oj.uz

Submission #328596

# Submission time Handle Problem Language Result Execution time Memory
328596 2020-11-17T09:42:23 Z Falcon trapezoid (balkan11_trapezoid) C++17
100 / 100
 194 ms 14444 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))
#define pb push_back

#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 = 1; \
                            dbg::dout << __func__ << ":" << __LINE__ << "  " \
                                << #x << " = " << x << endl; \
                            dbg::light = 0; }
#else
#define debug(x...)         42
#define light_debug(x)      42
#endif


using ll = long long;
using pii = pair<int, int>;
using vi = vector<int>;

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; }

constexpr int MOD{30013};

class segtree {
    using node = pair<int, int>;

    int n;
    vector<node> seg;

private:
    static node comb(const node& a, const node& b) {
        if(a.first == b.first)
            return {a.first, (a.second + b.second) % MOD};
        return a > b ? a : b;
    }

public:
    segtree(int n_) : n{n_}, seg(n << 1) {
        rep(i, n) seg[i + n] = {0, !i};
        rrep(i, n) seg[i] = comb(seg[i << 1], seg[i << 1 | 1]);
    }

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

    node query(int y) const {
        node res = {0, 0};
        for(int s = n, e = y + n; s < e; s >>= 1, e >>= 1) {
            if(s & 1) res = comb(res, seg[s++]);
            if(e & 1) res = comb(res, seg[--e]);
        }
        return res;
    }
};

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

    struct trapezoid {
        int x1, y1, x2, y2, i;
    };
    
    int n; cin >> n;
    vector<trapezoid> trapezoids(n); 
    for(auto& t : trapezoids)
        cin >> t.x1 >> t.x2 >> t.y1 >> t.y2; 

    int m{};
    {   // Compress y co-ordinates.
        map<int, int> y_vals;
        int i{};
        for(auto& t : trapezoids)
            y_vals[t.y1], y_vals[t.y2], t.i = i++;
        i = 0;
        traverse(y_vals, it) it->second = ++i;
        for(auto& t : trapezoids)
            t.y1 = y_vals[t.y1], t.y2 = y_vals[t.y2];
        m = int(y_vals.size() + 1);
    }

    vector<trapezoid> r_trapezoids{trapezoids};
    sort(all(trapezoids), [&](const trapezoid& a, const trapezoid& b) { return a.x1 < b.x1; });
    sort(all(r_trapezoids), [&](const trapezoid& a, const trapezoid& b) { return a.x2 < b.x2; });

    segtree seg(m);
    vector<pair<int, int>> res(n);

    auto s = r_trapezoids.begin();
    for(auto& t : trapezoids) {
        for(; s != r_trapezoids.end() && s->x2 < t.x1; ++s)
            seg.update(s->y2, res[s->i]);
        res[t.i] = seg.query(t.y1);
        ++res[t.i].first;
        debug(t.i, res[t.i]);
    }

    for(; s != r_trapezoids.end(); ++s)
        seg.update(s->y2, res[s->i]);

    auto ans = seg.query(m);
    cout << ans.first << ' ' << ans.second << '\n';


    #ifdef DEBUG
    dbg::dout << "\nExecution time: " << clock() << "ms\n";
    #endif

    return 0;
}

Compilation message

trapezoid.cpp: In function 'int main()':
trapezoid.cpp:32:29: warning: statement has no effect [-Wunused-value]
   32 | #define debug(x...)         42
      |                             ^~
trapezoid.cpp:128:9: note: in expansion of macro 'debug'
  128 |         debug(t.i, res[t.i]);
      |         ^~~~~

Subtask #1
100.0 / 100.0

# 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 2 ms 492 KB Output is correct
5 Correct 3 ms 768 KB Output is correct
6 Correct 5 ms 768 KB Output is correct
7 Correct 6 ms 1004 KB Output is correct
8 Correct 8 ms 1004 KB Output is correct
9 Correct 17 ms 1644 KB Output is correct
10 Correct 30 ms 3180 KB Output is correct
11 Correct 40 ms 3820 KB Output is correct
12 Correct 94 ms 7404 KB Output is correct
13 Correct 109 ms 8684 KB Output is correct
14 Correct 125 ms 10220 KB Output is correct
15 Correct 151 ms 10860 KB Output is correct
16 Correct 169 ms 11648 KB Output is correct
17 Correct 169 ms 12268 KB Output is correct
18 Correct 162 ms 13056 KB Output is correct
19 Correct 163 ms 13676 KB Output is correct
20 Correct 194 ms 14444 KB Output is correct