oj.uz

Submission #939586

# Submission time Handle Problem Language Result Execution time Memory
939586 2024-03-06T14:35:18 Z green_gold_dog Circle selection (APIO18_circle_selection) C++17
37 / 100
 3000 ms 501164 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;
        ll can;
        segment_tree(ll n) {
                size = 1;
                while (size < n) {
                        size *= 2;
                }
                tree.resize(size * 2);
        }
        void insert(ll x, ll y, ll id) {
                can = 21;
                insert(1, 0, size, x, y, id);
                assert(can >= 0);
        }
        void insert(ll v, ll l, ll r, ll x, ll y, ll id) {
                if (x < l || r <= x) {
                        return;
                }
                can--;
                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:174:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  174 |                 freopen("", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~
circle_selection.cpp:175:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  175 |                 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 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 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 600 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 600 KB Output is correct
11 Correct 1 ms 600 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 600 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 4 ms 1884 KB Output is correct
17 Correct 4 ms 1884 KB Output is correct
18 Correct 5 ms 1884 KB Output is correct
19 Correct 30 ms 8892 KB Output is correct
20 Correct 25 ms 8660 KB Output is correct
21 Correct 25 ms 8632 KB Output is correct
22 Correct 29 ms 8512 KB Output is correct
23 Correct 31 ms 8532 KB Output is correct
24 Correct 30 ms 8376 KB Output is correct
25 Correct 28 ms 8544 KB Output is correct
26 Correct 30 ms 8376 KB Output is correct

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3056 ms 501164 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 2370 ms 212308 KB Output is correct
3 Execution timed out 3054 ms 467004 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 3046 ms 461984 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 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 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 600 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 600 KB Output is correct
11 Correct 1 ms 600 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 600 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 4 ms 1884 KB Output is correct
17 Correct 4 ms 1884 KB Output is correct
18 Correct 5 ms 1884 KB Output is correct
19 Correct 30 ms 8892 KB Output is correct
20 Correct 25 ms 8660 KB Output is correct
21 Correct 25 ms 8632 KB Output is correct
22 Correct 29 ms 8512 KB Output is correct
23 Correct 31 ms 8532 KB Output is correct
24 Correct 30 ms 8376 KB Output is correct
25 Correct 28 ms 8544 KB Output is correct
26 Correct 30 ms 8376 KB Output is correct
27 Correct 63 ms 17428 KB Output is correct
28 Correct 61 ms 17432 KB Output is correct
29 Correct 62 ms 17432 KB Output is correct
30 Correct 82 ms 17236 KB Output is correct
31 Correct 74 ms 17176 KB Output is correct
32 Correct 72 ms 17172 KB Output is correct
33 Correct 1702 ms 213984 KB Output is correct
34 Correct 1611 ms 214284 KB Output is correct
35 Correct 1769 ms 214008 KB Output is correct
36 Correct 2231 ms 212384 KB Output is correct
37 Correct 2400 ms 212604 KB Output is correct
38 Correct 2353 ms 212244 KB Output is correct
39 Correct 2322 ms 75804 KB Output is correct
40 Correct 2345 ms 75780 KB Output is correct
41 Correct 2132 ms 75984 KB Output is correct
42 Correct 1256 ms 87140 KB Output is correct
43 Correct 1433 ms 212500 KB Output is correct
44 Correct 1402 ms 212356 KB Output is correct
45 Correct 1429 ms 212260 KB Output is correct
46 Correct 1381 ms 212244 KB Output is correct
47 Correct 1375 ms 212496 KB Output is correct
48 Correct 1397 ms 212256 KB Output is correct
49 Correct 1418 ms 212396 KB Output is correct
50 Correct 1381 ms 212264 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 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 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 600 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 600 KB Output is correct
11 Correct 1 ms 600 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 600 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 4 ms 1884 KB Output is correct
17 Correct 4 ms 1884 KB Output is correct
18 Correct 5 ms 1884 KB Output is correct
19 Correct 30 ms 8892 KB Output is correct
20 Correct 25 ms 8660 KB Output is correct
21 Correct 25 ms 8632 KB Output is correct
22 Correct 29 ms 8512 KB Output is correct
23 Correct 31 ms 8532 KB Output is correct
24 Correct 30 ms 8376 KB Output is correct
25 Correct 28 ms 8544 KB Output is correct
26 Correct 30 ms 8376 KB Output is correct
27 Execution timed out 3056 ms 501164 KB Time limit exceeded
28 Halted 0 ms 0 KB -