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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 |
|---|---|---|---|---|---|---|---|---|---|
| #206239 | #5151. Bottle Flip | willow# | AC ✓ | 1ms | 4144kb | C++17 | 843b | 2023-10-07 19:36:02 | 2023-10-07 19:36:03 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
const __float128 eps = 1e-15;
__float128 one = 1;
int Dcmp(__float128 x) {
return x < -eps ? -1 : x > eps ? 1 : 0;
}
int h, r, da, dw;
__float128 Calc(__float128 H) {
return (one * H * H / 2 * dw + one * (H + h) / 2 * da * (h - H)) / (one * H * dw + one * (h - H) * da);
}
int main() {
scanf("%d%d%d%d", &h, &r, &da, &dw);
// printf("%.15Lf\n", (-2. * h + sqrtl(4. * h * h + 4. * h * h * (dw - da))) / (2. * (dw - da)));
__float128 hl = 0, hr = h;
for(int T = 1; T <= 200; ++ T) {
__float128 lmid = hl + (hr - hl) / 3, rmid = hr - (hr - hl) / 3;
// if(Dcmp(Calc(lmid) - Calc(rmid)) > 0)
if(Calc(lmid) > Calc(rmid))
hl = lmid;
else
hr = rmid;
}
printf("%.15Lf\n", (long double)hl);
}
详细
Test #1:
score: 100
Accepted
time: 1ms
memory: 4116kb
input:
22 4 1 4
output:
7.333333333333333
result:
ok found '7.3333333', expected '7.3333333', error '0.0000000'
Test #2:
score: 0
Accepted
time: 0ms
memory: 3908kb
input:
7 2 655 988
output:
3.141594172020043
result:
ok found '3.1415942', expected '3.1415942', error '0.0000000'
Test #3:
score: 0
Accepted
time: 1ms
memory: 3824kb
input:
1 1 1 2
output:
0.414213562373095
result:
ok found '0.4142136', expected '0.4142136', error '0.0000000'
Test #4:
score: 0
Accepted
time: 1ms
memory: 3808kb
input:
1000 1000 999 1000
output:
499.874937460909905
result:
ok found '499.8749375', expected '499.8749375', error '0.0000000'
Test #5:
score: 0
Accepted
time: 1ms
memory: 3876kb
input:
1000 1000 1 1000
output:
30.653430031715508
result:
ok found '30.6534300', expected '30.6534300', error '0.0000000'
Test #6:
score: 0
Accepted
time: 0ms
memory: 3876kb
input:
1 1000 1 1000
output:
0.030653430031716
result:
ok found '0.0306534', expected '0.0306534', error '0.0000000'
Test #7:
score: 0
Accepted
time: 0ms
memory: 3932kb
input:
1000 1000 482 483
output:
499.740932572936783
result:
ok found '499.7409326', expected '499.7409326', error '0.0000000'
Test #8:
score: 0
Accepted
time: 0ms
memory: 3808kb
input:
1 1000 482 483
output:
0.499740932572937
result:
ok found '0.4997409', expected '0.4997409', error '0.0000000'
Test #9:
score: 0
Accepted
time: 0ms
memory: 4144kb
input:
1 1000 1 2
output:
0.414213562373095
result:
ok found '0.4142136', expected '0.4142136', error '0.0000000'
Test #10:
score: 0
Accepted
time: 0ms
memory: 4084kb
input:
1000 1000 1 2
output:
414.213562373095037
result:
ok found '414.2135624', expected '414.2135624', error '0.0000000'
Test #11:
score: 0
Accepted
time: 0ms
memory: 4120kb
input:
961 1000 979 983
output:
480.010193170954147
result:
ok found '480.0101932', expected '480.0101932', error '0.0000000'
Test #12:
score: 0
Accepted
time: 0ms
memory: 3820kb
input:
997 1000 977 983
output:
497.736988008349539
result:
ok found '497.7369880', expected '497.7369880', error '0.0000000'
Test #13:
score: 0
Accepted
time: 0ms
memory: 3932kb
input:
1 928 1 66
output:
0.109600590840553
result:
ok found '0.1096006', expected '0.1096006', error '0.0000000'
Test #14:
score: 0
Accepted
time: 0ms
memory: 3928kb
input:
1 928 2 88
output:
0.131005804202577
result:
ok found '0.1310058', expected '0.1310058', error '0.0000000'
Test #15:
score: 0
Accepted
time: 0ms
memory: 4112kb
input:
1 928 3 74
output:
0.167600907404948
result:
ok found '0.1676009', expected '0.1676009', error '0.0000000'
Test #16:
score: 0
Accepted
time: 0ms
memory: 4124kb
input:
1 928 3 41
output:
0.212908855431827
result:
ok found '0.2129089', expected '0.2129089', error '0.0000000'
Test #17:
score: 0
Accepted
time: 0ms
memory: 3872kb
input:
1 928 1 12
output:
0.224009237739796
result:
ok found '0.2240092', expected '0.2240092', error '0.0000000'
Test #18:
score: 0
Accepted
time: 0ms
memory: 3820kb
input:
2 928 89 93
output:
0.989009661675423
result:
ok found '0.9890097', expected '0.9890097', error '0.0000000'
Test #19:
score: 0
Accepted
time: 0ms
memory: 3812kb
input:
7 928 51 72
output:
3.199009876724156
result:
ok found '3.1990099', expected '3.1990099', error '0.0000000'
Test #20:
score: 0
Accepted
time: 0ms
memory: 3912kb
input:
722 547 709 752
output:
355.686391819275643
result:
ok found '355.6863918', expected '355.6863918', error '0.0000000'
Test #21:
score: 0
Accepted
time: 0ms
memory: 3820kb
input:
242 742 518 920
output:
103.742903461123859
result:
ok found '103.7429035', expected '103.7429035', error '0.0000000'
Test #22:
score: 0
Accepted
time: 0ms
memory: 3964kb
input:
873 701 43 201
output:
276.087555847830570
result:
ok found '276.0875558', expected '276.0875558', error '0.0000000'
Test #23:
score: 0
Accepted
time: 0ms
memory: 4000kb
input:
268 228 527 562
output:
131.846091936330262
result:
ok found '131.8460919', expected '131.8460919', error '0.0000000'
Test #24:
score: 0
Accepted
time: 0ms
memory: 3952kb
input:
312 558 341 839
output:
121.468385077943421
result:
ok found '121.4683851', expected '121.4683851', error '0.0000000'
Test #25:
score: 0
Accepted
time: 0ms
memory: 4108kb
input:
274 85 178 364
output:
112.756490692064425
result:
ok found '112.7564907', expected '112.7564907', error '0.0000000'
Test #26:
score: 0
Accepted
time: 0ms
memory: 3780kb
input:
641 539 341 977
output:
238.054438740428237
result:
ok found '238.0544387', expected '238.0544387', error '0.0000000'
Test #27:
score: 0
Accepted
time: 0ms
memory: 3940kb
input:
245 861 438 872
output:
101.618383921872925
result:
ok found '101.6183839', expected '101.6183839', error '0.0000000'
Test #28:
score: 0
Accepted
time: 0ms
memory: 4000kb
input:
640 181 156 606
output:
215.419834890887064
result:
ok found '215.4198349', expected '215.4198349', error '0.0000000'