oj.uz

Submission #709483

# Submission time Handle Problem Language Result Execution time Memory
709483 2023-03-13T16:58:29 Z urosk Jail (JOI22_jail) C++14
49 / 100
 426 ms 292672 KB 
#define here cerr<<"===========================================\n"
#define dbg(x) cerr<<#x<<": "<<x<<endl;
#include "bits/stdc++.h"
//#include <ext/pb_ds/tree_policy.hpp>
//#include <ext/pb_ds/assoc_container.hpp>
#define ld double
#define ll long long
#define llinf 100000000000000000LL // 10^17
#define pb push_back
#define popb pop_back
#define fi first
#define sc second
#define endl '\n'
#define pll pair<ll,ll>
#define pld pair<ld,ld>
#define all(a) a.begin(),a.end()
#define ceri(a,l,r) {cerr<<#a<<": ";for(ll i_ = l;i_<=r;i_++) cerr<<a[i_]<< " ";cerr<<endl;}
#define cer(a) {cerr<<#a<<": ";for(ll x_ : a) cerr<<x_<< " ";cerr<<endl;}

#define daj_mi_malo_vremena ios_base::sync_with_stdio(false);cerr.tie(0);cout.tie(0);cin.tie(0);

using namespace std;
//using namespace __gnu_pbds;
/*
ll add(ll x,ll y){
    x+=y;
    if(x<0){
        x%=mod;
        x+=mod;
    }else{
        if(x>=mod) x%=mod;
    }
    return x;
}
ll mul(ll a,ll b){
	ll ans = (a*b)%mod;
	if(ans<0) ans+=mod;
	return ans;
}
typedef tree<int,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
typedef tree<int,null_type,less_equal<ll>,rb_tree_tag,tree_order_statistics_node_update> ordered_multiset;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll rnd(ll l,ll r){
    return uniform_int_distribution<ll>(l,r)(rng);
}
*/
#define maxn 2000005
#define lg 22
ll n,m;
vector<ll> g[maxn];
vector<ll> v[maxn];
ll tsz = 0;
ll id[maxn][lg][2];
ll st[maxn][lg];
ll in[maxn],out[maxn],ti = 0;
bool intree(ll x,ll y){return in[y]<=in[x]&&out[x]<=out[y];}
ll lca(ll x,ll y){
    if(intree(x,y)) return y;
    if(intree(y,x)) return x;
    for(ll j = lg-1;j>=0;j--){
        if(!intree(x,st[y][j])) y = st[y][j];
    }
    return st[y][0];
}
void dfs(ll u,ll p){
    in[u] = ++ti;
    st[u][0] = p;
    for(ll s : g[u]) if(s!=p) dfs(s,u);
    out[u] = ti-1;
}
ll get(ll x,ll y){
    for(ll j = lg-1;j>=0;j--){
        if(!intree(y,st[x][j])) x = st[x][j];
    }
    return x;
}
void add(ll x,ll y,bool smer,ll nod){
    for(ll j = lg-1;j>=0;j--){
        if(!intree(y,st[x][j])){
            if(smer) v[id[x][j][1]].pb(nod);
            else v[nod].pb(id[x][j][0]);
            x = st[x][j];
        }
    }
    if(smer) v[id[x][0][1]].pb(nod);
    else v[nod].pb(id[x][0][0]);
    if(smer) v[id[y][0][1]].pb(nod);
    else v[nod].pb(id[y][0][0]);
}
ll deg[maxn];
void tc(){
    ti = 0;
    cin >> n;
    for(ll i = 1;i<=n-1;i++){
        ll x,y; cin >> x >> y;
        g[x].pb(y);
        g[y].pb(x);
    }
    dfs(1,1);
    for(ll i = 1;i<=n;i++) id[i][0][0] = i,id[i][0][1] = i+n;
    tsz = 2*n;
    for(ll j = 1;j<lg;j++) for(ll i = 1;i<=n;i++){
        st[i][j] = st[st[i][j-1]][j-1];
        ++tsz;
        id[i][j][0] = tsz;
        v[tsz].pb(id[i][j-1][0]);
        v[tsz].pb(id[st[i][j-1]][j-1][0]);
        ++tsz;
        id[i][j][1] = tsz;
        v[id[i][j-1][1]].pb(tsz);
        v[id[st[i][j-1]][j-1][1]].pb(tsz);
    }
    cin >> m;
    for(ll i = 1;i<=m;i++){
        ll x,y; cin >> x >> y;
        ++tsz;
        v[x].pb(tsz);
        v[tsz].pb(n+y);
        ll z = lca(x,y);
        if(z!=x){
            add(x,get(x,z),1,tsz);
            add(st[x][0],z,0,tsz);
        }
        if(z!=y){
            add(y,get(y,z),0,tsz);
            add(st[y][0],z,1,tsz);
        }
    }
    queue<ll> q;
    for(ll i = 1;i<=tsz;i++) deg[i] = 0;
    for(ll i = 1;i<=tsz;i++){
        for(ll j : v[i]) deg[j]++;
    }
    for(ll i = 1;i<=tsz;i++){
        if(!deg[i]) q.push(i);
    }
    ll cnt = 0;
    while(q.size()){
        ll x = q.front();
        q.pop();
        cnt++;
        for(ll y : v[x]){
            deg[y]--;
            if(!deg[y]) q.push(y);
        }
    }
    if(cnt!=tsz) cout<<"No"<<endl;
    else cout<<"Yes"<<endl;
    for(ll i = 1;i<=n;i++) g[i].clear();
    for(ll i = 1;i<=tsz;i++) v[i].clear();
}
int main(){
	daj_mi_malo_vremena
    int t; t = 1;
    cin >> t;
    while(t--){
        tc();
    }
	return 0;
}
/**
1
8
1 2
2 3
3 4
4 5
5 6
6 7
7 8
2
3 4
4 8

2
7
1 2
2 3
3 4
4 5
3 6
6 7
2
4 1
5 7
4
1 2
1 3
1 4
3
2 3
3 4
4 2

3
3
1 2
2 3
2
2 1
3 2
7
1 2
2 3
3 4
4 5
5 6
6 7
3
1 3
4 2
2 5
8
1 2
2 3
3 4
4 5
5 6
6 7
7 8
4
1 5
2 6
3 7
4 8
**/

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 94292 KB Output is correct
2 Correct 50 ms 94256 KB Output is correct
3 Correct 50 ms 94284 KB Output is correct
4 Correct 151 ms 94824 KB Output is correct
5 Correct 242 ms 95340 KB Output is correct
6 Correct 64 ms 94832 KB Output is correct
7 Correct 66 ms 94936 KB Output is correct
8 Correct 64 ms 94952 KB Output is correct
9 Correct 405 ms 111156 KB Output is correct
10 Runtime error 334 ms 291720 KB Execution killed with signal 6
11 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 45 ms 94236 KB Output is correct
2 Correct 45 ms 94196 KB Output is correct
3 Correct 54 ms 94836 KB Output is correct
4 Correct 54 ms 94964 KB Output is correct
5 Correct 59 ms 94920 KB Output is correct
6 Correct 59 ms 94872 KB Output is correct
7 Correct 56 ms 94964 KB Output is correct
8 Correct 62 ms 94964 KB Output is correct
9 Correct 57 ms 94960 KB Output is correct
10 Correct 55 ms 94924 KB Output is correct
11 Correct 56 ms 94864 KB Output is correct
12 Correct 52 ms 94824 KB Output is correct
13 Correct 53 ms 94924 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 45 ms 94236 KB Output is correct
2 Correct 45 ms 94196 KB Output is correct
3 Correct 54 ms 94836 KB Output is correct
4 Correct 54 ms 94964 KB Output is correct
5 Correct 59 ms 94920 KB Output is correct
6 Correct 59 ms 94872 KB Output is correct
7 Correct 56 ms 94964 KB Output is correct
8 Correct 62 ms 94964 KB Output is correct
9 Correct 57 ms 94960 KB Output is correct
10 Correct 55 ms 94924 KB Output is correct
11 Correct 56 ms 94864 KB Output is correct
12 Correct 52 ms 94824 KB Output is correct
13 Correct 53 ms 94924 KB Output is correct
14 Correct 44 ms 94288 KB Output is correct
15 Correct 47 ms 94276 KB Output is correct
16 Correct 56 ms 94900 KB Output is correct
17 Correct 59 ms 94932 KB Output is correct
18 Correct 65 ms 94992 KB Output is correct
19 Correct 50 ms 94252 KB Output is correct
20 Correct 57 ms 94928 KB Output is correct
21 Correct 64 ms 94896 KB Output is correct
22 Correct 57 ms 94896 KB Output is correct
23 Correct 47 ms 94248 KB Output is correct
24 Correct 49 ms 94504 KB Output is correct
25 Correct 57 ms 94992 KB Output is correct
26 Correct 56 ms 94924 KB Output is correct
27 Correct 59 ms 94896 KB Output is correct
28 Correct 57 ms 94304 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 45 ms 94236 KB Output is correct
2 Correct 45 ms 94196 KB Output is correct
3 Correct 54 ms 94836 KB Output is correct
4 Correct 54 ms 94964 KB Output is correct
5 Correct 59 ms 94920 KB Output is correct
6 Correct 59 ms 94872 KB Output is correct
7 Correct 56 ms 94964 KB Output is correct
8 Correct 62 ms 94964 KB Output is correct
9 Correct 57 ms 94960 KB Output is correct
10 Correct 55 ms 94924 KB Output is correct
11 Correct 56 ms 94864 KB Output is correct
12 Correct 52 ms 94824 KB Output is correct
13 Correct 53 ms 94924 KB Output is correct
14 Correct 44 ms 94288 KB Output is correct
15 Correct 47 ms 94276 KB Output is correct
16 Correct 56 ms 94900 KB Output is correct
17 Correct 59 ms 94932 KB Output is correct
18 Correct 65 ms 94992 KB Output is correct
19 Correct 50 ms 94252 KB Output is correct
20 Correct 57 ms 94928 KB Output is correct
21 Correct 64 ms 94896 KB Output is correct
22 Correct 57 ms 94896 KB Output is correct
23 Correct 47 ms 94248 KB Output is correct
24 Correct 49 ms 94504 KB Output is correct
25 Correct 57 ms 94992 KB Output is correct
26 Correct 56 ms 94924 KB Output is correct
27 Correct 59 ms 94896 KB Output is correct
28 Correct 57 ms 94304 KB Output is correct
29 Correct 61 ms 94968 KB Output is correct
30 Correct 59 ms 95040 KB Output is correct
31 Correct 55 ms 95060 KB Output is correct
32 Correct 57 ms 95044 KB Output is correct
33 Correct 59 ms 95024 KB Output is correct
34 Correct 65 ms 94876 KB Output is correct
35 Correct 57 ms 94924 KB Output is correct
36 Correct 53 ms 94976 KB Output is correct
37 Correct 56 ms 94896 KB Output is correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 45 ms 94236 KB Output is correct
2 Correct 45 ms 94196 KB Output is correct
3 Correct 54 ms 94836 KB Output is correct
4 Correct 54 ms 94964 KB Output is correct
5 Correct 59 ms 94920 KB Output is correct
6 Correct 59 ms 94872 KB Output is correct
7 Correct 56 ms 94964 KB Output is correct
8 Correct 62 ms 94964 KB Output is correct
9 Correct 57 ms 94960 KB Output is correct
10 Correct 55 ms 94924 KB Output is correct
11 Correct 56 ms 94864 KB Output is correct
12 Correct 52 ms 94824 KB Output is correct
13 Correct 53 ms 94924 KB Output is correct
14 Correct 44 ms 94288 KB Output is correct
15 Correct 47 ms 94276 KB Output is correct
16 Correct 56 ms 94900 KB Output is correct
17 Correct 59 ms 94932 KB Output is correct
18 Correct 65 ms 94992 KB Output is correct
19 Correct 50 ms 94252 KB Output is correct
20 Correct 57 ms 94928 KB Output is correct
21 Correct 64 ms 94896 KB Output is correct
22 Correct 57 ms 94896 KB Output is correct
23 Correct 47 ms 94248 KB Output is correct
24 Correct 49 ms 94504 KB Output is correct
25 Correct 57 ms 94992 KB Output is correct
26 Correct 56 ms 94924 KB Output is correct
27 Correct 59 ms 94896 KB Output is correct
28 Correct 57 ms 94304 KB Output is correct
29 Correct 61 ms 94968 KB Output is correct
30 Correct 59 ms 95040 KB Output is correct
31 Correct 55 ms 95060 KB Output is correct
32 Correct 57 ms 95044 KB Output is correct
33 Correct 59 ms 95024 KB Output is correct
34 Correct 65 ms 94876 KB Output is correct
35 Correct 57 ms 94924 KB Output is correct
36 Correct 53 ms 94976 KB Output is correct
37 Correct 56 ms 94896 KB Output is correct
38 Correct 426 ms 111192 KB Output is correct
39 Runtime error 339 ms 291680 KB Execution killed with signal 6
40 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 50 ms 94244 KB Output is correct
2 Correct 55 ms 94300 KB Output is correct
3 Correct 48 ms 94204 KB Output is correct
4 Correct 47 ms 94244 KB Output is correct
5 Correct 94 ms 94380 KB Output is correct
6 Correct 57 ms 94908 KB Output is correct
7 Correct 58 ms 94928 KB Output is correct
8 Correct 49 ms 94284 KB Output is correct
9 Correct 47 ms 94216 KB Output is correct
10 Correct 48 ms 94520 KB Output is correct
11 Correct 56 ms 94272 KB Output is correct
12 Correct 59 ms 95012 KB Output is correct
13 Correct 180 ms 95160 KB Output is correct
14 Correct 286 ms 95500 KB Output is correct
15 Correct 251 ms 95364 KB Output is correct
16 Runtime error 342 ms 292672 KB Execution killed with signal 6
17 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 94292 KB Output is correct
2 Correct 50 ms 94256 KB Output is correct
3 Correct 50 ms 94284 KB Output is correct
4 Correct 151 ms 94824 KB Output is correct
5 Correct 242 ms 95340 KB Output is correct
6 Correct 64 ms 94832 KB Output is correct
7 Correct 66 ms 94936 KB Output is correct
8 Correct 64 ms 94952 KB Output is correct
9 Correct 405 ms 111156 KB Output is correct
10 Runtime error 334 ms 291720 KB Execution killed with signal 6
11 Halted 0 ms 0 KB -