oj.uz

Submission #939574

# Submission time Handle Problem Language Result Execution time Memory
939574 2024-03-06T14:23:51 Z green_gold_dog Circle selection (APIO18_circle_selection) C++17
37 / 100
 3000 ms 475456 KB 
//#pragma GCC optimize("Ofast")
//#pragma GCC target("avx,avx2,sse,sse2,sse3,ssse3,sse4,abm,popcnt,mmx")
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef double db;
typedef long double ldb;
typedef complex<double> cd;

constexpr ll INF64 = 9'000'000'000'000'000'000, INF32 = 2'000'000'000, MOD = 1'000'000'007;
constexpr db PI = acos(-1);
constexpr bool IS_FILE = false, IS_TEST_CASES = false;

random_device rd;
mt19937 rnd32(rd());
mt19937_64 rnd64(rd());

template<typename T>
bool assign_max(T& a, T b) {
        if (b > a) {
                a = b;
                return true;
        }
        return false;
}

template<typename T>
bool assign_min(T& a, T b) {
        if (b < a) {
                a = b;
                return true;
        }
        return false;
}

template<typename T>
T square(T a) {
        return a * a;
}

template<>
struct std::hash<pair<ll, ll>> {
        ll operator() (pair<ll, ll> p) const {
                return ((__int128)p.first * MOD + p.second) % INF64;
        }
};

struct circle {
        ll x, y, r, id;
        circle(ll x = 0, ll y = 0, ll r = 0, ll id = 0): x(x), y(y), r(r), id(id) {}
        bool operator<(const circle c2) const {
                return c2.r < r;
        }
        bool check(circle c2) {
                return square(x - c2.x) + square(y - c2.y) <= square(r + c2.r);
        }
};

struct segment_tree {
        vector<set<pair<ll, ll>>> tree;
        ll size;
        segment_tree(ll n) {
                size = 1;
                while (size < n) {
                        size *= 2;
                }
                tree.resize(size * 2);
        }
        void insert(ll x, ll y, ll id) {
                insert(1, 0, size, x, y, id);
        }
        void insert(ll v, ll l, ll r, ll x, ll y, ll id) {
                if (x < l || r <= x) {
                        return;
                }
                tree[v].insert(make_pair(y, id));
                if (r - l == 1) {
                        return;
                }
                ll mid = (l + r) / 2;
                insert(v * 2, l, mid, x, y, id);
                insert(v * 2 + 1, mid, r, x, y, id);
        }
        void erase(ll x, ll y, ll id) {
                erase(1, 0, size, x, y, id);
        }
        void erase(ll v, ll l, ll r, ll x, ll y, ll id) {
                if (x < l || r <= x) {
                        return;
                }
                tree[v].erase(make_pair(y, id));
                if (r - l == 1) {
                        return;
                }
                ll mid = (l + r) / 2;
                erase(v * 2, l, mid, x, y, id);
                erase(v * 2 + 1, mid, r, x, y, id);
        }
        void get(ll l, ll r, ll nl, ll nr, vector<ll>& ans) {
                get(1, 0, size, l, r + 1, nl, nr, ans);
        }
        void get(ll v, ll l, ll r, ll ql, ll qr, ll nl, ll nr, vector<ll>& ans) {
                if (ql <= l && r <= qr) {
                        auto it = tree[v].lower_bound(make_pair(nl, 0));
                        while (it != tree[v].end() && it->first <= nr) {
                                ans.emplace_back(it->second);
                                it++;
                        }
                        return;
                }
                if (qr <= l || r <= ql) {
                        return;
                }
                ll mid = (l + r) / 2;
                get(v * 2, l, mid, ql, qr, nl, nr, ans);
                get(v * 2 + 1, mid, r, ql, qr, nl, nr, ans);
        }
};

void solve() {
        ll n;
        cin >> n;
        vector<circle> all(n);
        for (ll i = 0; i < n; i++) {
                cin >> all[i].x >> all[i].y >> all[i].r;
                all[i].id = i;
        }
        stable_sort(all.begin(), all.end());
        vector<ll> ans(n, -1);
        set<ll> allx;
        for (ll i = 0; i < n; i++) {
                allx.insert(all[i].x - all[i].r * 2);
                allx.insert(all[i].x);
                allx.insert(all[i].x + all[i].r * 2);
        }
        map<ll, ll> zip;
        ll lst = 0;
        for (auto i : allx) {
                zip[i] = lst;
                lst++;
        }
        segment_tree st(lst);
        for (ll i = 0; i < n; i++) {
                st.insert(zip[all[i].x], all[i].y, i);
        }
        for (ll i = 0; i < n; i++) {
                if (ans[all[i].id] == -1) {
                        vector<ll> na;
                        st.get(zip[all[i].x - all[i].r * 2], zip[all[i].x + all[i].r * 2], all[i].y - all[i].r * 2, all[i].y + all[i].r * 2, na);
                        for (auto j : na) {
                                if (ans[all[j].id] == -1) {
                                        if (all[i].check(all[j])) {
                                                ans[all[j].id] = all[i].id;
                                                st.erase(zip[all[j].x], all[j].y, j);
                                        }
                                }
                        }
                }
        }
        for (auto i : ans) {
                cout << i + 1 << ' ';
        }
        cout << '\n';
}

int main() {
        if (IS_FILE) {
                freopen("", "r", stdin);
                freopen("", "w", stdout);
        }
        ios_base::sync_with_stdio(false);
        cin.tie(0);
        cout.tie(0);
        ll t = 1;
        if (IS_TEST_CASES) {
                cin >> t;
        }
        for (ll i = 0; i < t; i++) {
                solve();
        }
}

Compilation message

circle_selection.cpp: In function 'int main()':
circle_selection.cpp:170:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  170 |                 freopen("", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~
circle_selection.cpp:171:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  171 |                 freopen("", "w", stdout);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 464 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 5 ms 1884 KB Output is correct
17 Correct 4 ms 1884 KB Output is correct
18 Correct 4 ms 1880 KB Output is correct
19 Correct 26 ms 8636 KB Output is correct
20 Correct 25 ms 8628 KB Output is correct
21 Correct 25 ms 8628 KB Output is correct
22 Correct 29 ms 8636 KB Output is correct
23 Correct 31 ms 8632 KB Output is correct
24 Correct 28 ms 8696 KB Output is correct
25 Correct 32 ms 8780 KB Output is correct
26 Correct 29 ms 8832 KB Output is correct

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3050 ms 472240 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 2420 ms 215108 KB Output is correct
3 Execution timed out 3025 ms 459580 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3042 ms 475456 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 464 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 5 ms 1884 KB Output is correct
17 Correct 4 ms 1884 KB Output is correct
18 Correct 4 ms 1880 KB Output is correct
19 Correct 26 ms 8636 KB Output is correct
20 Correct 25 ms 8628 KB Output is correct
21 Correct 25 ms 8628 KB Output is correct
22 Correct 29 ms 8636 KB Output is correct
23 Correct 31 ms 8632 KB Output is correct
24 Correct 28 ms 8696 KB Output is correct
25 Correct 32 ms 8780 KB Output is correct
26 Correct 29 ms 8832 KB Output is correct
27 Correct 65 ms 17688 KB Output is correct
28 Correct 65 ms 17752 KB Output is correct
29 Correct 65 ms 17588 KB Output is correct
30 Correct 75 ms 17432 KB Output is correct
31 Correct 74 ms 17428 KB Output is correct
32 Correct 74 ms 17532 KB Output is correct
33 Correct 1683 ms 217548 KB Output is correct
34 Correct 1664 ms 217156 KB Output is correct
35 Correct 1724 ms 217224 KB Output is correct
36 Correct 2285 ms 214912 KB Output is correct
37 Correct 2373 ms 215060 KB Output is correct
38 Correct 2391 ms 214976 KB Output is correct
39 Correct 2336 ms 77228 KB Output is correct
40 Correct 2539 ms 76888 KB Output is correct
41 Correct 2173 ms 77332 KB Output is correct
42 Correct 1211 ms 88428 KB Output is correct
43 Correct 1462 ms 215224 KB Output is correct
44 Correct 1569 ms 214808 KB Output is correct
45 Correct 1491 ms 215052 KB Output is correct
46 Correct 1530 ms 214868 KB Output is correct
47 Correct 1544 ms 214888 KB Output is correct
48 Correct 1507 ms 214888 KB Output is correct
49 Correct 1561 ms 214876 KB Output is correct
50 Correct 1466 ms 214724 KB Output is correct

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 464 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 5 ms 1884 KB Output is correct
17 Correct 4 ms 1884 KB Output is correct
18 Correct 4 ms 1880 KB Output is correct
19 Correct 26 ms 8636 KB Output is correct
20 Correct 25 ms 8628 KB Output is correct
21 Correct 25 ms 8628 KB Output is correct
22 Correct 29 ms 8636 KB Output is correct
23 Correct 31 ms 8632 KB Output is correct
24 Correct 28 ms 8696 KB Output is correct
25 Correct 32 ms 8780 KB Output is correct
26 Correct 29 ms 8832 KB Output is correct
27 Execution timed out 3050 ms 472240 KB Time limit exceeded
28 Halted 0 ms 0 KB -