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 |
|---|---|---|---|---|---|---|---|---|---|
| #180302 | #3448. Tomosynthesis | rootcucu | WA | 0ms | 4340kb | C++17 | 1.3kb | 2023-09-15 17:57:27 | 2023-09-15 17:57:27 |
Judging History
answer
#include <iostream>
#include <algorithm>
#include <vector>
#include <cmath>
using namespace std;
const double PI = acos(-1);
struct cyl {
double cx;
double cy;
double radii;
};
vector<pair<double,double>> vec_dup;
void f(cyl cyl1, cyl cyl2){
auto [cx1,cy1,r1] = cyl1;
auto [cx2,cy2,r2] = cyl2;
double rad_centers = atan2(cy2-cy1,cx2-cx1);
double rad_tan = asin((r1+r2)/hypot(cy2-cy1,cx2-cx1));
double rad1 = rad_centers - rad_tan - 2*PI;
for (int i = 0; i < 8; i++){
vec_dup.push_back({rad1,rad1 + 2*rad_tan});
rad1 += PI;
}
}
int main(void){
ios::sync_with_stdio(0); cin.tie(0);
cout << fixed;
cout.precision(12);
int n; cin >> n;
vector<cyl> vec(n);
for (auto &[cx,cy,radii]: vec)
cin >> cx >> cy >> radii;
for (int i = 0; i < n; i++){
for (int j = i+1; j < n; j++){
f(vec[i], vec[j]);
}
}
double ans = -1;
sort(vec_dup.begin(), vec_dup.end());
double dup = PI;
double sep = PI;
for (auto [rad1,rad2] : vec_dup){
if (rad1 > dup){
ans = max(ans, rad1 - dup);
}
dup = rad2;
}
if (ans < 0)
cout << "0\n";
else
cout << ans << "\n";
}
詳細信息
Test #1:
score: 100
Accepted
time: 0ms
memory: 4244kb
input:
3 -1 -1 0.5 1 -1 0.25 1 1 1
output:
0.511268019362
result:
ok found '0.511268019', expected '0.511268019', error '0.000000000'
Test #2:
score: 0
Accepted
time: 0ms
memory: 4308kb
input:
2 0 0 1 2 2 1
output:
1.570796326795
result:
ok found '1.570796327', expected '1.570796327', error '0.000000000'
Test #3:
score: 0
Accepted
time: 0ms
memory: 4276kb
input:
3 -1.00000000 -1.00000000 0.99999900 1.00000000 -1.00000000 0.99999900 0.00000000 1.00000000 0.10000000
output:
0
result:
ok found '0.000000000', expected '0.000000000', error '-0.000000000'
Test #4:
score: 0
Accepted
time: 0ms
memory: 4316kb
input:
3 -1.00000000 -1.00000000 0.00000100 1.00000000 -1.00000000 0.00000100 0.00000000 1.00000000 0.00000100
output:
1.107146823367
result:
ok found '1.107146823', expected '1.107146823', error '0.000000000'
Test #5:
score: 0
Accepted
time: 0ms
memory: 4032kb
input:
2 -1.00000000 0.00000000 0.70710678 1.00000000 0.00000000 0.70710678
output:
1.570796330151
result:
ok found '1.570796330', expected '1.570796330', error '0.000000000'
Test #6:
score: 0
Accepted
time: 0ms
memory: 4276kb
input:
2 0.00000000 0.00000000 0.50000000 1.00000000 1.00000000 0.50000000
output:
1.570796326795
result:
ok found '1.570796327', expected '1.570796327', error '0.000000000'
Test #7:
score: 0
Accepted
time: 0ms
memory: 4284kb
input:
2 0.00000000 0.00000000 0.50000000 -10.00000000 10.00000000 0.50000000
output:
3.000053180265
result:
ok found '3.000053180', expected '3.000053180', error '0.000000000'
Test #8:
score: 0
Accepted
time: 0ms
memory: 4232kb
input:
2 0.00000000 0.00000000 0.50000000 10.50000000 -10.50000000 0.50000000
output:
3.006803635086
result:
ok found '3.006803635', expected '3.006803635', error '0.000000000'
Test #9:
score: 0
Accepted
time: 0ms
memory: 4312kb
input:
2 0.00000000 0.00000000 0.50000000 -999.99000000 -999.99000000 0.50000000
output:
3.140178425767
result:
ok found '3.140178426', expected '3.140178426', error '0.000000000'
Test #10:
score: 0
Accepted
time: 0ms
memory: 3972kb
input:
2 -1000.00000000 0.00000000 0.00100000 1000.00000000 0.00000000 0.00100000
output:
3.141590653590
result:
ok found '3.141590654', expected '3.141590654', error '0.000000000'
Test #11:
score: -100
Wrong Answer
time: 0ms
memory: 4340kb
input:
3 1000.00000000 0.00000000 1000.00000000 -0.10000000 0.00000000 0.00100000 0.00000000 2.00000000 0.00100000
output:
0.048373856735
result:
wrong answer 1st numbers differ - expected: '0.0028284', found: '0.0483739', error = '0.0455454'