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Submission #791394

# Submission time Handle Problem Language Result Execution time Memory
791394 2023-07-24T05:43:33 Z xetrk Circle selection (APIO18_circle_selection) C++17
7 / 100
 3000 ms 181424 KB 
#pragma warning(disable:4996)

#include<bits/stdc++.h>
#include<unordered_set>
#include<unordered_map>
using namespace std;


typedef long long ll;
typedef long double ld;

int n;

vector<vector<ll>> circle;

vector<pair<ll, int>> sortRadius;
//set<pair<ll,int>> sortX, sortY;

//int skipX[300100], skipY[300100];
//int xIdx[300100], yIdx[300100];

set<vector<ll>> circleSet;


int ans[301000];

inline ll GetDist(ll x1, ll y1, ll x2, ll y2)
{
    // 아 좌표값 마이너스도 들어오네
    ll xx = max(x1, x2) - min(x1, x2);
    ll yy = max(y1, y2) - min(y1, y2);
    return (xx * xx) + (yy * yy);
}



bool comp(const pair<ll, int>& a, const pair<ll, int>& b)
{
    if (a.first == b.first)
        return a.second < b.second;
    return a.first < b.first;
}

bool compSort(const pair<ll, int>& a, const pair<ll, int>& b)
{
    if (a.first == b.first)
        return a.second < b.second;

    return a.first > b.first;
}

inline ll Pos2ll(ll x, ll y)
{
    return y * 3000000001L + x;
}

unordered_map<ll, multiset<vector<ll>>> SetGrid(ll gridSize)
{
    unordered_map<ll, multiset<vector<ll>>> myGrid;
    ll x, y, r, i, posll;
    for (auto c = circleSet.begin(); c != circleSet.end(); c++)
    {
        x = (*c)[0], y = (*c)[1], r = (*c)[2], i = (*c)[3];
        posll = Pos2ll(x / gridSize, y / gridSize);
        auto iter = myGrid.insert({ posll ,{{x,y,r,i}} });
        if (iter.second == false)
        {
            //auto iter = myGrid.find(posll);
            iter.first->second.insert({ x,y,r,i });
        }
    }

    return myGrid;

}

int main()
{

    ll x, y, r, r2;
    int i;
    scanf("%d", &n);

    for (int i = 0; i < n; i++)
    {
        scanf("%lld %lld %lld", &x, &y, &r);
        //x = 1, y = 1, r = 3;
        //좌표는 양수로만 그래야 그리드계산 편함
        //1000000000
        x += 1000000000L;
        y += 1000000000L;
        //1000000000
        circle.push_back({ x,y,r });
        circleSet.insert({ x,y,r,i });
        sortRadius.push_back({ r,i });
    }

    sort(sortRadius.begin(), sortRadius.end(), compSort);
    //sort(sortX.begin(), sortX.end());
    //sort(sortY.begin(), sortY.end());


    int cur, curcmp;
    //int xMin, xMax, yMin, yMax;
    ll rr;

    fill(ans, ans + n + 2, -1);

    ll gridSize = sortRadius[0].first * 2LL;
    unordered_map<ll, multiset<vector<ll>>> gridAll = SetGrid(gridSize);

    ll gridX, gridY;
    ll nx, ny, nr, gridll, curll;
    int ni;

    multiset<vector<ll>> curGrids;

    int ttt = n / 1000 + 1;

    for (int curDelete = 0; curDelete < n; curDelete++)
    {
        cur = sortRadius[curDelete].second;
        if (ans[cur] != -1)
            continue;

        /*
        if (gridSize / 2 >= sortRadius[curDelete].first * 2LL && gridSize / 2 >= 1)
        {
            gridSize /= 2;
            gridAll = SetGrid(gridSize);
        }*/

        if (curDelete % ttt == 0)
        {
            gridSize = sortRadius[curDelete].first * 2LL;
            gridAll = SetGrid(gridSize);
        }

        ans[cur] = cur;

        x = circle[cur][0], y = circle[cur][1], r = circle[cur][2];

        gridX = x / gridSize, gridY = y / gridSize;
        circleSet.erase({ x,y,r,cur });
        gridll = Pos2ll(gridX, gridY);

        (*gridAll.find(gridll)).second.erase({ x,y,r,cur });

        for (int curGridX = gridX - 1; curGridX <= gridX + 1; curGridX++)
        {
            for (int curGridY = gridY - 1; curGridY <= gridY + 1; curGridY++)
            {
                curll = Pos2ll(curGridX, curGridY);
                auto ggg = gridAll.find(curll);
                if (ggg == gridAll.end())
                    continue;
                curGrids = (*ggg).second;
                vector<multiset<vector<ll>>::iterator> eraseItems;
                auto nextCircle = curGrids.begin();
                multiset<vector<ll>>::iterator curCircle;
                while (nextCircle != curGrids.end())
                {
                    curCircle = nextCircle;
                    nextCircle++;
                    nx = (*curCircle)[0], ny = (*curCircle)[1], nr = (*curCircle)[2], ni = (*curCircle)[3];
                    if (ans[ni] != -1)
                        continue;
                    if (GetDist(x, y, nx, ny) <= (r + nr) * (r + nr))
                    {
                        ans[ni] = cur;
                        //eraseItems.push_back(curCircle);
                        curGrids.erase(curCircle);

                        circleSet.erase({ nx,ny,nr,ni });//log n 최대 n번
                    }
                }

                //for (auto eraseIt : eraseItems)
                   // curGrids.erase(eraseIt);//log n 최대 n*32 번

            }
        }

    }

    for (int i = 0; i < n; i++)
        printf("%d ", ans[i] + 1);

    return 0;
}

Compilation message

circle_selection.cpp:1: warning: ignoring '#pragma warning ' [-Wunknown-pragmas]
    1 | #pragma warning(disable:4996)
      | 
circle_selection.cpp: In function 'int main()':
circle_selection.cpp:80:17: warning: unused variable 'r2' [-Wunused-variable]
   80 |     ll x, y, r, r2;
      |                 ^~
circle_selection.cpp:81:9: warning: unused variable 'i' [-Wunused-variable]
   81 |     int i;
      |         ^
circle_selection.cpp:103:14: warning: unused variable 'curcmp' [-Wunused-variable]
  103 |     int cur, curcmp;
      |              ^~~~~~
circle_selection.cpp:105:8: warning: unused variable 'rr' [-Wunused-variable]
  105 |     ll rr;
      |        ^~
circle_selection.cpp:82:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   82 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
circle_selection.cpp:86:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   86 |         scanf("%lld %lld %lld", &x, &y, &r);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 0 ms 304 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 308 KB Output is correct
6 Correct 1 ms 304 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 2 ms 340 KB Output is correct
14 Correct 2 ms 368 KB Output is correct
15 Correct 2 ms 308 KB Output is correct
16 Correct 2 ms 724 KB Output is correct
17 Correct 2 ms 724 KB Output is correct
18 Correct 2 ms 724 KB Output is correct
19 Correct 9 ms 2492 KB Output is correct
20 Correct 8 ms 2500 KB Output is correct
21 Correct 9 ms 2388 KB Output is correct
22 Correct 613 ms 3284 KB Output is correct
23 Correct 601 ms 3284 KB Output is correct
24 Correct 599 ms 3284 KB Output is correct
25 Correct 601 ms 3316 KB Output is correct
26 Correct 615 ms 3404 KB Output is correct

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 903 ms 128340 KB Output is correct
2 Correct 968 ms 128380 KB Output is correct
3 Correct 922 ms 128016 KB Output is correct
4 Correct 993 ms 128448 KB Output is correct
5 Correct 1304 ms 126400 KB Output is correct
6 Execution timed out 3061 ms 142268 KB Time limit exceeded
7 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Execution timed out 3080 ms 62920 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3046 ms 181424 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 0 ms 304 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 308 KB Output is correct
6 Correct 1 ms 304 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 2 ms 340 KB Output is correct
14 Correct 2 ms 368 KB Output is correct
15 Correct 2 ms 308 KB Output is correct
16 Correct 2 ms 724 KB Output is correct
17 Correct 2 ms 724 KB Output is correct
18 Correct 2 ms 724 KB Output is correct
19 Correct 9 ms 2492 KB Output is correct
20 Correct 8 ms 2500 KB Output is correct
21 Correct 9 ms 2388 KB Output is correct
22 Correct 613 ms 3284 KB Output is correct
23 Correct 601 ms 3284 KB Output is correct
24 Correct 599 ms 3284 KB Output is correct
25 Correct 601 ms 3316 KB Output is correct
26 Correct 615 ms 3404 KB Output is correct
27 Correct 17 ms 4612 KB Output is correct
28 Correct 17 ms 4680 KB Output is correct
29 Correct 17 ms 4620 KB Output is correct
30 Correct 1373 ms 6324 KB Output is correct
31 Correct 1401 ms 6324 KB Output is correct
32 Correct 1368 ms 6348 KB Output is correct
33 Correct 232 ms 44284 KB Output is correct
34 Correct 240 ms 44292 KB Output is correct
35 Correct 1440 ms 44068 KB Output is correct
36 Execution timed out 3060 ms 62828 KB Time limit exceeded
37 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 0 ms 304 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 308 KB Output is correct
6 Correct 1 ms 304 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 2 ms 340 KB Output is correct
14 Correct 2 ms 368 KB Output is correct
15 Correct 2 ms 308 KB Output is correct
16 Correct 2 ms 724 KB Output is correct
17 Correct 2 ms 724 KB Output is correct
18 Correct 2 ms 724 KB Output is correct
19 Correct 9 ms 2492 KB Output is correct
20 Correct 8 ms 2500 KB Output is correct
21 Correct 9 ms 2388 KB Output is correct
22 Correct 613 ms 3284 KB Output is correct
23 Correct 601 ms 3284 KB Output is correct
24 Correct 599 ms 3284 KB Output is correct
25 Correct 601 ms 3316 KB Output is correct
26 Correct 615 ms 3404 KB Output is correct
27 Correct 903 ms 128340 KB Output is correct
28 Correct 968 ms 128380 KB Output is correct
29 Correct 922 ms 128016 KB Output is correct
30 Correct 993 ms 128448 KB Output is correct
31 Correct 1304 ms 126400 KB Output is correct
32 Execution timed out 3061 ms 142268 KB Time limit exceeded
33 Halted 0 ms 0 KB -