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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#101383#5251. ConstellationsDestroyXuanQuang#AC ✓8740ms128696kbC++172.4kb2023-04-29 12:34:492023-04-29 12:34:53

Judging History

你现在查看的是最新测评结果

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2023-04-29 12:34:53]
  • 评测
  • 测评结果:AC
  • 用时:8740ms
  • 内存:128696kb
  • [2023-04-29 12:34:49]
  • 提交

answer

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

struct Frac {
    ll p, q;
    bool inline operator < (const Frac &rhs) const {
        return p * rhs.q < q * rhs.p;
    }
};

struct Pair {
    Frac dist; int i, j;
    Pair(Frac dist, int _i, int _j): dist(dist), i(_i), j(_j) {
        if (i > j) swap(i, j);
    }
    bool inline operator < (const Pair &rhs) const {
        return make_tuple(dist, i, j) < make_tuple(rhs.dist, rhs.i, rhs.j);
    }
};

struct Group {
    ll x2, x, y2, y;
    int id, sz;
};

Group merge(Group &a, Group &b, int id) {
    return {
        a.x2 + b.x2,
        a.x + b.x,
        a.y2 + b.y2,
        a.y + b.y,
        id,
        a.sz + b.sz,
    };
}

Frac getDist(Group &a, Group &b) {
    ll dx = b.sz * a.x2 + a.sz * b.x2 - 2 * a.x * b.x;
    ll dy = b.sz * a.y2 + a.sz * b.y2 - 2 * a.y * b.y;
    return {dx + dy, a.sz * b.sz};
}

int main() {
    int n;
    vector<Group> group;

    cin >> n;
    for(int i = 0; i < n; ++i) {
        int x, y;
        cin >> x >> y;
        group.push_back({x*x, x, y*y, y, i, 1});
    }

    auto getPair = [&](int i, int j) {
        Frac dist = getDist(group[i], group[j]);
        return Pair(dist, i, j);
    };

    set<Pair> s;
    for(int i = 0; i < n; ++i) {
        for(int j = i+1; j < n; ++j) {
            s.insert(getPair(i, j));
        }
    }

    vector<bool> active(n, true);

    while (!s.empty()) {
        // for(auto [dist, i, j]: s) printf("dist, i, j: (%lld, %lld) %d %d\n", dist.p, dist.q, i, j);
        int p0 = s.begin()->i, p1 = s.begin()->j; s.erase(s.begin());
        int n = group.size();

        active[p0] = false;
        active[p1] = false;
        for(int i = 0; i < n; ++i) {
            if (active[i]) {
                Pair c1 = getPair(i, p0);
                Pair c2 = getPair(i, p1);
                // printf("dist, i, p0: %lld %lld %d %d\n", c1.dist.p, c1.dist.q, c1.i, c1.j);
                // printf("dist, i, p1: %lld %lld %d %d\n", c2.dist.p, c2.dist.q, c2.i, c2.j);
                s.erase(c1);
                s.erase(c2);
            }
        }

        group.push_back(merge(group[p0], group[p1], n));
        printf("%d\n", group[n].sz);
        active.push_back(true);
        for(int i = 0; i < n; ++i) {
            if (active[i]) {
                s.insert(getPair(i, n));
            }
        }
    }

    return 0;
}

详细

Test #1:

score: 100
Accepted
time: 2ms
memory: 3616kb

input:

2
0 0
1 0

output:

2

result:

ok single line: '2'

Test #2:

score: 0
Accepted
time: 3311ms
memory: 128644kb

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
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...

result:

ok 1999 lines

Test #3:

score: 0
Accepted
time: 3310ms
memory: 128552kb

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
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...

result:

ok 1999 lines

Test #4:

score: 0
Accepted
time: 3329ms
memory: 128592kb

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
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2
2
2
2
...

result:

ok 1999 lines

Test #5:

score: 0
Accepted
time: 3285ms
memory: 128548kb

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
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2
2
2
2
2
...

result:

ok 1999 lines

Test #6:

score: 0
Accepted
time: 4989ms
memory: 128564kb

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
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...

result:

ok 1999 lines

Test #7:

score: 0
Accepted
time: 3353ms
memory: 128520kb

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
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2
2
2
...

result:

ok 1999 lines

Test #8:

score: 0
Accepted
time: 8061ms
memory: 128644kb

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
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2
2
2
3
2
...

result:

ok 1999 lines

Test #9:

score: 0
Accepted
time: 8243ms
memory: 128624kb

input:

2000
-946 966
-655 760
-539 413
-857 715
-668 993
-543 399
-724 415
-584 464
-364 541
-518 756
-966 790
-648 616
-654 419
-842 544
-714 482
-636 984
-904 343
-559 925
-440 494
-636 780
-695 494
-585 465
-487 396
-683 886
-949 959
-668 518
-780 583
-854 612
-786 601
-527 758
-444 563
-994 840
-575 49...

output:

2
2
2
2
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2
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...

result:

ok 1999 lines

Test #10:

score: 0
Accepted
time: 8293ms
memory: 128556kb

input:

2000
-707 382
-500 486
-927 357
-972 984
-738 591
-535 766
-610 603
-582 908
-923 676
-689 828
-940 783
-502 728
-971 384
-873 909
-824 412
-532 805
-715 448
-972 748
-423 975
-355 915
-943 453
-740 998
-776 457
-395 764
-805 337
-650 520
-656 612
-1000 841
-758 423
-414 762
-443 674
-666 469
-814 6...

output:

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

result:

ok 1999 lines

Test #11:

score: 0
Accepted
time: 8186ms
memory: 128696kb

input:

2000
0 0
0 -1
1 -1
-1 1
-1 2
1 -2
3 0
1 -4
3 -3
-2 -4
-1 5
5 3
3 -6
4 6
-6 -5
4 -7
-2 9
1 -9
7 7
4 10
7 9
5 10
6 11
-5 12
-13 4
-5 13
14 2
10 11
-6 14
16 -1
11 -12
-14 -9
-14 11
15 11
-16 9
6 18
0 20
13 -15
9 -19
-10 -19
-21 8
-4 -22
-23 0
16 17
12 -21
-22 12
4 25
-14 -21
-7 -25
-3 -27
-27 1
23 16
1...

output:

2
2
2
2
2
2
2
2
2
2
2
2
4
3
3
2
2
2
2
2
2
2
2
2
2
2
2
2
5
2
2
2
2
2
2
2
2
2
2
2
2
2
7
5
3
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
9
3
2
2
2
2
2
2
3
3
3
6
2
2
2
2
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2
2
2
3
3
2
2
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2
2
2
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2
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2
8
2
2
2
2
2
2
2
2
2
3
3
4
4
2
2
2
2
11
3
3
2
2
2
2
2
2
4
2
2
2
2
2
2
2
2
2...

result:

ok 1999 lines

Test #12:

score: 0
Accepted
time: 8269ms
memory: 128548kb

input:

2000
0 0
-1 0
1 -1
0 -2
-1 -2
1 3
-3 1
3 2
-4 -1
-2 -4
4 4
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-6 3
3 6
6 5
-7 4
-9 -2
8 5
3 -9
3 -10
11 0
8 -9
-6 -11
11 -7
6 12
-7 -12
0 -14
14 -5
-15 -1
-4 -15
-2 -16
-13 11
-15 -9
8 16
-18 -6
18 5
-16 12
-9 18
-1 -21
-15 -15
4 -22
-22 4
7 -22
19 -14
16 -18
15 19
-5 25
2 26
-1 26
-7 -26
23 -16
...

output:

2
2
2
2
2
2
2
2
3
2
2
2
2
2
2
5
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
3
4
3
3
2
2
2
2
2
2
7
2
2
2
2
2
2
2
2
2
2
2
2
2
9
2
2
2
2
2
2
2
2
2
6
2
3
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
4
2
2
2
2
2
3
3
2
2
2
2
2
2
2
2
2
5
2
2
2
2
2
2
3
2
2
2
2
2
2
2
2
2
2
3
4
2
2
3
3
3
3
2
2
2
2
2
2
2
2
2
2
2
2
2
...

result:

ok 1999 lines

Test #13:

score: 0
Accepted
time: 8610ms
memory: 128556kb

input:

2000
44 -748
385 448
-556 196
-569 -152
25 178
-865 609
644 -339
780 -558
429 676
469 712
876 987
-21 705
-742 679
375 970
-884 186
158 -340
-665 -673
153 484
-662 155
879 -724
-490 -785
-273 641
318 557
377 -706
260 695
-657 -926
-561 -315
861 -328
836 253
432 -505
-229 832
-774 -194
866 -951
171 6...

output:

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

result:

ok 1999 lines

Test #14:

score: 0
Accepted
time: 8740ms
memory: 128636kb

input:

2000
594 213
978 59
312 909
-226 -78
361 -398
-349 80
-9 -489
862 -525
-104 442
817 901
-243 921
-398 -185
279 -86
29 971
161 187
103 920
-825 -631
997 -179
-883 -78
442 322
463 -867
174 836
-92 308
179 -281
-960 578
513 -27
-436 -585
435 -621
-630 898
816 -515
693 205
-855 -124
27 -819
5 325
-510 -...

output:

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

result:

ok 1999 lines

Test #15:

score: 0
Accepted
time: 8608ms
memory: 128648kb

input:

2000
30 -912
687 32
-171 -142
320 -399
-304 640
-449 -761
-616 -493
-948 -63
-597 689
821 -935
-24 959
-568 78
-311 -446
929 733
-41 497
-345 909
131 -65
626 143
93 317
240 -796
165 193
-435 -211
-413 -830
845 -457
261 -508
-561 732
-194 934
-615 761
762 -370
614 -348
-663 720
-857 -457
695 -769
668...

output:

2
2
2
2
2
2
2
2
2
2
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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2
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3
2
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2
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2
2
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2
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2
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2
2
2
2
2
2
2
2
3
3
2
2
2
2
2
3
2
2
2
2
2
2
2
2
2
2
2
2
2
2
4
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
3
3
2
2
2
2
2
2
2
2
3
2
2
2
2
2
2
2
2
2
2
...

result:

ok 1999 lines

Test #16:

score: 0
Accepted
time: 2ms
memory: 3688kb

input:

4
0 0
0 -1
0 1
0 2

output:

2
2
4

result:

ok 3 lines