QOJ.ac
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 |
|---|---|---|---|---|---|---|---|---|---|
| #864427 | #9855. Glass Bead Game | ZhenLiu# | AC ✓ | 1ms | 3968kb | C++14 | 422b | 2025-01-20 16:28:07 | 2025-01-20 16:28:07 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
int main(){
int n;
cin >> n;
vector<double> p(n + 1);
for(int i = 1; i <= n; ++i){
cin >> p[i];
}
double ans = 0;
for(int i = 1; i <= n; ++i){
for(int j = i + 1; j <= n; ++j){
ans += 2.0 * (p[i]*p[j])/(p[i] + p[j]);
}
}
printf("%.6lf", ans);
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 0ms
memory: 3968kb
input:
2 0.500000 0.500000
output:
0.500000
result:
ok found '0.5000000', expected '0.5000000', error '0.0000000'
Test #2:
score: 0
Accepted
time: 0ms
memory: 3968kb
input:
3 0.500000 0.250000 0.250000
output:
0.916667
result:
ok found '0.9166670', expected '0.9166667', error '0.0000003'
Test #3:
score: 0
Accepted
time: 0ms
memory: 3968kb
input:
1 1.000000
output:
0.000000
result:
ok found '0.0000000', expected '0.0000000', error '-0.0000000'
Test #4:
score: 0
Accepted
time: 0ms
memory: 3840kb
input:
2 0.538027 0.461973
output:
0.497108
result:
ok found '0.4971080', expected '0.4971079', error '0.0000001'
Test #5:
score: 0
Accepted
time: 0ms
memory: 3840kb
input:
3 0.494273 0.190517 0.315210
output:
0.897453
result:
ok found '0.8974530', expected '0.8974534', error '0.0000004'
Test #6:
score: 0
Accepted
time: 0ms
memory: 3968kb
input:
4 0.197261 0.087416 0.104439 0.610884
output:
0.982439
result:
ok found '0.9824390', expected '0.9824393', error '0.0000003'
Test #7:
score: 0
Accepted
time: 0ms
memory: 3840kb
input:
5 0.306241 0.077563 0.409216 0.059593 0.147387
output:
1.477937
result:
ok found '1.4779370', expected '1.4779375', error '0.0000003'
Test #8:
score: 0
Accepted
time: 1ms
memory: 3968kb
input:
10 0.036869 0.154271 0.039121 0.093444 0.015092 0.006355 0.260004 0.159292 0.185205 0.050347
output:
3.023966
result:
ok found '3.0239660', expected '3.0239658', error '0.0000001'
Test #9:
score: 0
Accepted
time: 0ms
memory: 3840kb
input:
15 0.037256 0.092021 0.010070 0.032228 0.117466 0.004701 0.055551 0.001236 0.187293 0.055711 0.207971 0.004382 0.105521 0.088092 0.000501
output:
4.096973
result:
ok found '4.0969730', expected '4.0969732', error '0.0000001'
Test #10:
score: 0
Accepted
time: 0ms
memory: 3968kb
input:
30 0.039333 0.083460 0.009475 0.008942 0.003020 0.037578 0.045489 0.029958 0.001444 0.044862 0.016973 0.049030 0.034943 0.002248 0.026105 0.020958 0.076519 0.058296 0.035587 0.011935 0.024676 0.006303 0.048558 0.000584 0.014267 0.056606 0.002034 0.087229 0.064801 0.058787
output:
10.296744
result:
ok found '10.2967440', expected '10.2967443', error '0.0000000'
Test #11:
score: 0
Accepted
time: 0ms
memory: 3968kb
input:
50 0.001021 0.008859 0.000217 0.009289 0.006963 0.018732 0.007280 0.047461 0.012470 0.028122 0.005435 0.012979 0.015871 0.003407 0.020872 0.037227 0.000613 0.043340 0.018878 0.008492 0.021150 0.020627 0.023751 0.012367 0.029199 0.037501 0.085723 0.001351 0.023855 0.015958 0.007456 0.012490 0.034241 ...
output:
17.219740
result:
ok found '17.2197400', expected '17.2197397', error '0.0000000'
Test #12:
score: 0
Accepted
time: 0ms
memory: 3968kb
input:
100 0.001579 0.004926 0.003032 0.000846 0.000350 0.019884 0.009544 0.015217 0.005413 0.018294 0.000776 0.021315 0.001224 0.040895 0.012111 0.008854 0.019986 0.011898 0.007226 0.015722 0.030665 0.002735 0.016657 0.002375 0.009279 0.027049 0.009811 0.014709 0.004331 0.003090 0.007980 0.001159 0.000640...
output:
33.990410
result:
ok found '33.9904100', expected '33.9904097', error '0.0000000'
Extra Test:
score: 0
Extra Test Passed