oj.uz

Submission #307492

# Submission time Handle Problem Language Result Execution time Memory
307492 2020-09-28T11:03:53 Z bigDuck Colors (RMI18_colors) C++14
22 / 100
 166 ms 23628 KB 
#include<bits/stdc++.h>
using namespace std;
#define INIT  ios_base :: sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
#define mp make_pair
#define pb push_back
#define ft first
#define sc second
#define ll long long
#define pii pair<int, int>
#define count_bits __builtin_popcount
#define int ll

int ts, n, m, k, a[150010], b[150010], q, l, r;
vector<int> oa[150010], ob[150010];

struct query{
int l, r, u, v;
};
vector<query> seg[600010];



struct DSU{
int ptr[150010], sz[150010]; bool mrk[150010];
};
DSU dsu;


struct ch{
int u, v, t;
};
stack<ch> st;


int find_root(int x){ int cr=x; while(dsu.ptr[cr]!=cr){cr=dsu.ptr[cr];}return cr; }

void unite(int u, int v, int t){
    int ru=find_root(u), rv=find_root(v);
    if(ru==rv){return;}

    if(dsu.sz[ru]>=dsu.sz[rv]){
        dsu.ptr[rv]=ru; dsu.sz[ru]+=dsu.sz[rv];
        ch c; c.u=ru; c.v=rv; c.t=t; st.push(c);
    }
    else{
        dsu.ptr[ru]=rv; dsu.sz[rv]+=dsu.sz[ru];
        ch c; c.u=rv; c.v=ru; c.t=t; st.push(c);
    }

}

void separ(int u, int v){
dsu.ptr[v]=v; dsu.sz[u]-=dsu.sz[v];
return;
}

void roll_back(int t){
    while((!st.empty()) && ( ((st.top()).t)>=t)){
        auto c=st.top(); st.pop(); separ(c.u, c.v);
    }
    return;
}




void ins(int nod, query q0, int tl, int tr){
if(q0.l>q0.r){return;}

if( (tl==q0.l) && (tr==q0.r) ){
    seg[nod].pb(q0); return;
}

int med=(tl+tr)/2;
query q1=q0; q1.r=min(q1.r,med);
ins(nod*2, q1, tl, med);
q1.r=q0.r; q1.l=max(med+1, q0.l);
ins(2*nod+1, q1, med+1, tr);
}


void clean(int nod, int tl , int tr){
    int med=(tl+tr)/2;

seg[nod].clear(); if(tl==tr){return;} clean(nod*2, tl, med); clean(nod*2+1, med+1, tr);
}



bool rec(int nod, int tl, int tr, int t){
 bool res=true;
for(auto q0:seg[nod]){
    unite(q0.u, q0.v, t);
}
if(tl==tr){
    if(ob[tl].size()==0){return true;}
    for(auto u:oa[tl]){
        int rt=find_root(u);
        dsu.mrk[rt]=true;
    }
    for(auto u:ob[tl]){
        int rt=find_root(u);
        if(!dsu.mrk[rt]){res=false; break;}
    }
    for(auto u:oa[tl]){
        int rt=find_root(u);
        dsu.mrk[rt]=false;
    }
    roll_back(t);
    return res;
}

int med=(tl+tr)/2;

bool r1=rec(nod*2, tl, med, t+1);
bool r2=rec(nod*2+1, med+1, tr, t+1);
roll_back(t);
return (r1&&r2);
}





int32_t main(){
INIT
cin>>ts;


while(ts--){
    cin>>n>>m;

    for(int i=1; i<=n; i++){dsu.ptr[i]=i; dsu.sz[i]=1; dsu.mrk[i]=false;}

    for(int i=1; i<=n; i++){cin>>a[i]; oa[a[i] ].pb(i);}
    for(int i=1; i<=n; i++){cin>>b[i]; ob[b[i] ].pb(i);}
    for(int i=1; i<=m; i++){
        int u, v; cin>>u>>v;
        query q0; q0.u=u; q0.v=v; q0.l=max(b[u], b[v]); q0.r=min(a[u], a[v]);
        ins(1, q0, 1, n);
    }
    bool res=rec(1, 1, n, 1);
    for(int i=1; i<=n;i++){
        if(a[i]<b[i]){res=false; break;}
    }
    cout<<res<<"\n";
    for(int i=1; i<=n; i++){ oa[i].clear(); ob[i].clear();}
    clean(1, 1, n);
}



return 0;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 21752 KB Output is correct
2 Correct 41 ms 22392 KB Output is correct
3 Correct 20 ms 22528 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 92 ms 22264 KB Output is correct

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 88 ms 22008 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 88 ms 22008 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 21752 KB Output is correct
2 Correct 41 ms 22392 KB Output is correct
3 Correct 20 ms 22528 KB Output is correct
4 Incorrect 88 ms 22008 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #6
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 166 ms 23628 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 57 ms 21880 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 21752 KB Output is correct
2 Correct 41 ms 22392 KB Output is correct
3 Correct 20 ms 22528 KB Output is correct
4 Correct 92 ms 22264 KB Output is correct
5 Incorrect 88 ms 22008 KB Output isn't correct
6 Halted 0 ms 0 KB -