oj.uz

Submission #160531

# Submission time Handle Problem Language Result Execution time Memory
160531 2019-10-28T10:45:38 Z Minnakhmetov Circle selection (APIO18_circle_selection) C++14
7 / 100
 2842 ms 47428 KB 
#include <bits/stdc++.h>
    
#define ll long long
#define all(aaa) aaa.begin(), aaa.end()
  
using namespace std;

struct C {
    ll x, y, r, i;
};

const int N = 3e5 + 5, INF = 1e9;
map<pair<ll, ll>, vector<int>> mp;
bool used[N];
C cir[N];
int n;
int ans[N];

bool check(C a, C b) {
    return (a.x - b.x) * (a.x - b.x) + (a.y - b.y) * (a.y - b.y) <= 
        (a.r + b.r) * (a.r + b.r);
}

void build(int r) {
    mp.clear();
    for (int i = 0; i < n; i++) {
        if (!used[i]) {
            mp[{cir[i].x / r, cir[i].y / r}].push_back(i);
        }
    }
}
 
signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);

    cin >> n;

    int cur = 0;

    for (int i = 0; i < n; i++) {
        cin >> cir[i].x >> cir[i].y >> cir[i].r;
        cir[i].x += INF;
        cir[i].y += INF;
        cir[i].i = i;
    }

    sort(cir, cir + n, [](const C &a, const C &b) {
        return a.r > b.r;
    });

    cur = cir[0].r;

    build(cur);

    for (int i = 0; i < n; i++) {
        if (!used[i]) {
            // cout << cir[i].x << " " << cir[i].y << " " << cir[i].r << "\n";

            if (cir[i].r * 2 < cur) {
                cur = cir[i].r;
                build(cur);
            }

            int x = cir[i].x / cur,
                y = cir[i].y / cur;

            for (int j = x - 3; j <= x + 3; j++) {
                for (int k = y - 3; k <= y + 3; k++) {
                    if (mp.count({j, k})) {
                        vector<int> &v = mp[{j, k}];
                        for (int h = 0; h < v.size(); h++) {
                            if (check(cir[i], cir[v[h]])) {
                                ans[cir[v[h]].i] = cir[i].i;
                                used[v[h]] = 1;
                                swap(v.back(), v[h]);
                                v.pop_back();
                                h--;
                            }
                        }
                    }
                    
                }
            }
        }
    }

    for (int i = 0; i < n; i++) {
        cout << ans[i] + 1 << " ";
    }
 
    return 0;
}

Compilation message

circle_selection.cpp: In function 'int main()':
circle_selection.cpp:72:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                         for (int h = 0; h < v.size(); h++) {
                                         ~~^~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 380 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 3 ms 376 KB Output is correct
15 Correct 2 ms 392 KB Output is correct
16 Correct 3 ms 400 KB Output is correct
17 Correct 3 ms 376 KB Output is correct
18 Correct 3 ms 376 KB Output is correct
19 Correct 5 ms 760 KB Output is correct
20 Correct 6 ms 764 KB Output is correct
21 Correct 5 ms 764 KB Output is correct
22 Correct 23 ms 1272 KB Output is correct
23 Correct 24 ms 1300 KB Output is correct
24 Correct 21 ms 1272 KB Output is correct
25 Correct 20 ms 1272 KB Output is correct
26 Correct 21 ms 1296 KB Output is correct

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 205 ms 14784 KB Output is correct
2 Correct 200 ms 14828 KB Output is correct
3 Correct 204 ms 15544 KB Output is correct
4 Correct 195 ms 15020 KB Output is correct
5 Incorrect 262 ms 15380 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 777 ms 16640 KB Output is correct
3 Correct 2780 ms 47264 KB Output is correct
4 Correct 2842 ms 47224 KB Output is correct
5 Incorrect 2658 ms 40808 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 2548 ms 47428 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 380 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 3 ms 376 KB Output is correct
15 Correct 2 ms 392 KB Output is correct
16 Correct 3 ms 400 KB Output is correct
17 Correct 3 ms 376 KB Output is correct
18 Correct 3 ms 376 KB Output is correct
19 Correct 5 ms 760 KB Output is correct
20 Correct 6 ms 764 KB Output is correct
21 Correct 5 ms 764 KB Output is correct
22 Correct 23 ms 1272 KB Output is correct
23 Correct 24 ms 1300 KB Output is correct
24 Correct 21 ms 1272 KB Output is correct
25 Correct 20 ms 1272 KB Output is correct
26 Correct 21 ms 1296 KB Output is correct
27 Correct 9 ms 1144 KB Output is correct
28 Correct 9 ms 1144 KB Output is correct
29 Correct 9 ms 1144 KB Output is correct
30 Correct 47 ms 2140 KB Output is correct
31 Correct 42 ms 2168 KB Output is correct
32 Correct 42 ms 2168 KB Output is correct
33 Correct 78 ms 6276 KB Output is correct
34 Correct 73 ms 6260 KB Output is correct
35 Correct 77 ms 5968 KB Output is correct
36 Correct 648 ms 16640 KB Output is correct
37 Correct 644 ms 16760 KB Output is correct
38 Correct 678 ms 16772 KB Output is correct
39 Incorrect 595 ms 15020 KB Output isn't correct
40 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 380 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 3 ms 376 KB Output is correct
15 Correct 2 ms 392 KB Output is correct
16 Correct 3 ms 400 KB Output is correct
17 Correct 3 ms 376 KB Output is correct
18 Correct 3 ms 376 KB Output is correct
19 Correct 5 ms 760 KB Output is correct
20 Correct 6 ms 764 KB Output is correct
21 Correct 5 ms 764 KB Output is correct
22 Correct 23 ms 1272 KB Output is correct
23 Correct 24 ms 1300 KB Output is correct
24 Correct 21 ms 1272 KB Output is correct
25 Correct 20 ms 1272 KB Output is correct
26 Correct 21 ms 1296 KB Output is correct
27 Correct 205 ms 14784 KB Output is correct
28 Correct 200 ms 14828 KB Output is correct
29 Correct 204 ms 15544 KB Output is correct
30 Correct 195 ms 15020 KB Output is correct
31 Incorrect 262 ms 15380 KB Output isn't correct
32 Halted 0 ms 0 KB -