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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
#270996#5433. Absolute Differenceship2077WA 34ms14292kbC++142.7kb2023-12-01 19:53:282023-12-01 19:53:28

Judging History

你现在查看的是最新测评结果

  • [2023-12-01 19:53:28]
  • 评测
  • 测评结果:WA
  • 用时:34ms
  • 内存:14292kb
  • [2023-12-01 19:53:28]
  • 提交

answer

#include<bits/stdc++.h>
#define x first
#define y second
using namespace std;
typedef long double ld;
constexpr int M=4e5+5;
int n,m,num,suma,sumb,f[M],g[M],lsh[M];
pair<int,int>a[M],b[M];
ld ans,len,sum,coef,pre1[M],pre2[M];
int read(){
	int x=0,f=1;char ch=getchar();
	while (!isdigit(ch)) {if (ch=='-') f=-1;ch=getchar();}
	while (isdigit(ch)) x=x*10+ch-48,ch=getchar();
	return x*f;
}
ld Calc(ld len){return (ld)len*coef*len*len/3.0;}
void subtask1(){ len=n*m;
	for (int i=1;i<=m;i++) sum+=b[i].x/len;
	for (int i=1,j=0;i<=n;i++){
		while (j<m&&b[j+1].x<=a[i].x)
			sum-=b[++j].x*2/len;
		ans+=a[i].x*(j*2-m)/len+sum;
	}
	printf("%.15Lf\n",ans);
}
void subtask2(){
	if (suma) swap(n,m),swap(a,b),swap(suma,sumb); coef=(ld)1/n/sumb;
	for (int i=1;i<=n;i++) lsh[++num]=a[i].x;
	for (int i=1;i<=m;i++) lsh[++num]=b[i].x,lsh[++num]=b[i].y;
	sort(lsh+1,lsh+num+1);num=unique(lsh+1,lsh+num+1)-lsh-1;
	for (int i=1;i<=n;i++) f[lower_bound(lsh+1,lsh+num+1,a[i].x)-lsh]=1;
	for (int i=1;i<=m;i++)
		g[lower_bound(lsh+1,lsh+num+1,b[i].x)-lsh]++,
		g[lower_bound(lsh+1,lsh+num+1,b[i].y)-lsh]--;
	for (int i=1;i<=num;i++) g[i]+=g[i-1];
	for (int i=1;i<=num;i++)
		if (!f[i]) pre1[i]=pre1[i-1],pre2[i]=pre2[i-1];
		else pre1[i]=pre1[i-1]+lsh[i]*coef,
			 pre2[i]=pre2[i-1]+coef;
	for (int i=1;i<=num;i++)
		if (g[i])
			ans+=(lsh[i+1]*lsh[i+1]-lsh[i]*lsh[i])*(pre2[i]-pre2[num]*0.5)
			  +(-pre1[i]+(pre1[num]-pre1[i]))*(lsh[i+1]-lsh[i]);
	printf("%.15Lf\n",ans);
}
void subtask3(){ coef=(ld)1/suma/sumb;
	for (int i=1;i<=n;i++) lsh[++num]=a[i].x,lsh[++num]=a[i].y;
	for (int i=1;i<=m;i++) lsh[++num]=b[i].x,lsh[++num]=b[i].y;
	sort(lsh+1,lsh+num+1);num=unique(lsh+1,lsh+num+1)-lsh-1;
	for (int i=1;i<=n;i++)
		f[lower_bound(lsh+1,lsh+num+1,a[i].x)-lsh]++,
		f[lower_bound(lsh+1,lsh+num+1,a[i].y)-lsh]--;
	for (int i=1;i<=m;i++)
		g[lower_bound(lsh+1,lsh+num+1,b[i].x)-lsh]++,
		g[lower_bound(lsh+1,lsh+num+1,b[i].y)-lsh]--;
	for (int i=1;i<=num;i++) f[i]+=f[i-1],g[i]+=g[i-1];
	for (int i=1;i<=num;i++)
		if (!g[i]) pre1[i]=pre1[i-1],pre2[i]=pre2[i-1];
		else pre1[i]=pre1[i-1]+(ld)(lsh[i]-lsh[i+1])*(lsh[i]+lsh[i+1])*coef,
			 pre2[i]=pre2[i-1]+(ld)(lsh[i+1]-lsh[i])*coef;
	for (int i=1;i<=num;i++) if (f[i])
		ans+=(-pre1[num]+pre1[i]+pre1[i-1]+(-pre2[num]+pre2[i]+pre2[i-1])*(lsh[i]+lsh[i+1]))*(lsh[i+1]-lsh[i])*0.5;
	for (int i=1;i<=num;i++)
		if (f[i]&&g[i]) ans+=Calc(lsh[i+1]-lsh[i]);
	printf("%.15Lf\n",ans);
}
int main(){
	n=read();m=read();
	for (int i=1;i<=n;i++) a[i]={read(),read()},suma+=a[i].y-a[i].x;
	for (int i=1;i<=m;i++) b[i]={read(),read()},sumb+=b[i].y-b[i].x;
	sort(a+1,a+n+1);sort(b+1,b+m+1);
	if (!suma&&!sumb) return subtask1(),0;
	if (!suma||!sumb) return subtask2(),0;
	return subtask3(),0;
}

詳細信息

Test #1:

score: 100
Accepted
time: 1ms
memory: 3876kb

input:

1 1
0 1
0 1

output:

0.333333333333333

result:

ok found '0.333333333', expected '0.333333333', error '0.000000000'

Test #2:

score: 0
Accepted
time: 0ms
memory: 9860kb

input:

1 1
0 1
1 1

output:

0.500000000000000

result:

ok found '0.500000000', expected '0.500000000', error '0.000000000'

Test #3:

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

input:

1 1
-1000000000 1000000000
-1000000000 1000000000

output:

666666666.666666666686069

result:

ok found '666666666.666666627', expected '666666666.666666627', error '0.000000000'

Test #4:

score: 0
Accepted
time: 0ms
memory: 3756kb

input:

1 1
-1000000000 0
0 1000000000

output:

1000000000.000000000000000

result:

ok found '1000000000.000000000', expected '1000000000.000000000', error '0.000000000'

Test #5:

score: 0
Accepted
time: 1ms
memory: 3752kb

input:

1 1
-1000000000 -1000000000
-1000000000 1000000000

output:

1000000000.000000000000000

result:

ok found '1000000000.000000000', expected '1000000000.000000000', error '0.000000000'

Test #6:

score: 0
Accepted
time: 0ms
memory: 9960kb

input:

1 1
-999999999 1000000000
-1000000000 -1000000000

output:

1000000000.500000000000000

result:

ok found '1000000000.500000000', expected '1000000000.500000000', error '0.000000000'

Test #7:

score: 0
Accepted
time: 0ms
memory: 9992kb

input:

1 1
-1000000000 1000000000
-999999999 -999999999

output:

999999999.000000000465661

result:

ok found '999999999.000000000', expected '999999999.000000000', error '0.000000000'

Test #8:

score: 0
Accepted
time: 0ms
memory: 3524kb

input:

1 1
1000000000 1000000000
-1000000000 -1000000000

output:

2000000000.000000000000000

result:

ok found '2000000000.000000000', expected '2000000000.000000000', error '0.000000000'

Test #9:

score: 0
Accepted
time: 0ms
memory: 3792kb

input:

1000 1000
-2175 -2174
-1068 -1065
-1721 -1718
777 834
1162 1169
-3529 -3524
3966 3993
1934 1952
-234 -223
-4967 -4947
8500 8510
5272 5276
-6048 -6033
-34 -22
700 705
-7890 -7886
5538 5543
4114 4126
-9201 -9162
-1521 -1519
-5103 -5100
439 441
993 997
-1684 -1680
-8413 -8404
6724 6728
-3242 -3239
2616...

output:

6717.117145739453809

result:

ok found '6717.117145739', expected '6717.117145739', error '0.000000000'

Test #10:

score: 0
Accepted
time: 2ms
memory: 10240kb

input:

1000 1000
-5010 -4999
-2128 -2113
-5798 -5765
705 713
-3956 -3938
-5308 -5307
6759 6772
-772 -770
-860 -859
2308 2323
-5500 -5500
5140 5177
-6747 -6733
7509 7511
8864 8870
-6382 -6374
1901 1904
-5763 -5760
3019 3027
2962 2963
-314 -301
-222 -203
-726 -724
-62 -58
-1203 -1195
-5216 -5215
-4298 -4292
...

output:

6682.581127471435689

result:

ok found '6682.581127471', expected '6682.581127471', error '0.000000000'

Test #11:

score: 0
Accepted
time: 1ms
memory: 3924kb

input:

1000 1000
770 770
5869 5869
-8786 -8786
7549 7549
-4165 -4165
4023 4023
-9779 -9779
7797 7797
1105 1105
508 508
7653 7653
-359 -359
9393 9393
-9363 -9363
-4160 -4160
-3682 -3682
9409 9409
-8548 -8548
-9908 -9908
-7494 -7494
3751 3751
2326 2326
-3311 -3311
3651 3651
-7663 -7663
5376 5376
-7071 -7071
...

output:

6673.756816891039108

result:

ok found '6673.756816891', expected '6673.756816891', error '0.000000000'

Test #12:

score: 0
Accepted
time: 1ms
memory: 3620kb

input:

1000 1000
-735 -735
-829 -829
-6376 -6376
8558 8558
155 155
5533 5533
8800 8800
-1738 -1738
919 919
52 52
2076 2076
-6911 -6911
139 139
6733 6733
9923 9923
-4619 -4619
-9429 -9429
9902 9902
-5984 -5984
2580 2580
8738 8738
7960 7960
3388 3388
-2689 -2689
7986 7986
2565 2565
-8908 -8908
9359 9359
-434...

output:

6479.384680000000002

result:

ok found '6479.384680000', expected '6479.384680000', error '0.000000000'

Test #13:

score: 0
Accepted
time: 4ms
memory: 4672kb

input:

100 10000
82274 82408
61583 61902
-54304 -54007
-48488 -48316
-92517 -91939
85001 85160
33086 33374
36458 36573
-15785 -11838
93971 94863
50496 53064
-68609 -68302
-91873 -91176
-96937 -96753
9481 9976
83600 83691
17742 18693
55685 56039
56323 57845
88761 90277
22886 23642
30848 31047
-34662 -33470
...

output:

65016.298634797615470

result:

ok found '65016.298634798', expected '65016.298634798', error '0.000000000'

Test #14:

score: 0
Accepted
time: 6ms
memory: 10424kb

input:

100 10000
-89227 -88897
-70959 -68913
-60233 -59597
81753 81820
96806 97104
-58324 -57553
-38857 -37087
-81344 -81311
22701 22890
-68517 -66298
-19753 -19047
-80409 -79437
6355 7569
-13999 -12586
-84981 -82448
-29865 -29624
-76088 -75272
70697 72265
85493 86097
82574 84418
-8937 -8079
-92387 -90609
...

output:

65683.869707087889537

result:

ok found '65683.869707088', expected '65683.869707088', error '0.000000000'

Test #15:

score: 0
Accepted
time: 3ms
memory: 4268kb

input:

10000 100
-57904 -57904
21152 21152
60543 60543
50109 50109
-79601 -79601
-22525 -22525
28423 28423
48296 48296
-71861 -71861
-72518 -72518
-83776 -83776
77745 77745
21894 21894
-32330 -32330
82508 82508
63261 63261
-5358 -5358
3672 3672
12238 12238
-84298 -84298
-7608 -7608
3472 3472
17602 17602
56...

output:

67565.835344673240833

result:

ok found '67565.835344673', expected '67565.835344673', error '0.000000000'

Test #16:

score: 0
Accepted
time: 1ms
memory: 3812kb

input:

10000 100
30397 30397
62144 62144
53466 53466
-85377 -85377
-36472 -36472
-11689 -11689
18989 18989
85562 85562
-90083 -90083
51219 51219
19436 19436
-51762 -51762
28774 28774
10705 10705
83520 83520
11659 11659
-44907 -44907
62858 62858
69493 69493
59094 59094
9273 9273
-83311 -83311
94463 94463
50...

output:

68329.270489999999931

result:

ok found '68329.270490000', expected '68329.270490000', error '0.000000000'

Test #17:

score: 0
Accepted
time: 32ms
memory: 12784kb

input:

10 100000
-869747 -830724
-788440 -670325
117115 196471
908542 968596
650801 749354
370395 516964
-501924 -184650
-948338 -936663
-95487 58170
541118 558043
-159087 -159083
32299 32305
-973981 -973976
301160 301166
-865954 -865952
-213982 -213982
28063 28063
206739 206748
546600 546610
-387875 -3878...

output:

634086.603017421467257

result:

ok found '634086.603017421', expected '634086.603017422', error '0.000000000'

Test #18:

score: 0
Accepted
time: 17ms
memory: 14292kb

input:

10 100000
934221 971862
-251602 -152935
105813 259309
-301967 -290235
-763282 -744289
445844 475617
-144934 4340
359403 385458
262854 351832
-710665 -692937
820128 820128
436541 436541
-25819 -25819
252335 252335
958484 958484
652451 652451
678026 678026
-439346 -439346
279913 279913
544864 544864
7...

output:

565818.115295723062616

result:

ok found '565818.115295723', expected '565818.115295723', error '0.000000000'

Test #19:

score: 0
Accepted
time: 19ms
memory: 8696kb

input:

100000 10
-103700 -103700
83578 83578
-898202 -898202
-685097 -685097
-213656 -213656
-145735 -145735
898557 898557
4286 4286
-48010 -48010
70529 70529
734485 734485
239485 239485
-703231 -703231
-378710 -378710
596807 596807
421467 421467
-634867 -634867
813096 813096
-285744 -285744
496159 496159
...

output:

666656.311518360122875

result:

ok found '666656.311518360', expected '666656.311518360', error '0.000000000'

Test #20:

score: 0
Accepted
time: 7ms
memory: 4504kb

input:

100000 10
-522243 -522243
521529 521529
-80533 -80533
-13186 -13186
359930 359930
905205 905205
351967 351967
109916 109916
-331194 -331194
75817 75817
-696842 -696842
459057 459057
818912 818912
-865118 -865118
367903 367903
-947033 -947033
-611435 -611435
821124 821124
365222 365222
930370 930370
...

output:

664350.583891999987372

result:

ok found '664350.583892000', expected '664350.583892000', error '0.000000000'

Test #21:

score: 0
Accepted
time: 29ms
memory: 13012kb

input:

1000 100000
695517 695542
-92873 -92540
-441175 -440798
-262307 -262125
989370 989445
774599 776116
217889 218976
659321 659370
-985037 -984536
-937583 -936702
628123 629430
262516 264589
-567533 -567069
-800526 -799506
-551243 -550516
-446500 -445987
412624 412671
371916 372698
-148417 -148284
2092...

output:

665300.559994430676966

result:

ok found '665300.559994431', expected '665300.559994431', error '0.000000000'

Test #22:

score: 0
Accepted
time: 15ms
memory: 14236kb

input:

1000 100000
-605982 -605323
195847 196363
875269 875399
-182475 -179217
-395130 -394436
-707687 -703082
-814686 -814456
920351 920781
-510710 -510701
229860 233190
941364 941443
-993499 -991461
-587971 -586522
691331 692227
45472 45979
-522484 -522117
78182 78611
-238995 -238044
-49808 -49344
-29114...

output:

668400.718242815115389

result:

ok found '668400.718242815', expected '668400.718242815', error '0.000000000'

Test #23:

score: 0
Accepted
time: 20ms
memory: 9036kb

input:

100000 1000
-84555 -84555
-209614 -209614
578710 578710
293747 293747
-392909 -392909
692522 692522
873711 873711
-583901 -583901
213005 213005
-571924 -571924
-722718 -722718
-891567 -891567
259485 259485
397260 397260
-747747 -747747
-337960 -337960
159321 159321
509738 509738
793913 793913
-52712...

output:

663117.410865557456191

result:

ok found '663117.410865557', expected '663117.410865557', error '0.000000000'

Test #24:

score: 0
Accepted
time: 11ms
memory: 4528kb

input:

100000 1000
304051 304051
78396 78396
-11701 -11701
-801884 -801884
-741998 -741998
-985640 -985640
-97919 -97919
894765 894765
-906691 -906691
-757850 -757850
-704383 -704383
244583 244583
471782 471782
242647 242647
-719813 -719813
964046 964046
474988 474988
366664 366664
633242 633242
-417257 -4...

output:

663832.346312859998648

result:

ok found '663832.346312860', expected '663832.346312860', error '0.000000000'

Test #25:

score: 0
Accepted
time: 34ms
memory: 13088kb

input:

1000 100000
467226835 467360234
604952571 606299210
-423495990 -423165079
618010698 618654029
-299509407 -299372648
-520448933 -518514096
-630670309 -629638113
-297348099 -297274069
358382111 359372190
79026840 79733202
553842555 554500003
-812340207 -812186633
-121972281 -120998067
-273770987 -2735...

output:

667770120.512301248498261

result:

ok found '667770120.512301207', expected '667770120.512301207', error '0.000000000'

Test #26:

score: -100
Wrong Answer
time: 17ms
memory: 14236kb

input:

1000 100000
400464424 401349233
812671839 812758217
-917750835 -917655369
843983440 844077178
61954165 62176453
-242975491 -241583879
-210111097 -208052980
-408749021 -408403973
-108891757 -108047513
-979374362 -978728953
-532799240 -528498877
551774491 552188984
771464515 771799584
334255133 336287...

output:

334780394.264729244285263

result:

wrong answer 1st numbers differ - expected: '667872950.0625871', found: '334780394.2647293', error = '0.4987364'