oj.uz

Submission #482032

# Submission time Handle Problem Language Result Execution time Memory
482032 2021-10-22T17:03:59 Z Redhood Trampoline (info1cup20_trampoline) C++14
100 / 100
 592 ms 76984 KB 
#include<bits/stdc++.h>
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
#define fi first
#define se second

using namespace __gnu_pbds;
using namespace std;
using namespace __gnu_cxx;
using namespace std;



const int N = (int)2e5 + 10;

vector < int > g[N];
int pred[N], h[N];
int son[N], used[N];

array < int , 4 > q[N];/// x1 , y1 , x2 , y2
bool ans[N];
vector < int > stac;
vector < pair < int , int > > dots;


vector < int > que[N];
vector < int > P[N], y[N];
void dfs(int v, int H){
    stac.pb(v);
    used[v] = 1;
    h[v] = H;


    for(auto &i : que[v]){
        int w = q[i][2] - q[i][0] - 1;
        if(h[v] < w){
            continue;
        }
        int id = sz(stac)-1-w;
        int par = stac[id];
        if(dots[par].se <= q[i][3]){
            ans[i] = 1;
        }
    }

    for(auto u : g[v]){
        assert(!used[u]);
        pred[u] = v;
        dfs(u, H + 1);
    }
    stac.pop_back();
}
int main()
{
    ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    int R , C, n , t;
    cin >> R >> C >> n;
    dots.resize(n);
    for(auto &i : dots)
        cin >> i.fi >> i.se;
    cin >> t;


    vector < int > rows;
    for(auto &i : dots)
        rows.pb(i.fi);
    sort(all(rows));
    rows.erase(unique(all(rows)), rows.end());
    reverse(all(rows));

    vector < int > perm(n);
    iota(all(perm) , 0);
    sort(all(perm) , [&](int x , int y){
            if(dots[x].fi == dots[y].fi){
                return dots[x].se < dots[y].se;
            }
            return dots[x].fi > dots[y].fi;

         });
    int lst = 0;


    vector < int > cand, val;

    int jj = 0;
    for(int r : rows){

        vector < int > cur;
        while(lst < sz(perm) && dots[perm[lst]].fi == r){
            /// add it
            y[jj].pb(dots[perm[lst]].se);
            P[jj].pb(perm[lst]);
            cur.pb(perm[lst]);


            int id = lower_bound(all(val) , dots[perm[lst]].se) - val.begin();
            if(id != sz(val)){
                int par = cand[id];
                son[perm[lst]] = 1;
                g[par].pb(perm[lst]);
            }
            lst++;
        }
        cand.clear(), val.clear();
        for(int f : cur){
            cand.pb(f);
            val.pb(dots[f].se);
        }
        vector<int>t=val;
        sort(all(t));
        assert(t==val);
        jj++;
    }


    reverse(all(rows));
    /// reversed oder
    for(int i = 0 ; i < t; ++i){
        int x1 , y1 , x2 , y2;
        cin >> x1 >> y1 >> x2 >> y2;
        if(x1 > x2 || y1 > y2){
            continue;
        }
        if(x1 == x2){
            ans[i] = 1;
            continue;
        }
        q[i] = {x1 , y1 , x2 , y2};
        int v;

        int id = lower_bound(all(rows), x1) - rows.begin();
        if(id == sz(rows)){
            continue;
        }
        if(rows[id] != x1){
            continue;
        }
//        cout << i << "FOUND " << endl;
        id = sz(rows) - 1 - id;


        int id1 = lower_bound(all(y[id]), y1) - y[id].begin();
        if(id1 == sz(y[id])){
            continue;
        }
//        cout << i << " FOUND " << v << endl;
        v = P[id][id1];
        que[v].pb(i);
    }

    for(int i = 0 ; i < n; ++i){
        if(!son[i]){
            assert(!used[i]);
            pred[i] = i;
            dfs(i , 0);
        }
    }

    for(int i = 0; i < t; ++i){
        cout << (ans[i] ? "Yes" : "No") << '\n';
    }
    return 0;
}

Subtask #1
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 19660 KB 200 token(s): yes count is 21, no count is 179
2 Correct 16 ms 19760 KB 200 token(s): yes count is 70, no count is 130
3 Correct 13 ms 19636 KB 197 token(s): yes count is 25, no count is 172

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 135 ms 33176 KB 4000 token(s): yes count is 99, no count is 3901
2 Correct 129 ms 33208 KB 4000 token(s): yes count is 91, no count is 3909
3 Correct 134 ms 34532 KB 4000 token(s): yes count is 4000, no count is 0
4 Correct 131 ms 33316 KB 4000 token(s): yes count is 1991, no count is 2009

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 302 ms 46928 KB 200000 token(s): yes count is 110486, no count is 89514
2 Correct 451 ms 42268 KB 200000 token(s): yes count is 114664, no count is 85336
3 Correct 478 ms 41792 KB 200000 token(s): yes count is 86232, no count is 113768
4 Correct 394 ms 42980 KB 200000 token(s): yes count is 94603, no count is 105397
5 Correct 465 ms 43188 KB 200000 token(s): yes count is 94148, no count is 105852
6 Correct 554 ms 49896 KB 200000 token(s): yes count is 97163, no count is 102837

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 19936 KB 5000 token(s): yes count is 3238, no count is 1762
2 Correct 16 ms 19868 KB 5000 token(s): yes count is 3837, no count is 1163
3 Correct 15 ms 20164 KB 5000 token(s): yes count is 4104, no count is 896
4 Correct 14 ms 19900 KB 5000 token(s): yes count is 3934, no count is 1066
5 Correct 16 ms 19980 KB 5000 token(s): yes count is 3384, no count is 1616
6 Correct 14 ms 19884 KB 5000 token(s): yes count is 3390, no count is 1610

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 446 ms 59140 KB 200000 token(s): yes count is 171404, no count is 28596
2 Correct 372 ms 52892 KB 200000 token(s): yes count is 161254, no count is 38746
3 Correct 272 ms 49108 KB 200000 token(s): yes count is 117455, no count is 82545
4 Correct 409 ms 76984 KB 200000 token(s): yes count is 182118, no count is 17882
5 Correct 338 ms 59228 KB 200000 token(s): yes count is 167565, no count is 32435
6 Correct 286 ms 50068 KB 200000 token(s): yes count is 156797, no count is 43203
7 Correct 296 ms 49976 KB 200000 token(s): yes count is 156797, no count is 43203
8 Correct 275 ms 49128 KB 200000 token(s): yes count is 122100, no count is 77900
9 Correct 364 ms 57436 KB 200000 token(s): yes count is 139670, no count is 60330
10 Correct 392 ms 58204 KB 200000 token(s): yes count is 165806, no count is 34194
11 Correct 592 ms 66828 KB 200000 token(s): yes count is 175646, no count is 24354
12 Correct 296 ms 47788 KB 200000 token(s): yes count is 134695, no count is 65305
13 Correct 238 ms 47964 KB 200000 token(s): yes count is 126733, no count is 73267
14 Correct 329 ms 50924 KB 200000 token(s): yes count is 155290, no count is 44710
15 Correct 286 ms 49176 KB 200000 token(s): yes count is 129674, no count is 70326