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답안 #773347

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
773347 2023-07-04T23:54:30 Z xetrk 원 고르기 (APIO18_circle_selection) C++14
42 / 100
 1553 ms 47040 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 skipX[300100], skipY[300100];
int xIdx[300100], yIdx[300100];

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;
}

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 });
        skipX[i] = i + 1;
        skipY[i] = 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;
        if (xIdx[cur] - 1 >= 0)
        {
            skipX[xIdx[cur] - 1] = skipX[xIdx[cur]];
            if (skipX[xIdx[cur] - 1] == 0) skipX[xIdx[cur] - 1] = n + 1;
        }
        if (yIdx[cur] - 1 >= 0)
        {
            skipY[yIdx[cur] - 1] = skipY[yIdx[cur]];
            if (skipY[yIdx[cur] - 1] == 0) skipY[yIdx[cur] - 1] = n + 1;
        }
        //xIdx[cur]

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

                    if (yIdx[curcmp] - 1 >= 0)
                    {
                        skipY[yIdx[curcmp] - 1] = skipY[yIdx[curcmp]];
                        if (skipY[yIdx[curcmp] - 1] == 0) skipY[yIdx[curcmp] - 1] = n + 1;
                    }
                }
                i = next;
            }
        }
        else
        {
            i = yMin;
            while (i <= yMax)
            {
                curcmp = sortY[i].second;
                next = skipY[i];
                if (ans[curcmp] != -1)
                {
                    i = next;
                    continue;
                }
                rr = r + circle[curcmp][2];
                if (GetDist(x, y, circle[curcmp][0], circle[curcmp][1]) <= rr * rr)
                {
                    ans[curcmp] = cur;
                    //sortX.erase(sortX.begin() + i);
                    if (i >= 0)
                        skipY[i - 1] = skipY[i];

                    if (xIdx[curcmp] - 1 >= 0)
                    {
                        skipX[xIdx[curcmp] - 1] = skipX[xIdx[curcmp]];
                        if (skipX[yIdx[curcmp] - 1] == 0) skipX[xIdx[curcmp] - 1] = n + 1;
                    }
                }
                i = next;
            }
            /*
            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:108:18: 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]
  108 |         if (xMin >= sortX.size()) xMin = sortX.size() - 1;
      |             ~~~~~^~~~~~~~~~~~~~~
circle_selection.cpp:109:18: 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]
  109 |         if (yMin >= sortY.size()) yMin = sortY.size() - 1;
      |             ~~~~~^~~~~~~~~~~~~~~
circle_selection.cpp:110:18: 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]
  110 |         if (xMax >= sortX.size()) xMax = sortX.size() - 1;
      |             ~~~~~^~~~~~~~~~~~~~~
circle_selection.cpp:111:18: 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]
  111 |         if (yMax >= sortY.size()) yMax = sortY.size() - 1;
      |             ~~~~~^~~~~~~~~~~~~~~
circle_selection.cpp:50:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   50 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
circle_selection.cpp:54:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   54 |         scanf("%lld %lld %lld", &x, &y, &r);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 312 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 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 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 1 ms 468 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 2 ms 448 KB Output is correct
19 Correct 4 ms 1236 KB Output is correct
20 Correct 6 ms 1320 KB Output is correct
21 Correct 4 ms 1344 KB Output is correct
22 Correct 5 ms 1236 KB Output is correct
23 Correct 5 ms 1216 KB Output is correct
24 Correct 6 ms 1236 KB Output is correct
25 Correct 5 ms 1216 KB Output is correct
26 Correct 6 ms 1216 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 201 ms 45468 KB Output is correct
2 Correct 218 ms 45388 KB Output is correct
3 Correct 214 ms 45172 KB Output is correct
4 Correct 201 ms 45600 KB Output is correct
5 Correct 225 ms 43132 KB Output is correct
6 Correct 287 ms 43376 KB Output is correct
7 Correct 229 ms 43396 KB Output is correct
8 Correct 246 ms 43328 KB Output is correct

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 175 ms 15844 KB Output is correct
3 Correct 945 ms 46816 KB Output is correct
4 Correct 906 ms 46732 KB Output is correct
5 Correct 1155 ms 45692 KB Output is correct
6 Correct 291 ms 24644 KB Output is correct
7 Correct 97 ms 13024 KB Output is correct
8 Correct 16 ms 2952 KB Output is correct
9 Correct 882 ms 46780 KB Output is correct
10 Incorrect 1553 ms 47040 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #4
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 566 ms 46520 KB Output is correct
2 Correct 475 ms 45716 KB Output is correct
3 Correct 906 ms 46772 KB Output is correct
4 Correct 490 ms 46072 KB Output is correct
5 Correct 513 ms 46324 KB Output is correct
6 Correct 508 ms 46496 KB Output is correct

Subtask #5
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 312 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 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 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 1 ms 468 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 2 ms 448 KB Output is correct
19 Correct 4 ms 1236 KB Output is correct
20 Correct 6 ms 1320 KB Output is correct
21 Correct 4 ms 1344 KB Output is correct
22 Correct 5 ms 1236 KB Output is correct
23 Correct 5 ms 1216 KB Output is correct
24 Correct 6 ms 1236 KB Output is correct
25 Correct 5 ms 1216 KB Output is correct
26 Correct 6 ms 1216 KB Output is correct
27 Correct 9 ms 2056 KB Output is correct
28 Correct 7 ms 2036 KB Output is correct
29 Correct 7 ms 2032 KB Output is correct
30 Correct 11 ms 1980 KB Output is correct
31 Correct 12 ms 1992 KB Output is correct
32 Correct 11 ms 1980 KB Output is correct
33 Correct 72 ms 16076 KB Output is correct
34 Correct 74 ms 16076 KB Output is correct
35 Incorrect 72 ms 15912 KB Output isn't correct
36 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 312 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 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 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 1 ms 468 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 2 ms 448 KB Output is correct
19 Correct 4 ms 1236 KB Output is correct
20 Correct 6 ms 1320 KB Output is correct
21 Correct 4 ms 1344 KB Output is correct
22 Correct 5 ms 1236 KB Output is correct
23 Correct 5 ms 1216 KB Output is correct
24 Correct 6 ms 1236 KB Output is correct
25 Correct 5 ms 1216 KB Output is correct
26 Correct 6 ms 1216 KB Output is correct
27 Correct 201 ms 45468 KB Output is correct
28 Correct 218 ms 45388 KB Output is correct
29 Correct 214 ms 45172 KB Output is correct
30 Correct 201 ms 45600 KB Output is correct
31 Correct 225 ms 43132 KB Output is correct
32 Correct 287 ms 43376 KB Output is correct
33 Correct 229 ms 43396 KB Output is correct
34 Correct 246 ms 43328 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 175 ms 15844 KB Output is correct
37 Correct 945 ms 46816 KB Output is correct
38 Correct 906 ms 46732 KB Output is correct
39 Correct 1155 ms 45692 KB Output is correct
40 Correct 291 ms 24644 KB Output is correct
41 Correct 97 ms 13024 KB Output is correct
42 Correct 16 ms 2952 KB Output is correct
43 Correct 882 ms 46780 KB Output is correct
44 Incorrect 1553 ms 47040 KB Output isn't correct
45 Halted 0 ms 0 KB -