oj.uz

Submission #1040098

# Submission time Handle Problem Language Result Execution time Memory
1040098 2024-07-31T16:13:31 Z hotboy2703 Sweeping (JOI20_sweeping) C++17
100 / 100
 15966 ms 952224 KB 
#include<bits/stdc++.h>
using ll = long long;
using namespace std;
#define pll pair <ll,ll>
#define fi first
#define se second
#define MP make_pair
#define sz(a) (ll((a).size()))
#define BIT(mask,i) (((mask) >> (i))&1)
#define MASK(i) (1LL << (i))
const ll INF = 1e18;
const ll MAXN = 1.5e6+100;
struct query{
    ll t,p,x,y;
};
pll ans[MAXN];
ll val[MAXN*2];
ll dsu[MAXN*2];
ll side[MAXN*2];
vector <ll> comp[MAXN*2];

ll n,m,q;
ll join(ll x,ll y){
    if (sz(comp[x]) < sz(comp[y]))swap(x,y);
    for (auto z:comp[y]){comp[x].push_back(z);dsu[z] = x;}
    return x;
}
void dnc(ll l,ll r,vector <query> all){
    ll mid = (l + r) >> 1;
    vector <query> L,R;

    for (auto x:all){
        if (x.t == 4){
            dsu[x.p<<1] = x.p<<1;
            dsu[x.p<<1|1] = x.p<<1|1;
            comp[x.p<<1] = {x.p<<1};
            comp[x.p<<1|1] = {x.p<<1|1};
            val[x.p<<1] = x.x;
            val[x.p<<1|1] = x.y;
            side[x.p] = 0;
        }
    }
    if (l==r){
        for (auto [t,p,x,y]:all){
            if (t==1){
                ans[x] = MP(val[p<<1],val[p<<1|1]);  
            }
        }
        return;
    }
    priority_queue <pll,vector <pll>, greater <> > px,py;
    for (auto cur:all){
        auto [t,p,x,y] = cur;
        if (t==1){
            if (side[p] == 0){
                // cout<<l<<' '<<r<<' '<<x<<' '<<p<<endl;
                ans[x] = MP(val[dsu[p<<1]],val[dsu[p<<1|1]]); 
            }
            else if (side[p] == 1)L.push_back(cur);
            else if (side[p] == 2){R.push_back(cur);}
        }
        if (t==2){
            if (n-x>=mid+1){
                
                while (!py.empty() && py.top().fi <= x){
                    ll u = py.top().se;
                    py.pop();
                    for (auto z:comp[u]){
                        if (side[z>>1]==0){
                            // cout<<l<<' '<<r<<' '<<(z>>1)<<' '<<val[dsu[16]]<<' '<<val[dsu[17]]<<endl;
                            side[z>>1] = 2;
                            z = z>>1;
                            // if (z==8)cout<<"SUS "<<l<<' '<<r<<' '<<side[z]<<' '<<val[z<<1]<<' '<<val[z<<1|1]<<'\n';
                            R.push_back({4,z,n-x,val[u]});
                        }
                    }
                }R.push_back(cur);
                
            }
            else{
                ll r = 0;
                while (!px.empty() && px.top().fi <= n-x){
                    ll u = px.top().se;
                    px.pop();
                    // cout<<l<<' '<<r<<' '<<u<<endl;
                    r = r?join(r,u):u;
                }
                if (r){
                    val[r] = n-x;
                    // cout<<val[dsu[16]]<<endl;
                    px.push(MP(val[r],r));
                }
                L.push_back(cur);
            }
        }
        if (t==3){
            if (x <= mid){
                
                while (!px.empty() && px.top().fi <= x){
                    ll u = px.top().se;
                    px.pop();
                    for (auto z:comp[u]){
                        if (side[z>>1]==0){
                            side[z>>1] = 1;
                            // val[z] = val[u];
                            // val[z^1] = n-x;
                            z=z>>1;
                            L.push_back({4,z,val[u],n-x});
                        }
                    }
                }
                L.push_back(cur);
            }
            else{
                
                ll r = 0;
                while (!py.empty() && py.top().fi <= n-x){
                    ll u = py.top().se;
                    py.pop();
                    r = r?join(r,u):u;
                }
                if (r){
                    val[r] = n-x;
                    py.push(MP(val[r],r));
                }
                R.push_back(cur);
            }
        }
        if (t==4){
            if (x >= mid + 1){
                R.push_back(cur);
                side[p] = 2;
            }
            else if (y >= n-mid){
                L.push_back(cur);
                side[p] = 1;
            }
            else{
                px.push(MP(val[p<<1],p<<1));
                py.push(MP(val[p<<1|1],p<<1|1));
            }
        }
    }
    
    dnc(l,mid,L);
    dnc(mid+1,r,R);
}
int main(){
    ios_base::sync_with_stdio(0);cin.tie(nullptr);
    cin>>n>>m>>q;
    vector <query> all;
    ll ptr = 0;
    for (ll i = 1;i <= m;i ++){
        ll x,y;
        cin>>x>>y;
        all.push_back({4,++ptr,x,y});
    }
    ll cnt=0;
    for (ll i = 1;i <= q;i ++){
        ll t;
        cin>>t;
        if (t==1){
            ll p;
            cin>>p;
            all.push_back({1,p,++cnt,-1});
        }
        if (t==2){
            ll x;
            cin>>x;
            all.push_back({2,-1,x,-1});
        }
        if (t==3){
            ll x;
            cin>>x;
            all.push_back({3,-1,x,-1});
        }
        if (t==4){
            ll x,y;
            cin>>x>>y;
            all.push_back({4,++ptr,x,y});
        }
    }
    dnc(0,n,all);
    for (ll i = 1;i <= cnt;i ++)cout<<ans[i].fi<<' '<<ans[i].se<<'\n';
    return 0;
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 11433 ms 72752 KB Output is correct
2 Correct 10613 ms 72152 KB Output is correct
3 Correct 23 ms 72156 KB Output is correct
4 Correct 11499 ms 72800 KB Output is correct
5 Correct 24 ms 72928 KB Output is correct
6 Correct 21 ms 72096 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 13800 ms 428712 KB Output is correct
2 Correct 13976 ms 451316 KB Output is correct
3 Correct 13721 ms 445936 KB Output is correct
4 Correct 13725 ms 568716 KB Output is correct
5 Correct 14655 ms 491288 KB Output is correct
6 Correct 14480 ms 538676 KB Output is correct
7 Correct 14474 ms 430552 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 13410 ms 507508 KB Output is correct
2 Correct 13226 ms 544172 KB Output is correct
3 Correct 13231 ms 545008 KB Output is correct
4 Correct 13708 ms 795328 KB Output is correct
5 Correct 13563 ms 660876 KB Output is correct
6 Correct 13445 ms 513764 KB Output is correct

Subtask #4
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 13410 ms 507508 KB Output is correct
2 Correct 13226 ms 544172 KB Output is correct
3 Correct 13231 ms 545008 KB Output is correct
4 Correct 13708 ms 795328 KB Output is correct
5 Correct 13563 ms 660876 KB Output is correct
6 Correct 13445 ms 513764 KB Output is correct
7 Correct 14224 ms 456888 KB Output is correct
8 Correct 14279 ms 487712 KB Output is correct
9 Correct 14118 ms 463244 KB Output is correct
10 Correct 13846 ms 523388 KB Output is correct
11 Correct 14430 ms 669224 KB Output is correct
12 Correct 15006 ms 600296 KB Output is correct
13 Correct 14539 ms 917512 KB Output is correct
14 Correct 138 ms 190584 KB Output is correct
15 Correct 558 ms 327480 KB Output is correct
16 Correct 14328 ms 454788 KB Output is correct
17 Correct 13999 ms 489016 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 11433 ms 72752 KB Output is correct
2 Correct 10613 ms 72152 KB Output is correct
3 Correct 23 ms 72156 KB Output is correct
4 Correct 11499 ms 72800 KB Output is correct
5 Correct 24 ms 72928 KB Output is correct
6 Correct 21 ms 72096 KB Output is correct
7 Correct 13800 ms 428712 KB Output is correct
8 Correct 13976 ms 451316 KB Output is correct
9 Correct 13721 ms 445936 KB Output is correct
10 Correct 13725 ms 568716 KB Output is correct
11 Correct 14655 ms 491288 KB Output is correct
12 Correct 14480 ms 538676 KB Output is correct
13 Correct 14474 ms 430552 KB Output is correct
14 Correct 13410 ms 507508 KB Output is correct
15 Correct 13226 ms 544172 KB Output is correct
16 Correct 13231 ms 545008 KB Output is correct
17 Correct 13708 ms 795328 KB Output is correct
18 Correct 13563 ms 660876 KB Output is correct
19 Correct 13445 ms 513764 KB Output is correct
20 Correct 14224 ms 456888 KB Output is correct
21 Correct 14279 ms 487712 KB Output is correct
22 Correct 14118 ms 463244 KB Output is correct
23 Correct 13846 ms 523388 KB Output is correct
24 Correct 14430 ms 669224 KB Output is correct
25 Correct 15006 ms 600296 KB Output is correct
26 Correct 14539 ms 917512 KB Output is correct
27 Correct 138 ms 190584 KB Output is correct
28 Correct 558 ms 327480 KB Output is correct
29 Correct 14328 ms 454788 KB Output is correct
30 Correct 13999 ms 489016 KB Output is correct
31 Correct 13864 ms 527092 KB Output is correct
32 Correct 14086 ms 448008 KB Output is correct
33 Correct 14067 ms 406156 KB Output is correct
34 Correct 15037 ms 520752 KB Output is correct
35 Correct 15568 ms 485600 KB Output is correct
36 Correct 14778 ms 538780 KB Output is correct
37 Correct 15966 ms 870860 KB Output is correct
38 Correct 15439 ms 952224 KB Output is correct
39 Correct 15477 ms 821644 KB Output is correct
40 Correct 14615 ms 492332 KB Output is correct