oj.uz

Submission #107111

# Submission time Handle Problem Language Result Execution time Memory
107111 2019-04-22T03:37:26 Z tictaccat Circle selection (APIO18_circle_selection) C++14
49 / 100
 3000 ms 263924 KB 
#include <bits/stdc++.h>

using namespace std;

#define int long long

const int MAX = 3e5;

int n;
int gridSize;

vector<pair<int,pair<int,int>>> circles(MAX);
unordered_map<int,vector<int>> grid;
set<pair<int,int>> cur;
vector<int> elim(MAX,-1);

int dist(pair<int,int> p1, pair<int,int> p2) {return (p2.first-p1.first)*(p2.first-p1.first) + (p2.second-p1.second)*(p2.second-p1.second);}
bool intsct(pair<int,pair<int,int>> c1, pair<int,pair<int,int>> c2) {return dist(c1.second,c2.second) <= (c1.first+c2.first)*(c1.first+c2.first);}
int toInt(int xbin, int ybin) {return xbin + ybin * (int)(5e9);}

void makeGrid() {
    grid.clear();
    grid.reserve(count(elim.begin(),elim.end(),-1));
    for (int i = 0; i < n; i++) {
        if (elim[i] != -1) continue;
        auto c = circles[i]; auto p = c.second;
        int xbin = p.first/gridSize; int ybin = p.second/gridSize;
       // cout << toInt(p) << "\n";
        //assert (toInt(p) < numeric_limits<long long>::max());
        if (grid.count(toInt(xbin,ybin)) == 0) grid[toInt(xbin,ybin)] = {i};
        else grid[toInt(xbin,ybin)].push_back(i);
    }
}

main() {

    // cin.tie(0);
    // ios::sync_with_stdio(false);

    cin >> n;

    for (int i = 0; i < n; i++) {
        int x,y,r; cin >> x >> y >> r;
        circles[i] = make_pair(r,make_pair(x,y));
        cur.insert(make_pair(-r,i));
    }
    
    gridSize = 1e18;
    makeGrid();

    while (cur.size() > 0) {
        int i = cur.begin()->second;
        auto top = circles[i]; auto p = top.second; 
        if (top.first < gridSize/2) {
            gridSize = top.first;
            makeGrid();
        }
        int xbinTop = p.first/gridSize; int ybinTop = p.second/gridSize;
        for (int xbin = xbinTop-2; xbin <= xbinTop + 2; xbin++) {
            for (int ybin = ybinTop-2; ybin <= ybinTop + 2; ybin++) {
                for (int j: grid[toInt(xbin,ybin)]) {
                    if (elim[j] == -1 && intsct(top,circles[j])) {
                    //    cout << i+1 << " " << j+1 << "\n";
                        elim[j] = i;
                        assert(cur.count(make_pair(-circles[j].first,j))  == 1);
                        cur.erase(make_pair(-circles[j].first,j)); 
                    }
                }
            }
        }
      ///  break;
    }
    
    for (int i = 0; i < n; i++) {
        cout << elim[i]+1 << " ";
    }

    cout << "\n";

    return 0;
}

Compilation message

circle_selection.cpp:35:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 12288 KB Output is correct
2 Correct 14 ms 12288 KB Output is correct
3 Correct 12 ms 12288 KB Output is correct
4 Correct 14 ms 12288 KB Output is correct
5 Correct 12 ms 12288 KB Output is correct
6 Correct 13 ms 12288 KB Output is correct
7 Correct 14 ms 12288 KB Output is correct
8 Correct 13 ms 12224 KB Output is correct
9 Correct 15 ms 14668 KB Output is correct
10 Correct 13 ms 12288 KB Output is correct
11 Correct 16 ms 14720 KB Output is correct
12 Correct 18 ms 14720 KB Output is correct
13 Correct 16 ms 14796 KB Output is correct
14 Correct 17 ms 14720 KB Output is correct
15 Correct 15 ms 14720 KB Output is correct
16 Correct 18 ms 14720 KB Output is correct
17 Correct 16 ms 12416 KB Output is correct
18 Correct 14 ms 12416 KB Output is correct
19 Correct 25 ms 12876 KB Output is correct
20 Correct 25 ms 12800 KB Output is correct
21 Correct 36 ms 15224 KB Output is correct
22 Correct 47 ms 15736 KB Output is correct
23 Correct 50 ms 15736 KB Output is correct
24 Correct 57 ms 15928 KB Output is correct
25 Correct 46 ms 15736 KB Output is correct
26 Correct 60 ms 15864 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1179 ms 38228 KB Output is correct
2 Correct 1142 ms 35924 KB Output is correct
3 Correct 1180 ms 37668 KB Output is correct
4 Correct 1056 ms 38344 KB Output is correct
5 Correct 1119 ms 35908 KB Output is correct
6 Correct 2738 ms 74644 KB Output is correct
7 Correct 1080 ms 41504 KB Output is correct
8 Correct 1279 ms 42796 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 12288 KB Output is correct
2 Correct 1805 ms 87792 KB Output is correct
3 Execution timed out 3066 ms 263924 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 3064 ms 263204 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 12288 KB Output is correct
2 Correct 14 ms 12288 KB Output is correct
3 Correct 12 ms 12288 KB Output is correct
4 Correct 14 ms 12288 KB Output is correct
5 Correct 12 ms 12288 KB Output is correct
6 Correct 13 ms 12288 KB Output is correct
7 Correct 14 ms 12288 KB Output is correct
8 Correct 13 ms 12224 KB Output is correct
9 Correct 15 ms 14668 KB Output is correct
10 Correct 13 ms 12288 KB Output is correct
11 Correct 16 ms 14720 KB Output is correct
12 Correct 18 ms 14720 KB Output is correct
13 Correct 16 ms 14796 KB Output is correct
14 Correct 17 ms 14720 KB Output is correct
15 Correct 15 ms 14720 KB Output is correct
16 Correct 18 ms 14720 KB Output is correct
17 Correct 16 ms 12416 KB Output is correct
18 Correct 14 ms 12416 KB Output is correct
19 Correct 25 ms 12876 KB Output is correct
20 Correct 25 ms 12800 KB Output is correct
21 Correct 36 ms 15224 KB Output is correct
22 Correct 47 ms 15736 KB Output is correct
23 Correct 50 ms 15736 KB Output is correct
24 Correct 57 ms 15928 KB Output is correct
25 Correct 46 ms 15736 KB Output is correct
26 Correct 60 ms 15864 KB Output is correct
27 Correct 44 ms 15628 KB Output is correct
28 Correct 37 ms 13348 KB Output is correct
29 Correct 35 ms 13348 KB Output is correct
30 Correct 91 ms 19236 KB Output is correct
31 Correct 93 ms 19236 KB Output is correct
32 Correct 108 ms 19408 KB Output is correct
33 Correct 343 ms 20736 KB Output is correct
34 Correct 349 ms 21108 KB Output is correct
35 Correct 390 ms 21572 KB Output is correct
36 Correct 1819 ms 89032 KB Output is correct
37 Correct 1789 ms 88652 KB Output is correct
38 Correct 1904 ms 88544 KB Output is correct
39 Correct 715 ms 36172 KB Output is correct
40 Correct 663 ms 36196 KB Output is correct
41 Correct 671 ms 35960 KB Output is correct
42 Correct 354 ms 27352 KB Output is correct
43 Correct 1470 ms 137416 KB Output is correct
44 Correct 1526 ms 137596 KB Output is correct
45 Correct 1453 ms 137520 KB Output is correct
46 Correct 1599 ms 137588 KB Output is correct
47 Correct 1544 ms 137672 KB Output is correct
48 Correct 1503 ms 137692 KB Output is correct
49 Correct 1692 ms 137740 KB Output is correct
50 Correct 1728 ms 137524 KB Output is correct

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 12288 KB Output is correct
2 Correct 14 ms 12288 KB Output is correct
3 Correct 12 ms 12288 KB Output is correct
4 Correct 14 ms 12288 KB Output is correct
5 Correct 12 ms 12288 KB Output is correct
6 Correct 13 ms 12288 KB Output is correct
7 Correct 14 ms 12288 KB Output is correct
8 Correct 13 ms 12224 KB Output is correct
9 Correct 15 ms 14668 KB Output is correct
10 Correct 13 ms 12288 KB Output is correct
11 Correct 16 ms 14720 KB Output is correct
12 Correct 18 ms 14720 KB Output is correct
13 Correct 16 ms 14796 KB Output is correct
14 Correct 17 ms 14720 KB Output is correct
15 Correct 15 ms 14720 KB Output is correct
16 Correct 18 ms 14720 KB Output is correct
17 Correct 16 ms 12416 KB Output is correct
18 Correct 14 ms 12416 KB Output is correct
19 Correct 25 ms 12876 KB Output is correct
20 Correct 25 ms 12800 KB Output is correct
21 Correct 36 ms 15224 KB Output is correct
22 Correct 47 ms 15736 KB Output is correct
23 Correct 50 ms 15736 KB Output is correct
24 Correct 57 ms 15928 KB Output is correct
25 Correct 46 ms 15736 KB Output is correct
26 Correct 60 ms 15864 KB Output is correct
27 Correct 1179 ms 38228 KB Output is correct
28 Correct 1142 ms 35924 KB Output is correct
29 Correct 1180 ms 37668 KB Output is correct
30 Correct 1056 ms 38344 KB Output is correct
31 Correct 1119 ms 35908 KB Output is correct
32 Correct 2738 ms 74644 KB Output is correct
33 Correct 1080 ms 41504 KB Output is correct
34 Correct 1279 ms 42796 KB Output is correct
35 Correct 13 ms 12288 KB Output is correct
36 Correct 1805 ms 87792 KB Output is correct
37 Execution timed out 3066 ms 263924 KB Time limit exceeded
38 Halted 0 ms 0 KB -