QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#698612#5067. Two Wallswtz2333WA 96ms3744kbC++204.2kb2024-11-01 20:47:022024-11-01 20:47:03

Judging History

你现在查看的是最新测评结果

  • [2024-11-01 20:47:03]
  • 评测
  • 测评结果:WA
  • 用时:96ms
  • 内存:3744kb
  • [2024-11-01 20:47:02]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
constexpr double eps = 1e-7;
constexpr double PI = acos(-1);
constexpr double inf = 1e9;
struct Point { ll x, y; };        
using Vec = Point;                
struct Line { Point P; Vec v; };      
struct Seg { Point A, B; };           
Vec operator + (const Vec &a,const Vec &b){return (Vec){a.x + b.x,a.y + b.y};}
Vec operator - (const Vec &a,const Vec &b){return (Vec){a.x - b.x,a.y - b.y};}
ll operator * (const Point &a,const Point &b){return a.x * b.x + a.y * b.y;}// dot // 点乘
ll operator ^ (const Point &a,const Point &b){return a.x * b.y - a.y * b.x;}// cross  // 叉乘
bool operator < (const Point& a, const Point& b) {return a.x < b.x || (a.x == b.x && a.y < b.y);}

ll dis(Point a,Point b) { return (a - b) * (a - b);}
int sgn(ll x){
    if(x == 0)
        return 0;
    if(x < 0)
        return -1;
    return 1;
}
Line line(Point A, Point B) { return {A, B - A}; }
// 线段与线段是否相交
bool cross_seg(Seg A,Seg B){ // 严格不交(不算端点)
    Point a = A.A,b = A.B,c = B.A,d = B.B;
    ll c1 = (b - a) ^ (c - a),c2 = (b - a) ^ (d - a);
    ll d1 = (d - c) ^ (a - c),d2 = (d - c) ^ (b - c);
    return sgn(c1) * sgn(c2) < 0 && sgn(d1) * sgn(d2) < 0;
}

int cross_ray_ray(Line A,Line B) {
    if((A.v ^ B.v) == 0) {
       if(((A.P - B.P) ^ A.v) == 0) {
           if(sgn(A.v * (B.P - A.P)) < 0 && sgn(B.v * (A.P - B.P)) < 0) return -1;
           else return 0;
       }else return -1;
    }
    Vec v = B.P - A.P;
    ll c1 = v ^ A.v;
    ll c2 = v ^ B.v;
    ll c = A.v ^ B.v;
    if(sgn(c1) * sgn(c) >= 0 && sgn(c2) * sgn(c) >= 0) return 1; // 交
    return -1;
}
bool cross_ray_seg(Line A,Seg B){
    if(abs(A.v ^ (B.A - B.B)) < eps)return false;// 平行
    Vec v1 = B.A - A.P,v2 = B.B - A.P;
    if((v2 ^ v1) < 0){
        swap(v1,v2);
    }else if(abs(v2 ^ v1) < eps){
        if((v1 * v2) <= 0)return true;
        else return false;
    }// 保证 v2 在 v1 下面
    int d1 = sgn(A.v ^ v1);
    int d2 = sgn(A.v ^ v2);
    if(d1 >= 0 && d2 <= 0)return true;
    return false;
}
void solve() {
    Point A,B,C,D,E,F;
    cin >> A.x >> A.y >> B.x >> B.y;
    cin >> C.x >> C.y >> D.x >> D.y;
    cin >> E.x >> E.y >> F.x >> F.y;
    Seg s1 = {A,B};
    Seg s2 = {C,D};
    Seg s3 = {E,F};
    if(!cross_seg(s1,s2) && !cross_seg(s1,s3)) {
        cout << 0 << "\n";
        return ;
    }
    if(!cross_seg(s2,s3)) {
        cout << 1 << "\n";
        return ;
    }
    auto calc = [&](Point a) {
        if(sgn((E - C) ^ (D - C)) == sgn((a - C) ^ (D - C))) {
            if(sgn((C - E) ^ (F - E)) == sgn((a - E) ^ (F - E))) return 1;
            else return 2;
        }else {
            if(sgn((C - E) ^ (F - E)) == sgn((a - E) ^ (F - E))) return 4;
            else return 3;

        }
    };
    int flag1 = calc(A),flag2 = calc(B);
    if(abs(flag1 - flag2) != 2) {
        cout << 1 << "\n";
        return ;
    }
    if(flag1 > flag2) {
        swap(A,B);
        swap(flag1,flag2);
    }
    if(flag1 == 1) {
        Line l1 = line(A,C);
        Line l2 = line(A,E);
        Line l3 = line(B,F);
        Line l4 = line(B,D);
        if(cross_ray_ray(l1,l3) == 1 || cross_ray_ray(l2,l4) == 1) {
            cout << 1 << "\n";
            return ;
        }
        if(cross_ray_seg(l1,s3) || cross_ray_seg(l2,s2)) {
            cout << 1 << "\n";
            return ;
        }
        if(cross_ray_seg(l3,s2) || cross_ray_seg(l4,s3)) {
            cout << 1 << "\n";
            return ;
        }
    }else {
        Line l1 = line(A,E);
        Line l2 = line(A,D);
        Line l3 = line(B,C);
        Line l4 = line(B,F);
        if(cross_ray_ray(l1,l3) == 1 || cross_ray_ray(l2,l4) == 1) {
            cout << 1 << "\n";
            return ;
        }
        if(cross_ray_seg(l1,s2) || cross_ray_seg(l2,s3)) {
            cout << 1 << "\n";
            return ;
        }
        if(cross_ray_seg(l3,s3) || cross_ray_seg(l4,s2)) {
            cout << 1 << "\n";
            return ;
        }
    }
    cout << 2 << "\n";
}
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int T;
    cin >> T;
    while(T --) {
        solve();
    }
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3616kb

input:

3
0 0
1 1
2 2 3 3
4 4 5 5
0 0
1 1
2 2 3 3
2 2 3 3
0 0
10 10
10 0 0 10
1 1 2 2

output:

0
0
1

result:

ok 3 number(s): "0 0 1"

Test #2:

score: 0
Accepted
time: 0ms
memory: 3664kb

input:

2
-999999999 999999998
999999999 999999998
-1000000000 -1000000000 1000000000 1000000000
1000000000 -1000000000 -1000000000 1000000000
-999999999 999999998
999999999 999999998
-999999998 -999999998 1000000000 1000000000
999999998 -999999998 -1000000000 1000000000

output:

2
1

result:

ok 2 number(s): "2 1"

Test #3:

score: 0
Accepted
time: 0ms
memory: 3608kb

input:

1
0 0
1 1
2 2 3 3
4 4 5 5

output:

0

result:

ok 1 number(s): "0"

Test #4:

score: 0
Accepted
time: 92ms
memory: 3680kb

input:

100000
-851839419 34688642
-667081997 395784949
-624068418 -155389155 119194510 -758711821
-992436155 -812775173 851861070 -592596572
974613003 -179673992
-485749861 520596304
-115838823 -265233646 -573799007 -222234500
608830643 -887109945 483106217 -906910755
-597593284 384264657
940783 476657007
...

output:

0
0
0
0
0
0
1
0
0
0
0
1
0
0
1
1
0
0
1
1
1
0
1
0
0
1
0
1
0
0
0
0
0
1
0
0
1
0
1
0
0
0
0
0
1
1
1
1
1
0
1
1
0
0
0
0
1
1
0
1
0
0
0
0
0
0
0
0
1
1
0
1
0
0
1
0
0
0
0
1
1
1
1
1
1
0
0
0
1
1
1
0
0
0
0
1
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
1
1
1
0
1
1
0
0
0
0
0
0
1
0
1
1
0
1
0
0
1
0
0
1
1
0
0
0
1
0
1
0
1
0
0
0
1
1
...

result:

ok 100000 numbers

Test #5:

score: 0
Accepted
time: 83ms
memory: 3696kb

input:

100000
-496405053 -492673762
111401587 764822338
-588077735 774345046 959995351 -972693439
-729349041 -573156496 326664422 645305810
-477016787 -561855978
697257071 461011057
-416669921 377733217 784674141 -204150537
695471214 -642123788 -968584097 801626277
-329331824 68483816
945230774 982358552
-...

output:

1
1
1
1
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
1
0
0
1
0
0
0
0
0
0
0
0
0
1
1
0
1
1
1
1
1
0
1
1
0
1
1
1
0
0
1
1
0
1
0
0
0
0
0
1
0
0
0
0
0
0
1
0
1
1
0
1
0
1
0
0
0
0
1
1
0
1
1
0
0
0
1
1
1
1
1
1
0
1
1
0
0
0
0
0
1
0
1
0
1
1
1
0
1
1
1
1
1
1
1
1
0
0
0
0
0
1
0
1
0
0
1
1
0
1
0
1
0
1
0
0
1
1
1
0
0
0
0
0
0
0
1
1
1
1
...

result:

ok 100000 numbers

Test #6:

score: 0
Accepted
time: 86ms
memory: 3696kb

input:

100000
153996608 390029247
838007668 -918017777
-257119758 -244043252 390730779 813324945
-761229221 -38570526 634492154 -116791808
19475923 760994742
-119735998 991360398
-665623518 -632455126 -394909798 -481033868
-974798424 140919454 -715241704 510163308
-61070363 -542264319
-353569028 -511939904...

output:

1
0
0
1
1
1
0
0
0
1
1
0
1
1
0
0
0
1
0
1
1
1
1
0
1
1
1
1
0
1
0
0
0
1
1
0
0
1
0
0
1
1
0
0
0
1
0
0
0
1
0
1
1
0
1
0
1
0
1
1
1
0
0
0
1
0
0
0
0
0
1
1
1
0
0
0
1
0
1
0
0
1
0
1
1
0
1
0
1
0
0
1
0
0
0
0
0
0
1
0
1
1
0
0
1
0
0
0
0
1
0
0
1
0
1
1
0
1
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
1
1
1
1
0
0
1
0
0
0
...

result:

ok 100000 numbers

Test #7:

score: 0
Accepted
time: 91ms
memory: 3692kb

input:

100000
509430974 -432300451
-140418957 -600857890
-464218867 442601156 -768468380 61286241
-203174812 201048150 404262799 826143280
567846134 673780049
525213848 983652653
-671487323 600446325 963563350 -462949905
-888157854 628995403 -166932017 218700340
207191097 898865049
590720963 288728935
4143...

output:

0
0
0
1
0
0
1
1
0
0
1
0
0
1
0
0
0
0
1
0
0
1
0
0
0
0
0
0
0
0
0
1
1
1
0
0
1
1
0
1
1
0
1
0
0
0
0
0
0
1
0
1
0
1
1
0
0
0
0
0
0
1
0
1
1
0
0
0
1
1
0
0
0
0
0
0
1
0
1
0
1
0
0
0
1
1
1
0
0
0
1
1
0
0
0
1
0
0
0
0
1
1
0
0
1
0
1
1
0
1
1
1
0
0
0
0
0
0
0
1
1
1
0
0
1
1
0
0
0
0
0
0
1
1
1
0
1
0
0
1
0
0
0
0
0
1
1
0
1
0
...

result:

ok 100000 numbers

Test #8:

score: 0
Accepted
time: 90ms
memory: 3620kb

input:

100000
-840167367 450402558
586187125 -231820501
-428228185 -627664644 367299755 142271917
59912302 735634121 469000739 64045662
-935661158 291598063
-291779221 -780965301
-920440920 -409742018 -216020590 965199471
-801517283 -587961356 -156679415 465294457
423575055 583084208
-759956341 794430480
8...

output:

1
1
1
0
0
1
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
1
0
1
0
1
0
0
0
1
1
0
0
1
0
0
1
1
1
0
1
0
1
0
0
1
0
0
0
1
1
1
0
0
0
0
0
0
1
1
0
1
0
1
0
0
0
1
0
1
1
0
1
0
0
1
0
0
1
1
1
0
1
1
0
0
0
0
0
0
1
0
0
0
1
0
0
1
1
0
0
1
0
1
1
1
0
0
0
0
1
1
0
0
0
0
1
1
0
0
1
0
0
0
0
1
0
0
1
1
1
0
1
0
1
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
...

result:

ok 100000 numbers

Test #9:

score: 0
Accepted
time: 96ms
memory: 3680kb

input:

100000
-779700294 -76959846
-340361999 380306679
-392237502 58979764 -201964817 -314799493
28032122 -729779910 -56195909 -454962165
-387290947 -142461426
891227711 -493705752
778727982 823159433 899362766 983283434
-471786920 -48007905 391630272 173831488
691836515 -322631221
236211152 -699867976
-3...

output:

0
0
0
0
0
1
0
0
1
1
0
1
0
0
1
0
0
0
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
0
1
0
1
0
0
0
0
0
1
0
1
1
1
0
0
0
1
1
0
1
0
0
0
1
0
1
0
0
1
0
0
0
0
0
0
0
1
1
1
1
0
0
0
1
0
0
0
0
0
1
1
0
0
1
0
0
0
1
0
1
0
0
0
0
0
1
0
0
1
1
1
1
0
1
0
0
0
0
0
0
1
1
0
0
0
1
0
0
1
0
0
0
0
1
0
0
1
0
1
0
1
1
0
0
0
...

result:

ok 100000 numbers

Test #10:

score: 0
Accepted
time: 90ms
memory: 3684kb

input:

100000
-181176136 805743163
681211377 454376774
-599336611 988713965 638836024 -823748404
586086531 -490161233 251631822 782940218
-133888029 -524643413
74234642 -553290999
529774386 -533873706 -332098675 -998632604
-385146349 735035338 350005371 -412598775
960097976 -638412062
-819498858 -194166431...

output:

1
0
1
1
1
0
1
0
0
1
0
0
0
1
1
0
0
1
0
1
0
0
1
0
0
0
0
0
1
0
1
0
1
1
1
0
1
1
1
1
1
1
0
0
0
0
1
0
1
1
0
1
1
0
1
0
1
0
0
1
0
1
0
0
0
0
0
0
0
0
0
1
0
0
0
1
1
0
0
1
0
0
1
0
0
0
1
0
0
0
1
0
1
1
0
1
0
0
0
0
0
1
1
1
0
0
0
0
0
0
0
0
0
1
0
0
0
0
1
1
0
0
1
1
0
0
0
1
0
0
0
1
1
0
0
0
1
1
0
0
0
0
0
0
1
0
0
0
0
1
...

result:

ok 100000 numbers

Test #11:

score: 0
Accepted
time: 88ms
memory: 3576kb

input:

100000
469225525 -311553829
-592182543 -933496047
-268378634 -29674334 -225395842 -985852520
849173645 44424737 21402468 20842600
657571974 -906825400
-742758427 -266031450
228943287 455937953 783284681 724484066
-593473073 -776888715 603347764 -460971951
-528550773 -954192903
-170176161 68445323
76...

output:

1
1
0
0
1
1
1
0
1
0
0
0
0
0
1
1
1
0
0
1
0
1
1
0
1
0
1
1
1
0
0
0
0
1
1
1
0
1
1
1
0
0
1
0
0
0
0
1
1
0
1
0
1
0
0
0
1
0
0
0
0
1
1
0
0
1
0
0
0
1
1
0
0
0
0
0
0
1
0
1
1
0
0
0
1
1
1
0
1
1
1
1
1
0
0
0
0
1
0
0
0
0
0
0
1
0
0
1
1
1
0
0
1
0
0
1
1
1
1
1
1
0
0
1
1
0
1
0
1
1
0
1
0
1
0
1
1
0
1
1
0
1
0
0
0
0
1
0
1
0
...

result:

ok 100000 numbers

Test #12:

score: 0
Accepted
time: 90ms
memory: 3696kb

input:

100000
824659891 866116474
429390833 -564458658
-232387951 656970075 910372293 505198569
817293465 579010708 86140408 963777688
616007597 416025321
440248505 -325616697
-20010310 -311160598 -101331964 742568030
-506832502 -236935264 -848342550 -752434920
-850223901 435058963
825991332 574146868
-776...

output:

1
0
0
0
1
1
1
0
0
1
0
0
1
0
1
0
1
1
0
1
0
0
0
1
0
0
1
1
0
0
1
0
1
1
0
0
0
1
1
0
0
1
0
0
1
1
0
1
0
1
1
0
0
0
0
0
1
0
0
1
0
1
0
0
0
0
0
1
0
1
1
0
0
0
1
0
0
0
0
1
0
0
0
0
1
0
0
0
1
1
0
1
0
1
0
1
0
1
1
1
1
1
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...

result:

ok 100000 numbers

Test #13:

score: 0
Accepted
time: 87ms
memory: 3680kb

input:

100000
-181402541 -196228170
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823684584 -149364638 -913952210 833196798
62726516 -554264004
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963934566 206423874 688322091 -850621504
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262610...

output:

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...

result:

ok 100000 numbers

Test #14:

score: 0
Accepted
time: 90ms
memory: 3684kb

input:

100000
417121618 686474839
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-618261009 -204713255 855818437 -223868114
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251669466 -702843263
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output:

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...

result:

ok 100000 numbers

Test #15:

score: 0
Accepted
time: 91ms
memory: 3612kb

input:

100000
-932476723 -135854859
667869515 -985551488
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-567817000 -470579434 -510025830 566452559
519930927 686408603
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output:

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...

result:

ok 100000 numbers

Test #16:

score: 0
Accepted
time: 86ms
memory: 3744kb

input:

100000
-577042357 -958184557
-553646903 -616514099
-761325526 -719490759 -44979753 -210773060
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215...

output:

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...

result:

ok 100000 numbers

Test #17:

score: 0
Accepted
time: 85ms
memory: 3648kb

input:

100000
-516575284 219485746
172959179 -299354213
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output:

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...

result:

ok 100000 numbers

Test #18:

score: 0
Accepted
time: 91ms
memory: 3672kb

input:

100000
133826376 -897811246
-805467447 69683176
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output:

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...

result:

ok 100000 numbers

Test #19:

score: 0
Accepted
time: 90ms
memory: 3732kb

input:

100000
489260742 -15108237
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1...

output:

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...

result:

ok 100000 numbers

Test #20:

score: 0
Accepted
time: 91ms
memory: 3680kb

input:

100000
-617247806 -542470641
699622219 998970243
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5702...

output:

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...

result:

ok 100000 numbers

Test #21:

score: 0
Accepted
time: 92ms
memory: 3700kb

input:

100000
-261813440 340232368
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...

output:

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...

result:

ok 100000 numbers

Test #22:

score: 0
Accepted
time: 92ms
memory: 3616kb

input:

100000
-201346367 -482097330
742768969 -19865188
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767936371 -65390910 -337906780 -987608637
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-5...

output:

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...

result:

ok 100000 numbers

Test #23:

score: 0
Accepted
time: 82ms
memory: 3696kb

input:

100000
889700307 83152852
81040013 -449413311
374958682 300600303 -247400099 -855076598
-624900532 -785317715 857266066 -410224840
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7...

output:

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...

result:

ok 100000 numbers

Test #24:

score: 0
Accepted
time: 27ms
memory: 3684kb

input:

45369
0 0
0 -1
999999997 999999997 -999999997 -999999998
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0 0
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0 0
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-999999997 -999999997 999999997 999999998
0 0
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99999...

output:

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...

result:

ok 45369 numbers

Test #25:

score: -100
Wrong Answer
time: 53ms
memory: 3624kb

input:

100000
-1 -1
0 -2
2 1 0 0
-1 1 1 -1
-2 -1
-2 -1
0 -1 -1 0
2 2 0 -2
0 2
1 -2
0 -2 -2 0
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0 2
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-2 0 2 1
1 2 1 0
1 0
1 -1
0 -1 2 0
2 2 1 2
2 1
0 0
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-1 1 -1 2
0 0
2 1
2 -2 -2 1
-2 -2 1 -2
-1 -1
1 2
-2 -2 0 1
-2 1 -1 -2
-2 1
-1 1
-1 2 2 0
-1 2 -2 -2
0 2
0 1
1 -2 1 0
1 1 0 0
2 1
1 -2
...

output:

0
0
1
1
1
0
0
0
1
0
1
0
0
0
0
0
1
0
0
0
0
1
0
0
1
1
1
0
0
0
0
0
0
0
0
0
0
0
1
0
0
1
1
1
0
0
1
0
0
0
0
0
1
0
0
0
0
1
0
1
1
1
0
1
0
0
1
1
0
1
1
1
1
0
1
0
0
0
1
1
0
0
0
0
1
0
1
0
1
1
1
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
1
0
1
0
0
0
0
0
0
1
0
0
1
1
0
0
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
1
0
0
...

result:

wrong answer 12th numbers differ - expected: '1', found: '0'