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QOJ
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 Difference | ship2077 | WA | 34ms | 14292kb | C++14 | 2.7kb | 2023-12-01 19:53:28 | 2023-12-01 19:53:28 |
Judging History
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'