oj.uz

Submission #331326

# Submission time Handle Problem Language Result Execution time Memory
331326 2020-11-28T02:58:29 Z Falcon None (JOI16_matryoshka) C++17
100 / 100
 308 ms 8552 KB 
#pragma GCC optimize("O2")

#include <bits/stdc++.h>

#ifdef DEBUG
#include "debug.hpp"
#endif

using namespace std;

#define all(c)              (c).begin(), (c).end()
#define rall(c)             (c).rbegin(), (c).rend()
#define traverse(c, it)     for(auto it = (c).begin(); it != (c).end(); ++it)
#define rep(i, N)           for(int i = 0; i < (N); ++i)
#define rrep(i, N)          for(int i = (N) - 1; i >= 0; --i)
#define rep1(i, N)          for(int i = 1; i <= (N); ++i)
#define rep2(i, s, e)       for(int i = (s); i <= (e); ++i)
#define rep3(i, s, e, d)    for(int i = (s); (d) >= 0 ? i <= (e) : i >= (e); i += (d))

#ifdef DEBUG
#define debug(x...)         { \
                            ++dbg::depth; \
                            string dbg_vals = dbg::to_string(x); \
                            --dbg::depth; \
                            dbg::fprint(__func__, __LINE__, #x, dbg_vals); \
                            }

#define light_debug(x)      { \
                            dbg::light = true; \
                            dbg::dout << __func__ << ":" << __LINE__; \
                            dbg::dout << "  " << #x << " = " << x << endl; \
                            dbg::light = false; \
                            }
#else
#define debug(x...)         42
#define light_debug(x)      42
#endif


using ll = long long;

template<typename T>
inline T& ckmin(T& a, T b) { return a = a > b ? b : a; }

template<typename T>
inline T& ckmax(T& a, T b) { return a = a < b ? b : a; }

template<int n>
class segment_tree {
    array<int, n << 1> a;

public:

    void update(int i, int v) {
        for(a[i += n] = v, i >>= 1; i > 0; i >>= 1)
            a[i] = max(a[i << 1], a[i << 1 | 1]);
    }

    int query(int s, int e) const {
        int r{};
        for(s += n, e += n; s < e; s >>= 1, e >>= 1) {
            if(s & 1) ckmax(r, a[s++]);
            if(e & 1) ckmax(r, a[--e]);
        }
        return r;
    }
};



constexpr int MAXV{200'000};

segment_tree<MAXV> seg;


int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    
    #ifdef DEBUG
    freopen("debug", "w", stderr);
    #endif
    
    int N, Q; cin >> N >> Q;

    vector<pair<int, int>> v(N);

    rep(i, N) cin >> v[i].first >> v[i].second, v[i].second = MAXV - v[i].second;

    sort(rall(v));

    struct compress {
        vector<int> values;

        void insert(int x) { values.push_back(x); }

        void apply() { sort(all(values)); values.erase(unique(all(values)), values.end()); }

        int get_rank(int x) const { return int(lower_bound(all(values), x) - values.begin()); }
    };

    compress Y;

    for(const auto& [x, y] : v) Y.insert(y);
    Y.apply();
    for(auto& [x, y] : v) y = Y.get_rank(y);

    struct query { int A, B, i; };
    vector<query> queries; queries.reserve(Q);
    rep(i, Q) {
        int A, B; cin >> A >> B; B = MAXV - B;
        B = Y.get_rank(B);
        queries.push_back({A, B, i});
    }

    sort(rall(queries),[](const query& a, const query& b) { return a.A < b.A; });

    auto p = v.begin();
    vector<int> ans(Q);
    for(const query& q : queries) {
        for(; p != v.end() && p->first >= q.A; ++p)
            seg.update(p->second, 1 + seg.query(p->second, MAXV));
        ans[q.i] = seg.query(q.B, MAXV);
    }

    for(int x : ans) cout << x << '\n';

    #ifdef DEBUG
    dbg::dout << "\nExecution time: " << clock() * 1000 / CLOCKS_PER_SEC  << "ms" << endl;
    #endif

    return 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 2 ms 364 KB Output is correct
23 Correct 7 ms 492 KB Output is correct
24 Correct 3 ms 492 KB Output is correct
25 Correct 3 ms 492 KB Output is correct
26 Correct 3 ms 492 KB Output is correct
27 Correct 3 ms 492 KB Output is correct
28 Correct 3 ms 492 KB Output is correct
29 Correct 3 ms 492 KB Output is correct
30 Correct 2 ms 492 KB Output is correct
31 Correct 3 ms 492 KB Output is correct
32 Correct 3 ms 492 KB Output is correct
33 Correct 3 ms 492 KB Output is correct
34 Correct 3 ms 492 KB Output is correct
35 Correct 3 ms 492 KB Output is correct

Subtask #4
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 2 ms 364 KB Output is correct
23 Correct 7 ms 492 KB Output is correct
24 Correct 3 ms 492 KB Output is correct
25 Correct 3 ms 492 KB Output is correct
26 Correct 3 ms 492 KB Output is correct
27 Correct 3 ms 492 KB Output is correct
28 Correct 3 ms 492 KB Output is correct
29 Correct 3 ms 492 KB Output is correct
30 Correct 2 ms 492 KB Output is correct
31 Correct 3 ms 492 KB Output is correct
32 Correct 3 ms 492 KB Output is correct
33 Correct 3 ms 492 KB Output is correct
34 Correct 3 ms 492 KB Output is correct
35 Correct 3 ms 492 KB Output is correct
36 Correct 282 ms 7784 KB Output is correct
37 Correct 197 ms 6888 KB Output is correct
38 Correct 92 ms 3052 KB Output is correct
39 Correct 203 ms 6632 KB Output is correct
40 Correct 176 ms 7144 KB Output is correct
41 Correct 262 ms 6760 KB Output is correct
42 Correct 131 ms 7272 KB Output is correct
43 Correct 109 ms 7400 KB Output is correct
44 Correct 308 ms 8424 KB Output is correct
45 Correct 295 ms 8296 KB Output is correct
46 Correct 288 ms 8296 KB Output is correct
47 Correct 298 ms 8040 KB Output is correct
48 Correct 268 ms 8552 KB Output is correct
49 Correct 287 ms 8140 KB Output is correct
50 Correct 272 ms 8552 KB Output is correct