oj.uz

Submission #493903

# Submission time Handle Problem Language Result Execution time Memory
493903 2021-12-13T10:38:32 Z balbit Trampoline (info1cup20_trampoline) C++14
100 / 100
 968 ms 51904 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define f first
#define s second
#define pii pair<ll, ll>

#define REP(i,n) for (int i = 0; i<n; ++i)
#define REP1(i,n) for (int i = 1; i<=n; ++i)
#define MX(a,b) a = max(a,b)
#define MN(a,b) a = min(a,b)

#define ALL(x) (x).begin(), (x).end()
#define SZ(x) (int)((x).size())
#define pb push_back

#ifdef BALBIT
#define bug(...) cerr<<"#"<<__LINE__<<": "<<#__VA_ARGS__<<"- ", _do(__VA_ARGS__)
template<typename T> void _do( T && x) {cerr<<x<<endl;}
template<typename T, typename ...S> void _do( T && x, S && ...y) {cerr<<x<<", "; _do(y...);}
#else
#define bug(...)
#define endl '\n'
#endif // BALBIT


const int maxn = 2e5+5;
int row[maxn], col[maxn];
int nxt[20][maxn];
map<int, vector<pii> > mp; // the vectors store {col, index}

signed main(){
    ios::sync_with_stdio(0), cin.tie(0);

    bug(1,2);

    int R,C; cin>>R>>C;
    int n; cin>>n;
    REP(i,n) {
        int r, c; cin>>r>>c;
        mp[r].pb({c, i});
        row[i] = r; col[i] = c;
    }

    nxt[0][n] = n; row[n] = R+1; col[n] = C+1;

    for (auto &u : mp) {
        sort(ALL(u.s));
    }
    for (auto &u : mp) {
        for (pii p : u.s) {
            auto it = lower_bound(ALL(mp[u.f+1]), pii{p.f, -1});
            if (it == mp[u.f+1].end()) {
                nxt[0][p.s] = n;
            }else{
                nxt[0][p.s] = it->s;
            }
        }
    }

    for (int j = 1; j<20; ++j) {
        REP(i,n+1) {
            nxt[j][i] = nxt[j-1][nxt[j-1][i]];
        }
    }

    int q; cin>>q;
    while (q--) {
        ll Rs, Cs, Re, Ce;
        cin>>Rs>>Cs>>Re>>Ce;
        if (Re < Rs || Ce < Cs) {
            bug("bruh");
            cout<<"No"<<endl; continue;
        }
        if (Re == Rs) {
            bug("same row...");
            cout<<"Yes"<<endl; continue;
        }
        if (!mp.count(Rs)) {
            bug("no available down");
            cout<<"No"<<endl; continue;
        }
        auto it = lower_bound(ALL(mp[Rs]), make_pair(Cs, -1ll));
        int who = (it==mp[Rs].end())?(n) : it->s;
        if (it != mp[Rs].end())
            bug(it->f, it->s);
        for (int i = 19; i>=0; --i) {
            int ty = nxt[i][who];
            if (ty != n && row[ty] < Re) {
                who = nxt[i][who];
            }
        }
        if (who!=n && row[who] == Re-1 && col[who] <= Ce) {
            cout<<"Yes"<<endl;
        }else{
            bug("Sorry! Toof ar!");
            cout<<"No"<<endl;
        }

    }


}

Subtask #1
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 1356 KB 200 token(s): yes count is 21, no count is 179
2 Correct 4 ms 1612 KB 200 token(s): yes count is 70, no count is 130
3 Correct 3 ms 1228 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 90 ms 23364 KB 4000 token(s): yes count is 99, no count is 3901
2 Correct 88 ms 25216 KB 4000 token(s): yes count is 91, no count is 3909
3 Correct 79 ms 23492 KB 4000 token(s): yes count is 4000, no count is 0
4 Correct 95 ms 25216 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 238 ms 22708 KB 200000 token(s): yes count is 110486, no count is 89514
2 Correct 299 ms 22016 KB 200000 token(s): yes count is 114664, no count is 85336
3 Correct 289 ms 22040 KB 200000 token(s): yes count is 86232, no count is 113768
4 Correct 464 ms 23396 KB 200000 token(s): yes count is 94603, no count is 105397
5 Correct 434 ms 23404 KB 200000 token(s): yes count is 94148, no count is 105852
6 Correct 683 ms 28744 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 5 ms 1024 KB 5000 token(s): yes count is 3238, no count is 1762
2 Correct 6 ms 1228 KB 5000 token(s): yes count is 3837, no count is 1163
3 Correct 9 ms 2124 KB 5000 token(s): yes count is 4104, no count is 896
4 Correct 5 ms 1228 KB 5000 token(s): yes count is 3934, no count is 1066
5 Correct 9 ms 1356 KB 5000 token(s): yes count is 3384, no count is 1616
6 Correct 5 ms 1228 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 756 ms 29940 KB 200000 token(s): yes count is 171404, no count is 28596
2 Correct 605 ms 37096 KB 200000 token(s): yes count is 161254, no count is 38746
3 Correct 291 ms 33936 KB 200000 token(s): yes count is 117455, no count is 82545
4 Correct 968 ms 51904 KB 200000 token(s): yes count is 182118, no count is 17882
5 Correct 525 ms 39872 KB 200000 token(s): yes count is 167565, no count is 32435
6 Correct 332 ms 34352 KB 200000 token(s): yes count is 156797, no count is 43203
7 Correct 315 ms 34428 KB 200000 token(s): yes count is 156797, no count is 43203
8 Correct 284 ms 33740 KB 200000 token(s): yes count is 122100, no count is 77900
9 Correct 701 ms 40312 KB 200000 token(s): yes count is 139670, no count is 60330
10 Correct 753 ms 40972 KB 200000 token(s): yes count is 165806, no count is 34194
11 Correct 854 ms 45880 KB 200000 token(s): yes count is 175646, no count is 24354
12 Correct 261 ms 33204 KB 200000 token(s): yes count is 134695, no count is 65305
13 Correct 268 ms 34120 KB 200000 token(s): yes count is 126733, no count is 73267
14 Correct 409 ms 35068 KB 200000 token(s): yes count is 155290, no count is 44710
15 Correct 238 ms 33616 KB 200000 token(s): yes count is 129674, no count is 70326