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답안 #774186

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
774186 2023-07-05T12:47:04 Z xetrk 원 고르기 (APIO18_circle_selection) C++14
7 / 100
 1455 ms 77768 KB 
#pragma warning(disable:4996)

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


typedef long long ll;
typedef long double ld;

int n;

vector<vector<ll>> circle;

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


int ans[301000];
int parentX[300100], parentY[300100];
//int depthX[300100], depthY[300100];
int xIdx[300100], yIdx[300100];

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;
}


int find(int a, int parent[])
{
    if (parent[a] != a)
        parent[a] = find(parent[a], parent);
    return parent[a];
}

void merge(int a, int b, int parent[]) 
{
    a = find(a, parent), b = find(b, parent);
    if (a > b) swap(a, b);//b가더커야함
    parent[a] = b;//더큰걸부모로
}

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;
        circle.push_back({ x,y,r });
        sortRadius.push_back({ r,i });
        sortX.push_back({ x,i });
        sortY.push_back({ y,i });
        parentX[i] = parentY[i] = i;
        //depthX[i] = depthY[i] = 1;
    }

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


    for (int i = 0; i < n; i++)
    {
        xIdx[sortX[i].second] = i;
        yIdx[sortY[i].second] = i;
    }

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



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

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


        x = circle[cur][0], y = circle[cur][1], r = circle[cur][2];
        if (curDelete < n - 1)
            r2 = r + sortRadius[curDelete + 1].first + 1;
        else
            r2 = r * 2 + 1;

        // a이하를 찾아야하는데 lower bound는  a이상인걸 찾으니까.. 근데 그 이하인걸 찾아야하니 1빼줌
        xMin = lower_bound(sortX.begin(), sortX.end(), pair<ll, int>(x - r2, -1), comp) - sortX.begin();
        xMax = upper_bound(sortX.begin(), sortX.end(), pair<ll, int>(x + r2, 301000), comp) - sortX.begin();

        yMin = lower_bound(sortY.begin(), sortY.end(), pair<ll, int>(y - r2, -1), comp) - sortY.begin();
        yMax = upper_bound(sortY.begin(), sortY.end(), pair<ll, int>(y + r2, 301000), comp) - sortY.begin();

        xMin--;
        yMin--;

        if (xMin < 0) xMin = 0;
        if (yMin < 0) yMin = 0;

        if (xMin >= sortX.size()) xMin = sortX.size() - 1;
        if (yMin >= sortY.size()) yMin = sortY.size() - 1;
        if (xMax >= sortX.size()) xMax = sortX.size() - 1;
        if (yMax >= sortY.size()) yMax = sortY.size() - 1;

        //xMin = 0, yMin = 0, xMax = n - 1, yMax = n - 1;


        ans[cur] = cur;
        //xIdx[cur]
        int j;

        if (xMax - xMin < yMax - yMin)
        {
            i = xMin;
            while (i <= xMax)
            {
                curcmp = sortX[i].second;
                
                if (ans[curcmp] != -1)
                {
                    i = find(i, parentX) + 1;
                    continue;
                }
                rr = r + circle[curcmp][2];
                if (GetDist(x, y, circle[curcmp][0], circle[curcmp][1]) <= rr * rr)
                {
                    ans[curcmp] = cur;

                    if (i - 1 >= 0 && ans[sortX[i - 1].second] != -1)
                        merge(i, i - 1, parentX);
                    if (i + 1 < n && ans[sortX[i + 1].second] != -1)
                        merge(i, i + 1, parentX);

                    j = yIdx[curcmp];

                    if (j - 1 >= 0 && ans[sortY[j - 1].second] != -1)
                        merge(j, j - 1, parentY);
                    if (j + 1 < n && ans[sortY[j - 1].second] != -1)
                        merge(j, j + 1, parentY);
                   
                }
                i = find(i, parentX) + 1;
            }
        }
        else
        {
            i = yMin;
            while (i <= yMax)
            {
                curcmp = sortY[i].second;
                if (ans[curcmp] != -1)
                {
                    i = find(i, parentY) + 1;
                    continue;
                }
                rr = r + circle[curcmp][2];
                if (GetDist(x, y, circle[curcmp][0], circle[curcmp][1]) <= rr * rr)
                {
                    ans[curcmp] = cur;

                    if (i - 1 >= 0 && ans[sortY[i - 1].second] != -1)
                        merge(i, i - 1, parentY);
                    if (i + 1 < n && ans[sortY[i + 1].second] != -1)
                        merge(i, i + 1, parentY);


                    j = xIdx[curcmp];

                    if (j - 1 >= 0 && ans[sortX[j - 1].second] != -1)
                        merge(j, j - 1, parentX);
                    if (j + 1 < n && ans[sortX[j + 1].second] != -1)
                        merge(j, j + 1, parentX);

                }
                i = find(i, parentY) + 1;
            }
            /*
            for (int i = yMax; i >= yMin; i--)
            {
             curcmp = sortY[i].second;
             if (ans[curcmp]!= -1) continue;
             rr = r + circle[curcmp][2];
             if (GetDist(x, y, circle[curcmp][0], circle[curcmp][1]) <= rr * rr)
             {
              ans[curcmp] = cur;
              //sortY.erase(sortY.begin() + i);
             }
            }*/
        }
    }

    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:126:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  126 |         if (xMin >= sortX.size()) xMin = sortX.size() - 1;
      |             ~~~~~^~~~~~~~~~~~~~~
circle_selection.cpp:127:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  127 |         if (yMin >= sortY.size()) yMin = sortY.size() - 1;
      |             ~~~~~^~~~~~~~~~~~~~~
circle_selection.cpp:128:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  128 |         if (xMax >= sortX.size()) xMax = sortX.size() - 1;
      |             ~~~~~^~~~~~~~~~~~~~~
circle_selection.cpp:129:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  129 |         if (yMax >= sortY.size()) yMax = sortY.size() - 1;
      |             ~~~~~^~~~~~~~~~~~~~~
circle_selection.cpp:93:9: warning: unused variable 'next' [-Wunused-variable]
   93 |     int next;
      |         ^~~~
circle_selection.cpp:66:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   66 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
circle_selection.cpp:70:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   70 |         scanf("%lld %lld %lld", &x, &y, &r);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 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 304 KB Output is correct
5 Correct 1 ms 304 KB Output is correct
6 Correct 0 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 1 ms 340 KB Output is correct
10 Correct 1 ms 308 KB Output is correct
11 Correct 1 ms 312 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 308 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 2 ms 444 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 1 ms 444 KB Output is correct
19 Correct 5 ms 1236 KB Output is correct
20 Correct 4 ms 1236 KB Output is correct
21 Correct 5 ms 1364 KB Output is correct
22 Correct 5 ms 1236 KB Output is correct
23 Correct 6 ms 1236 KB Output is correct
24 Correct 6 ms 1236 KB Output is correct
25 Correct 5 ms 1236 KB Output is correct
26 Correct 7 ms 1424 KB Output is correct

Subtask #2
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 222 ms 42324 KB Output is correct
2 Correct 263 ms 44240 KB Output is correct
3 Correct 223 ms 42160 KB Output is correct
4 Correct 217 ms 42468 KB Output is correct
5 Runtime error 215 ms 77768 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 194 ms 15724 KB Output is correct
3 Correct 1054 ms 42436 KB Output is correct
4 Correct 995 ms 42424 KB Output is correct
5 Incorrect 1455 ms 41496 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 611 ms 42248 KB Output is correct
2 Correct 498 ms 42488 KB Output is correct
3 Incorrect 1061 ms 42048 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# 결과 실행 시간 메모리 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 304 KB Output is correct
5 Correct 1 ms 304 KB Output is correct
6 Correct 0 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 1 ms 340 KB Output is correct
10 Correct 1 ms 308 KB Output is correct
11 Correct 1 ms 312 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 308 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 2 ms 444 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 1 ms 444 KB Output is correct
19 Correct 5 ms 1236 KB Output is correct
20 Correct 4 ms 1236 KB Output is correct
21 Correct 5 ms 1364 KB Output is correct
22 Correct 5 ms 1236 KB Output is correct
23 Correct 6 ms 1236 KB Output is correct
24 Correct 6 ms 1236 KB Output is correct
25 Correct 5 ms 1236 KB Output is correct
26 Correct 7 ms 1424 KB Output is correct
27 Correct 7 ms 2056 KB Output is correct
28 Correct 9 ms 2056 KB Output is correct
29 Correct 7 ms 2036 KB Output is correct
30 Correct 11 ms 1928 KB Output is correct
31 Correct 11 ms 1928 KB Output is correct
32 Correct 11 ms 2004 KB Output is correct
33 Correct 75 ms 16192 KB Output is correct
34 Correct 77 ms 16136 KB Output is correct
35 Correct 78 ms 15964 KB Output is correct
36 Correct 142 ms 15472 KB Output is correct
37 Correct 138 ms 15624 KB Output is correct
38 Correct 187 ms 15716 KB Output is correct
39 Incorrect 494 ms 14080 KB Output isn't correct
40 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# 결과 실행 시간 메모리 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 304 KB Output is correct
5 Correct 1 ms 304 KB Output is correct
6 Correct 0 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 1 ms 340 KB Output is correct
10 Correct 1 ms 308 KB Output is correct
11 Correct 1 ms 312 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 308 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 2 ms 444 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 1 ms 444 KB Output is correct
19 Correct 5 ms 1236 KB Output is correct
20 Correct 4 ms 1236 KB Output is correct
21 Correct 5 ms 1364 KB Output is correct
22 Correct 5 ms 1236 KB Output is correct
23 Correct 6 ms 1236 KB Output is correct
24 Correct 6 ms 1236 KB Output is correct
25 Correct 5 ms 1236 KB Output is correct
26 Correct 7 ms 1424 KB Output is correct
27 Correct 222 ms 42324 KB Output is correct
28 Correct 263 ms 44240 KB Output is correct
29 Correct 223 ms 42160 KB Output is correct
30 Correct 217 ms 42468 KB Output is correct
31 Runtime error 215 ms 77768 KB Execution killed with signal 11
32 Halted 0 ms 0 KB -