oj.uz

답안 #567167

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
567167 2022-05-23T08:43:08 Z zaneyu Jail (JOI22_jail) C++14
5 / 100
 1993 ms 413180 KB 
/*input
1
5
1 2
1 3
1 4
4 5
2
1 2
2 3
*/
#include<bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
typedef tree<long long,null_type,less_equal<long long>,rb_tree_tag,tree_order_statistics_node_update> indexed_set;
#pragma GCC optimize("Ofast")
//#pragma GCC target("avx2")
//order_of_key #of elements less than x
// find_by_order kth element
using ll=long long;
using ld=long double;
using pii=pair<int,int>;
#define f first
#define s second
#define pb push_back
#define REP(i,n) for(int i=0;i<n;i++)
#define REP1(i,n) for(int i=1;i<=n;i++)
#define FILL(n,x) memset(n,x,sizeof(n))
#define ALL(_a) _a.begin(),_a.end()
#define sz(x) (int)x.size()
#define SORT_UNIQUE(c) (sort(c.begin(),c.end()),c.resize(distance(c.begin(),unique(c.begin(),c.end()))))
const ll maxn=2e5+5;
const ll maxlg=__lg(maxn)+2;
const ll INF64=4e18;
const int INF=0x3f3f3f3f;
const ll MOD=1e9+7;
const ld PI=acos(-1);
const ld eps=1e-6;
#define lowb(x) x&(-x)
#define MNTO(x,y) x=min(x,(__typeof__(x))y)
#define MXTO(x,y) x=max(x,(__typeof__(x))y)
template<typename T1,typename T2>
ostream& operator<<(ostream& out,pair<T1,T2> P){
    out<<P.f<<' '<<P.s;
    return out;
}
template<typename T>
ostream& operator<<(ostream& out,vector<T> V){
    REP(i,sz(V)) out<<V[i]<<((i!=sz(V)-1)?" ":"");
    return out;
}
ll mult(ll a,ll b){
    return a*b%MOD;
}
ll mypow(ll a,ll b){
    a%=MOD;
    if(a==0) return 0;
    if(b<=0) return 1;
    ll res=1LL;
    while(b){
        if(b&1) res=(res*a)%MOD;
        a=(a*a)%MOD;
        b>>=1;
    }
    return res;
}
bool wk=1;
vector<int> v[maxn];
int in[maxn],out[maxn];
vector<int> vv[maxn*40];
int vis[maxn*40];
int par[maxn][20];
int dep[maxn];
int cur;
int idx[maxn][20],idx2[maxn][20];

void dfs(int u,int p){
    par[u][0]=p;
    idx[u][0]=(cur++);
    idx2[u][0]=(cur++);
    if(in[u]) vv[in[u]].pb(idx[u][0]);
    if(out[u]) vv[idx2[u][0]].pb(out[u]);
    REP1(j,19){
        if(par[u][j-1]!=-1){
            par[u][j]=par[par[u][j-1]][j-1];
            idx[u][j]=(cur++);
            idx2[u][j]=(cur++);
            vv[idx2[u][j]].pb(idx2[u][j-1]);
            if(idx2[par[u][j-1]][j-1]) vv[idx2[u][j]].pb(idx2[par[u][j-1]][j-1]);
            vv[idx[u][j-1]].pb(idx[u][j]);
            if(idx[par[u][j-1]][j-1]) vv[idx[par[u][j-1]][j-1]].pb(idx[u][j]); 
        }
        else par[u][j]=-1;
    }
    for(int x:v[u]){
        if(x==p) continue;
        dep[x]=dep[u]+1;
        dfs(x,u);
    }
}

void dfs2(int u){
    vis[u]=1;
    for(int x:vv[u]){
        if(!vis[x]) dfs2(x);
        else if(vis[x]==1){
            wk=0;
            break;
        }
    }
    vis[u]=2;
}
int get(int a,int d){
    while(d){
        int z=__lg(lowb(d));
        a=par[a][z];
        if(a==-1) break;
        d-=lowb(d);
    }
    return a;
}
void solve(){
    int n,m;
    cin>>n;
    REP(i,n-1){
        int a,b;
        cin>>a>>b;
        --a,--b;
        v[a].pb(b),v[b].pb(a);
    }
    cin>>m;
    vector<pii> asd;
    REP1(i,m){
        int a,b;
        cin>>a>>b;
        --a,--b;
        in[a]=i,out[b]=i;
        asd.pb({a,b});
    }
    cur=m+1;
    dfs(0,-1);
    REP1(i,m){
        int a=asd[i-1].f,b=asd[i-1].s;
        int cur=i;
        if(in[b]) vv[in[b]].pb(i);
        if(out[a]) vv[i].pb(out[a]);
        if(dep[a]<dep[b]) swap(a,b);
        int d=dep[a]-dep[b];
        if(get(a,d)==b){
            --d;
            a=par[a][0];
        }
        else{
            a=par[a][0],b=par[b][0];
            if(get(a,d)==b){
                if(in[b]) vv[in[b]].pb(i);
                if(out[b]) vv[i].pb(out[b]);
            }
        }
        while(d){
            int z=__lg(lowb(d));
            vv[idx[a][z]].pb(cur);
            vv[cur].pb(idx2[a][z]);
            a=par[a][z];
            d-=lowb(d);
        }
        if(a==b) continue;
        for(int j=19;j>=0;j--){
            if(par[a][j]!=par[b][j]){
                vv[cur].pb(idx2[a][j]);
                vv[cur].pb(idx2[b][j]);
                vv[idx[a][j]].pb(cur);
                vv[idx[b][j]].pb(cur);
                a=par[a][j],b=par[b][j];
            }
        }
        int j=0;
        vv[cur].pb(idx2[a][j]);
        vv[cur].pb(idx2[b][j]);
        vv[idx[a][j]].pb(cur);
        vv[idx[b][j]].pb(cur);
        a=par[a][j],b=par[b][j];
        assert(a==b);
        if(in[a]) vv[in[a]].pb(i);
        if(out[a]) vv[i].pb(out[a]);
    }
    //REP1(i,cur-1) cout<<i<<' '<<vv[i]<<'\n';
    wk=1;
    REP1(i,cur-1){
        if(!vis[i]) dfs2(i);
    }
    if(wk){
        cout<<"Yes\n";
    }
    else cout<<"No\n";
    REP(i,n) v[i].clear(),in[i]=out[i]=0;
    REP1(i,cur) vv[i].clear(),vis[i]=0;
}
int main(){
    int t;
    cin>>t;
    while(t--) solve();
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 100 ms 192840 KB Output is correct
2 Correct 91 ms 192864 KB Output is correct
3 Correct 88 ms 192876 KB Output is correct
4 Correct 130 ms 192920 KB Output is correct
5 Correct 181 ms 192988 KB Output is correct
6 Correct 95 ms 193096 KB Output is correct
7 Correct 97 ms 193012 KB Output is correct
8 Correct 109 ms 193008 KB Output is correct
9 Correct 401 ms 200268 KB Output is correct
10 Correct 1158 ms 372968 KB Output is correct
11 Correct 105 ms 192844 KB Output is correct
12 Correct 215 ms 193060 KB Output is correct
13 Correct 1184 ms 377628 KB Output is correct
14 Correct 1116 ms 377764 KB Output is correct
15 Correct 1552 ms 388068 KB Output is correct
16 Correct 1993 ms 413180 KB Output is correct
17 Correct 1437 ms 381856 KB Output is correct
18 Correct 1273 ms 381696 KB Output is correct
19 Correct 1441 ms 381920 KB Output is correct
20 Correct 1403 ms 381868 KB Output is correct
21 Correct 1715 ms 383036 KB Output is correct
22 Correct 1102 ms 377208 KB Output is correct

Subtask #2
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 105 ms 192852 KB Output is correct
2 Correct 112 ms 192816 KB Output is correct
3 Correct 107 ms 193020 KB Output is correct
4 Correct 107 ms 193020 KB Output is correct
5 Correct 108 ms 193012 KB Output is correct
6 Correct 104 ms 193032 KB Output is correct
7 Correct 112 ms 193076 KB Output is correct
8 Incorrect 126 ms 193068 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 105 ms 192852 KB Output is correct
2 Correct 112 ms 192816 KB Output is correct
3 Correct 107 ms 193020 KB Output is correct
4 Correct 107 ms 193020 KB Output is correct
5 Correct 108 ms 193012 KB Output is correct
6 Correct 104 ms 193032 KB Output is correct
7 Correct 112 ms 193076 KB Output is correct
8 Incorrect 126 ms 193068 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #4
0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 105 ms 192852 KB Output is correct
2 Correct 112 ms 192816 KB Output is correct
3 Correct 107 ms 193020 KB Output is correct
4 Correct 107 ms 193020 KB Output is correct
5 Correct 108 ms 193012 KB Output is correct
6 Correct 104 ms 193032 KB Output is correct
7 Correct 112 ms 193076 KB Output is correct
8 Incorrect 126 ms 193068 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 105 ms 192852 KB Output is correct
2 Correct 112 ms 192816 KB Output is correct
3 Correct 107 ms 193020 KB Output is correct
4 Correct 107 ms 193020 KB Output is correct
5 Correct 108 ms 193012 KB Output is correct
6 Correct 104 ms 193032 KB Output is correct
7 Correct 112 ms 193076 KB Output is correct
8 Incorrect 126 ms 193068 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 99 ms 192892 KB Output is correct
2 Correct 115 ms 192856 KB Output is correct
3 Correct 98 ms 192832 KB Output is correct
4 Correct 116 ms 192876 KB Output is correct
5 Correct 121 ms 192816 KB Output is correct
6 Correct 94 ms 192912 KB Output is correct
7 Correct 95 ms 193008 KB Output is correct
8 Correct 102 ms 192892 KB Output is correct
9 Correct 104 ms 192816 KB Output is correct
10 Incorrect 91 ms 192844 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 100 ms 192840 KB Output is correct
2 Correct 91 ms 192864 KB Output is correct
3 Correct 88 ms 192876 KB Output is correct
4 Correct 130 ms 192920 KB Output is correct
5 Correct 181 ms 192988 KB Output is correct
6 Correct 95 ms 193096 KB Output is correct
7 Correct 97 ms 193012 KB Output is correct
8 Correct 109 ms 193008 KB Output is correct
9 Correct 401 ms 200268 KB Output is correct
10 Correct 1158 ms 372968 KB Output is correct
11 Correct 105 ms 192844 KB Output is correct
12 Correct 215 ms 193060 KB Output is correct
13 Correct 1184 ms 377628 KB Output is correct
14 Correct 1116 ms 377764 KB Output is correct
15 Correct 1552 ms 388068 KB Output is correct
16 Correct 1993 ms 413180 KB Output is correct
17 Correct 1437 ms 381856 KB Output is correct
18 Correct 1273 ms 381696 KB Output is correct
19 Correct 1441 ms 381920 KB Output is correct
20 Correct 1403 ms 381868 KB Output is correct
21 Correct 1715 ms 383036 KB Output is correct
22 Correct 1102 ms 377208 KB Output is correct
23 Correct 105 ms 192852 KB Output is correct
24 Correct 112 ms 192816 KB Output is correct
25 Correct 107 ms 193020 KB Output is correct
26 Correct 107 ms 193020 KB Output is correct
27 Correct 108 ms 193012 KB Output is correct
28 Correct 104 ms 193032 KB Output is correct
29 Correct 112 ms 193076 KB Output is correct
30 Incorrect 126 ms 193068 KB Output isn't correct
31 Halted 0 ms 0 KB -