oj.uz

답안 #567039

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
567039 2022-05-23T07:32:29 Z zaneyu Jail (JOI22_jail) C++14
0 / 100
 5000 ms 575860 KB 
/*input
1
8
1 2
2 3
3 4
4 5
5 6
6 7
7 8
2
3 4
4 8
*/
#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(ll 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];
int vis[maxn];
int par[maxn];
int dep[maxn];
void dfs(int u,int p){
    par[u]=p;
    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;
}
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);
    }
    dfs(0,-1);
    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});
    }
    REP(i,sz(asd)){
        int a=asd[i].f,b=asd[i].s;
        int cur=i+1;
        if(in[b]) vv[in[b]].pb(cur);
        if(out[a]) vv[cur].pb(out[a]);
        vector<int> pth;
        while(a!=b){
            if(dep[a]>dep[b]){
                a=par[a];
                pth.pb(a);
            }
            else{
                b=par[b];
                pth.pb(b);               
            }
        }
        SORT_UNIQUE(pth);
        for(int x:pth){
            if(x==a or x==b) continue;
            if(in[x]) vv[in[x]].pb(cur);
            if(out[x]) vv[cur].pb(out[x]);
        } 
    }
    wk=1;
    REP1(i,m){
        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,m) vv[i].clear(),vis[i]=0;
}
int main(){
    int t;
    cin>>t;
    while(t--) solve();
}

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 27 ms 9684 KB Output is correct
5 Correct 54 ms 9684 KB Output is correct
6 Correct 8 ms 9724 KB Output is correct
7 Correct 8 ms 9660 KB Output is correct
8 Correct 10 ms 9812 KB Output is correct
9 Correct 282 ms 12188 KB Output is correct
10 Correct 1399 ms 20552 KB Output is correct
11 Correct 18 ms 9684 KB Output is correct
12 Correct 92 ms 9736 KB Output is correct
13 Correct 257 ms 49356 KB Output is correct
14 Correct 325 ms 63756 KB Output is correct
15 Execution timed out 5086 ms 575860 KB Time limit exceeded
16 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 7 ms 9692 KB Output is correct
3 Correct 9 ms 9684 KB Output is correct
4 Incorrect 9 ms 9684 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 7 ms 9692 KB Output is correct
3 Correct 9 ms 9684 KB Output is correct
4 Incorrect 9 ms 9684 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 7 ms 9692 KB Output is correct
3 Correct 9 ms 9684 KB Output is correct
4 Incorrect 9 ms 9684 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 7 ms 9692 KB Output is correct
3 Correct 9 ms 9684 KB Output is correct
4 Incorrect 9 ms 9684 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 5 ms 9612 KB Output is correct
4 Correct 5 ms 9684 KB Output is correct
5 Correct 18 ms 9740 KB Output is correct
6 Incorrect 7 ms 9684 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 27 ms 9684 KB Output is correct
5 Correct 54 ms 9684 KB Output is correct
6 Correct 8 ms 9724 KB Output is correct
7 Correct 8 ms 9660 KB Output is correct
8 Correct 10 ms 9812 KB Output is correct
9 Correct 282 ms 12188 KB Output is correct
10 Correct 1399 ms 20552 KB Output is correct
11 Correct 18 ms 9684 KB Output is correct
12 Correct 92 ms 9736 KB Output is correct
13 Correct 257 ms 49356 KB Output is correct
14 Correct 325 ms 63756 KB Output is correct
15 Execution timed out 5086 ms 575860 KB Time limit exceeded
16 Halted 0 ms 0 KB -