oj.uz

Submission #791200

# Submission time Handle Problem Language Result Execution time Memory
791200 2023-07-23T15:07:50 Z xetrk Circle selection (APIO18_circle_selection) C++14
30 / 100
 3000 ms 177628 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;
    ll gridSizeMin = sortRadius[sortRadius.size() - 1].first * 2LL;
    ll gap = (gridSize - gridSizeMin)/n + 1;
    ll curGapPos = n - 1, beforeCurGapPos;
    unordered_map<ll, multiset<vector<ll>>> gridAll = SetGrid(gridSize);

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

    multiset<vector<ll>> curGrids;



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

        /*
        if (gridSize / 1.1 >= sortRadius[curDelete].first * 2LL && gridSize / 1.1 >= 1)
        {
            gridSize /= 1.1;
            gridAll = SetGrid(gridSize);
        }*/
        /*
        if (gridSizeMin + curGapPos * gap > sortRadius[curDelete].first * 2LL)
        {
            curGapPos--;
            gridSize = sortRadius[curDelete].first * 2LL;
            gridAll = SetGrid(gridSize);
        }*/
        beforeCurGapPos = curGapPos;
        while (gridSizeMin + curGapPos * gap > sortRadius[curDelete].first * 2LL)
        {
            curGapPos--;
        }
        if (beforeCurGapPos > curGapPos)
        {
            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 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 372 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 2 ms 596 KB Output is correct
18 Correct 2 ms 712 KB Output is correct
19 Correct 7 ms 2356 KB Output is correct
20 Correct 7 ms 2044 KB Output is correct
21 Correct 8 ms 2132 KB Output is correct
22 Correct 2195 ms 3184 KB Output is correct
23 Correct 2147 ms 3376 KB Output is correct
24 Correct 2291 ms 3260 KB Output is correct
25 Correct 2170 ms 3316 KB Output is correct
26 Correct 2163 ms 3320 KB Output is correct

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 840 ms 123388 KB Output is correct
2 Correct 1016 ms 123296 KB Output is correct
3 Correct 898 ms 123056 KB Output is correct
4 Correct 845 ms 123248 KB Output is correct
5 Correct 1304 ms 121788 KB Output is correct
6 Execution timed out 3063 ms 139476 KB Time limit exceeded
7 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Execution timed out 3060 ms 58876 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1809 ms 175636 KB Output is correct
2 Correct 1809 ms 177556 KB Output is correct
3 Correct 1312 ms 129056 KB Output is correct
4 Correct 1828 ms 177628 KB Output is correct
5 Correct 1772 ms 177560 KB Output is correct
6 Correct 1321 ms 125196 KB Output is correct

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 372 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 2 ms 596 KB Output is correct
18 Correct 2 ms 712 KB Output is correct
19 Correct 7 ms 2356 KB Output is correct
20 Correct 7 ms 2044 KB Output is correct
21 Correct 8 ms 2132 KB Output is correct
22 Correct 2195 ms 3184 KB Output is correct
23 Correct 2147 ms 3376 KB Output is correct
24 Correct 2291 ms 3260 KB Output is correct
25 Correct 2170 ms 3316 KB Output is correct
26 Correct 2163 ms 3320 KB Output is correct
27 Correct 14 ms 3948 KB Output is correct
28 Correct 13 ms 4108 KB Output is correct
29 Correct 16 ms 4032 KB Output is correct
30 Execution timed out 3061 ms 6284 KB Time limit exceeded
31 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 372 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 2 ms 596 KB Output is correct
18 Correct 2 ms 712 KB Output is correct
19 Correct 7 ms 2356 KB Output is correct
20 Correct 7 ms 2044 KB Output is correct
21 Correct 8 ms 2132 KB Output is correct
22 Correct 2195 ms 3184 KB Output is correct
23 Correct 2147 ms 3376 KB Output is correct
24 Correct 2291 ms 3260 KB Output is correct
25 Correct 2170 ms 3316 KB Output is correct
26 Correct 2163 ms 3320 KB Output is correct
27 Correct 840 ms 123388 KB Output is correct
28 Correct 1016 ms 123296 KB Output is correct
29 Correct 898 ms 123056 KB Output is correct
30 Correct 845 ms 123248 KB Output is correct
31 Correct 1304 ms 121788 KB Output is correct
32 Execution timed out 3063 ms 139476 KB Time limit exceeded
33 Halted 0 ms 0 KB -