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답안 #939579

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
939579 2024-03-06T14:28:16 Z green_gold_dog 원 고르기 (APIO18_circle_selection) C++17
37 / 100
 2410 ms 424068 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 = 20;
        segment_tree(ll n) {
                size = 1;
                while (size < n) {
                        size *= 2;
                }
                tree.resize(size * 2);
        }
        void insert(ll x, ll y, ll id) {
                can = 20;
                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

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 468 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 604 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 600 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 6 ms 2320 KB Output is correct
17 Correct 5 ms 1880 KB Output is correct
18 Correct 6 ms 1884 KB Output is correct
19 Correct 34 ms 8796 KB Output is correct
20 Correct 25 ms 8636 KB Output is correct
21 Correct 26 ms 8636 KB Output is correct
22 Correct 29 ms 8636 KB Output is correct
23 Correct 31 ms 8632 KB Output is correct
24 Correct 30 ms 8696 KB Output is correct
25 Correct 36 ms 8636 KB Output is correct
26 Correct 29 ms 8692 KB Output is correct

Subtask #2
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 993 ms 424068 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 2380 ms 212088 KB Output is correct
3 Runtime error 883 ms 423888 KB Execution killed with signal 6
4 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 744 ms 423740 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #5
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 468 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 604 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 600 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 6 ms 2320 KB Output is correct
17 Correct 5 ms 1880 KB Output is correct
18 Correct 6 ms 1884 KB Output is correct
19 Correct 34 ms 8796 KB Output is correct
20 Correct 25 ms 8636 KB Output is correct
21 Correct 26 ms 8636 KB Output is correct
22 Correct 29 ms 8636 KB Output is correct
23 Correct 31 ms 8632 KB Output is correct
24 Correct 30 ms 8696 KB Output is correct
25 Correct 36 ms 8636 KB Output is correct
26 Correct 29 ms 8692 KB Output is correct
27 Correct 59 ms 17336 KB Output is correct
28 Correct 64 ms 17444 KB Output is correct
29 Correct 62 ms 17432 KB Output is correct
30 Correct 82 ms 17172 KB Output is correct
31 Correct 94 ms 17172 KB Output is correct
32 Correct 74 ms 17244 KB Output is correct
33 Correct 1719 ms 214064 KB Output is correct
34 Correct 1655 ms 214316 KB Output is correct
35 Correct 1717 ms 213940 KB Output is correct
36 Correct 2198 ms 212252 KB Output is correct
37 Correct 2309 ms 212464 KB Output is correct
38 Correct 2355 ms 212240 KB Output is correct
39 Correct 2410 ms 75608 KB Output is correct
40 Correct 2355 ms 75864 KB Output is correct
41 Correct 2318 ms 75788 KB Output is correct
42 Correct 1221 ms 86892 KB Output is correct
43 Correct 1375 ms 212244 KB Output is correct
44 Correct 1499 ms 212540 KB Output is correct
45 Correct 1407 ms 212460 KB Output is correct
46 Correct 1417 ms 212448 KB Output is correct
47 Correct 1412 ms 212280 KB Output is correct
48 Correct 1378 ms 212264 KB Output is correct
49 Correct 1393 ms 212324 KB Output is correct
50 Correct 1384 ms 212256 KB Output is correct

Subtask #6
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 468 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 604 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 600 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 6 ms 2320 KB Output is correct
17 Correct 5 ms 1880 KB Output is correct
18 Correct 6 ms 1884 KB Output is correct
19 Correct 34 ms 8796 KB Output is correct
20 Correct 25 ms 8636 KB Output is correct
21 Correct 26 ms 8636 KB Output is correct
22 Correct 29 ms 8636 KB Output is correct
23 Correct 31 ms 8632 KB Output is correct
24 Correct 30 ms 8696 KB Output is correct
25 Correct 36 ms 8636 KB Output is correct
26 Correct 29 ms 8692 KB Output is correct
27 Runtime error 993 ms 424068 KB Execution killed with signal 6
28 Halted 0 ms 0 KB -