 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 16732 KB Output is correct
2 Correct 2 ms 16732 KB Output is correct
3 Correct 1 ms 16732 KB Output is correct
4 Correct 2 ms 16732 KB Output is correct
5 Correct 2 ms 16732 KB Output is correct
6 Correct 2 ms 16732 KB Output is correct
7 Correct 2 ms 16732 KB Output is correct
8 Correct 2 ms 16732 KB Output is correct
9 Correct 2 ms 16732 KB Output is correct
10 Correct 2 ms 16732 KB Output is correct
11 Correct 3 ms 16732 KB Output is correct
12 Correct 3 ms 16732 KB Output is correct
13 Correct 3 ms 16728 KB Output is correct
14 Correct 2 ms 16732 KB Output is correct
15 Correct 2 ms 16732 KB Output is correct
16 Correct 2 ms 16728 KB Output is correct
17 Correct 2 ms 16732 KB Output is correct
18 Correct 2 ms 16732 KB Output is correct
19 Correct 2 ms 16732 KB Output is correct
20 Correct 2 ms 16908 KB Output is correct
21 Correct 2 ms 16728 KB Output is correct
22 Correct 2 ms 16732 KB Output is correct
23 Correct 2 ms 16732 KB Output is correct
24 Correct 2 ms 16732 KB Output is correct
25 Correct 3 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 10 ms 16988 KB Output is correct
31 Correct 14 ms 16732 KB Output is correct
32 Correct 19 ms 16988 KB Output is correct
33 Correct 16 ms 16988 KB Output is correct
34 Correct 17 ms 16988 KB Output is correct
35 Correct 6 ms 16988 KB Output is correct
36 Correct 5 ms 16988 KB Output is correct
37 Correct 5 ms 16988 KB Output is correct
38 Correct 12 ms 17080 KB Output is correct
39 Correct 12 ms 16984 KB Output is correct
40 Correct 13 ms 16988 KB Output is correct
41 Correct 6 ms 16988 KB Output is correct
42 Correct 5 ms 16988 KB Output is correct
43 Correct 5 ms 17028 KB Output is correct
44 Correct 15 ms 16984 KB Output is correct
45 Correct 15 ms 17028 KB Output is correct
46 Correct 13 ms 16988 KB Output is correct
47 Correct 5 ms 17036 KB Output is correct
48 Correct 5 ms 16988 KB Output is correct
49 Correct 5 ms 16988 KB Output is correct
50 Correct 17 ms 16988 KB Output is correct
51 Correct 17 ms 16988 KB Output is correct
52 Correct 17 ms 17012 KB Output is correct
53 Correct 17 ms 16988 KB Output is correct
54 Correct 17 ms 17008 KB Output is correct
55 Correct 18 ms 17240 KB Output is correct
56 Correct 3 ms 16732 KB Output is correct
57 Correct 2 ms 16732 KB Output is correct
58 Correct 4 ms 16984 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 16888 KB Output is correct
62 Correct 3949 ms 23896 KB Output is correct
63 Correct 2425 ms 27244 KB Output is correct
64 Correct 3580 ms 28244 KB Output is correct
65 Execution timed out 5067 ms 28840 KB Time limit exceeded
66 Halted 0 ms 0 KB -