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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#601200#5251. Constellationshzy99999WA 4335ms35208kbC++202.3kb2024-09-29 21:22:442024-09-29 21:22:45

Judging History

你现在查看的是最新测评结果

  • [2024-09-29 21:22:45]
  • 评测
  • 测评结果:WA
  • 用时:4335ms
  • 内存:35208kb
  • [2024-09-29 21:22:44]
  • 提交

answer

#include <iostream>
#include <cstring>
#include <algorithm>
#include <cmath>
#include <queue>
#include <vector>
#define x first
#define y second
using namespace std;
typedef long long LL;
typedef pair<int, int> PII;
const int N = 2e3 + 10;
const double eps = 1e-9;
double dist[N][N];
int n;
PII point[N];
int sz[N], year[N]; // year越小越老
int dcmp(double a, double b)
{
    if (fabs(a - b) < eps)
        return 0;
    if (a < b)
        return -1;
    return 1;
}
double get_dist(PII a, PII b)
{
    int dx = a.x - b.x, dy = a.y - b.y;
    return sqrt(dx * dx + dy * dy);
}
int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin >> n;
    for (int i = 1; i <= n; i++)
        sz[i] = 1;
    for (int i = 1; i <= n; i++)
    {
        int x, y;
        cin >> x >> y;
        point[i] = {x, y};
        year[i] = i;
    }
    int stand = n;
    for (int i = 1; i <= n; i++)
        for (int j = i + 1; j <= n; j++)
            dist[i][j] = dist[j][i] = get_dist(point[i], point[j]);
    vector<int> num;
    for (int i = 1; i <= n; i++)
        num.push_back(i);
    for (int k = 1; k < n; k++)
    {
        PII t = {-1, -1}; // 存位置
        double minv = 1e12;
        for (int i = 0; i < num.size(); i++)
            for (int j = i + 1; j < num.size(); j++)
            {
                int a = num[i], b = num[j];
                if (year[a] < year[b])
                    swap(a, b);
                if (t.x == -1 || dcmp(minv * (sz[a] + sz[b]), dist[a][b] * (sz[num[t.x]] + sz[num[t.y]])) > 0 || dcmp(minv * (sz[a] + sz[b]), dist[a][b] * (sz[num[t.x]] + sz[num[t.y]])) == 0 && (year[num[t.x]] > year[a] || year[num[t.x]] == year[a] && year[num[t.y]] < year[b]))
                    t = {i, j}, minv = dist[a][b];
            }
        for (int i = 0; i < num.size(); i++)
        {
            if (i == t.x || i == t.y)
                continue;
            int x = num[t.x], y = num[t.y];
            int a = num[i];
            dist[x][a] = dist[a][x] = (dist[x][a] * sz[x] + dist[y][a] * sz[y]); // / (sz[x] + sz[y]);
        }
        sz[num[t.x]] += sz[num[t.y]], sz[num[t.y]] = 0;
        year[num[t.x]] = ++stand;
        cout << sz[num[t.x]] << endl;
        num.erase(num.begin() + t.y);
    }
    return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3600kb

input:

2
0 0
1 0

output:

2

result:

ok single line: '2'

Test #2:

score: 0
Accepted
time: 3348ms
memory: 35008kb

input:

2000
1000 -1000
1000 -999
1000 -998
1000 -997
1000 -996
1000 -995
1000 -994
1000 -993
1000 -992
1000 -991
1000 -990
1000 -989
1000 -988
1000 -987
1000 -986
1000 -985
1000 -984
1000 -983
1000 -982
1000 -981
1000 -980
1000 -979
1000 -978
1000 -977
1000 -976
1000 -975
1000 -974
1000 -973
1000 -972
1000...

output:

2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
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2
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2
2
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2
2
2
2
2
2
2
2
2
2
2
2
...

result:

ok 1999 lines

Test #3:

score: 0
Accepted
time: 3354ms
memory: 35052kb

input:

2000
-1000 1000
-999 1000
-998 1000
-997 1000
-996 1000
-995 1000
-994 1000
-993 1000
-992 1000
-991 1000
-990 1000
-989 1000
-988 1000
-987 1000
-986 1000
-985 1000
-984 1000
-983 1000
-982 1000
-981 1000
-980 1000
-979 1000
-978 1000
-977 1000
-976 1000
-975 1000
-974 1000
-973 1000
-972 1000
-971...

output:

2
2
2
2
2
2
2
2
2
2
2
2
2
2
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2
2
2
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2
2
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2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
...

result:

ok 1999 lines

Test #4:

score: 0
Accepted
time: 3309ms
memory: 35048kb

input:

2000
-1000 -1000
-999 -1000
-998 -1000
-997 -1000
-996 -1000
-995 -1000
-994 -1000
-993 -1000
-992 -1000
-991 -1000
-990 -1000
-989 -1000
-988 -1000
-987 -1000
-986 -1000
-985 -1000
-984 -1000
-983 -1000
-982 -1000
-981 -1000
-980 -1000
-979 -1000
-978 -1000
-977 -1000
-976 -1000
-975 -1000
-974 -10...

output:

2
2
2
2
2
2
2
2
2
2
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2
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2
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2
2
2
2
2
2
2
...

result:

ok 1999 lines

Test #5:

score: 0
Accepted
time: 3325ms
memory: 35208kb

input:

2000
-1000 -1000
-1000 -999
-1000 -998
-1000 -997
-1000 -996
-1000 -995
-1000 -994
-1000 -993
-1000 -992
-1000 -991
-1000 -990
-1000 -989
-1000 -988
-1000 -987
-1000 -986
-1000 -985
-1000 -984
-1000 -983
-1000 -982
-1000 -981
-1000 -980
-1000 -979
-1000 -978
-1000 -977
-1000 -976
-1000 -975
-1000 -9...

output:

2
2
2
2
2
2
2
2
2
2
2
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2
2
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2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
...

result:

ok 1999 lines

Test #6:

score: 0
Accepted
time: 3338ms
memory: 35068kb

input:

2000
1000 -250
1000 -249
1000 -248
1000 -247
1000 -246
1000 -245
1000 -244
1000 -243
1000 -242
1000 -241
1000 -240
1000 -239
1000 -238
1000 -237
1000 -236
1000 -235
1000 -234
1000 -233
1000 -232
1000 -231
1000 -230
1000 -229
1000 -228
1000 -227
1000 -226
1000 -225
1000 -224
1000 -223
1000 -222
1000 ...

output:

2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
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2
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2
2
2
...

result:

ok 1999 lines

Test #7:

score: 0
Accepted
time: 3381ms
memory: 35196kb

input:

2000
0 -1000
0 -999
0 -998
0 -997
0 -996
0 -995
0 -994
0 -993
0 -992
0 -991
0 -990
0 -989
0 -988
0 -987
0 -986
0 -985
0 -984
0 -983
0 -982
0 -981
0 -980
0 -979
0 -978
0 -977
0 -976
0 -975
0 -974
0 -973
0 -972
0 -971
0 -970
0 -969
0 -968
0 -967
0 -966
0 -965
0 -964
0 -963
0 -962
0 -961
0 -960
0 -959
...

output:

2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
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2
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2
2
2
2
2
...

result:

ok 1999 lines

Test #8:

score: -100
Wrong Answer
time: 4335ms
memory: 35068kb

input:

2000
-400 571
-725 636
-880 529
-657 372
-383 382
-746 888
-604 785
-497 557
-677 977
-562 917
-530 623
-636 535
-816 579
-633 428
-573 561
-496 479
-409 448
-570 379
-421 795
-827 865
-730 809
-423 984
-676 772
-398 816
-451 373
-756 777
-351 829
-954 345
-543 871
-595 521
-501 734
-378 769
-987 60...

output:

2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
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3
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2
2
3
2
2
2
2
...

result:

wrong answer 43rd lines differ - expected: '3', found: '2'