oj.uz

답안 #331325

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
331325 2020-11-28T02:51:17 Z Falcon Matryoshka (JOI16_matryoshka) C++17
100 / 100
 347 ms 17112 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{2'00'000};

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 X, Y;

    for(const auto& [x, y] : v) X.insert(x), Y.insert(y);
    X.apply(), Y.apply();
    for(auto& [x, y] : v) x = X.get_rank(x), 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;
        A = X.get_rank(A), 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) {
        debug(q.i, q.A, q.B);
        for(; p != v.end() && p->first >= q.A; ++p) {
            debug(*p, 1 + seg.query(p->second, MAXV));
            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;
}

Compilation message

matryoshka.cpp: In function 'int main()':
matryoshka.cpp:35:29: warning: statement has no effect [-Wunused-value]
   35 | #define debug(x...)         42
      |                             ^~
matryoshka.cpp:121:9: note: in expansion of macro 'debug'
  121 |         debug(q.i, q.A, q.B);
      |         ^~~~~
matryoshka.cpp:35:29: warning: statement has no effect [-Wunused-value]
   35 | #define debug(x...)         42
      |                             ^~
matryoshka.cpp:123:13: note: in expansion of macro 'debug'
  123 |             debug(*p, 1 + seg.query(p->second, MAXV));
      |             ^~~~~

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 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 384 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

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 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 384 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 376 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 492 KB Output is correct

Subtask #3
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 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 384 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 376 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 492 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 2 ms 492 KB Output is correct
23 Correct 4 ms 620 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 4 ms 620 KB Output is correct
28 Correct 3 ms 492 KB Output is correct
29 Correct 3 ms 512 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

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 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 384 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 376 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 492 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 2 ms 492 KB Output is correct
23 Correct 4 ms 620 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 4 ms 620 KB Output is correct
28 Correct 3 ms 492 KB Output is correct
29 Correct 3 ms 512 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 330 ms 13784 KB Output is correct
37 Correct 241 ms 12120 KB Output is correct
38 Correct 108 ms 5984 KB Output is correct
39 Correct 198 ms 10584 KB Output is correct
40 Correct 196 ms 11148 KB Output is correct
41 Correct 274 ms 12120 KB Output is correct
42 Correct 138 ms 9688 KB Output is correct
43 Correct 116 ms 9816 KB Output is correct
44 Correct 340 ms 16856 KB Output is correct
45 Correct 347 ms 16856 KB Output is correct
46 Correct 347 ms 16856 KB Output is correct
47 Correct 325 ms 16684 KB Output is correct
48 Correct 321 ms 17052 KB Output is correct
49 Correct 333 ms 16728 KB Output is correct
50 Correct 327 ms 17112 KB Output is correct