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QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #859293 | #9668. Isoball: 2D Version | shiyahahaya | WA | 17ms | 3968kb | C++20 | 4.5kb | 2025-01-17 17:06:12 | 2025-01-17 17:06:13 |
Judging History
answer
#include <iostream>
#include <math.h>
#include <numbers>
using namespace std;
long double PI = std::numbers::pi;
long double xo, yo, r, vx, vy, ix1, iy1, ix2, iy2;
struct place
{
long double px;
long double py;
};
/*
long double trans(place O, place A)
{
long double tana = (A.py - O.py) / (A.px - O.px);
if (A.px >= 0 && A.py >= 0)
{
return atan(tana);
}
else if (A.px < 0 && A.py <= 0)
{
return PI + atan(tana);
}
else if (A.px <= 0 && A.py >= 0)
{
return PI + atan(tana);
}
else if (A.px >= 0 && A.py <= 0)
{
return 2 * PI + atan(tana);
}
return atan(tana);
}*/
long double trans(place O, place A)
{
double tana = (A.py - O.py) / (A.px - O.px);
if (A.px - O.px >= 0 && A.py - O.py >= 0)
{
return atan(tana);
}
else if (A.px - O.px < 0 && A.py - O.py <= 0)
{
return PI + atan(tana);
}
else if (A.px - O.px <= 0 && A.py - O.py >= 0)
{
return PI +atan(tana);
}
else if (A.px - O.px >= 0 && A.py - O.py <= 0)
{
return 2 * PI + atan(tana);
}
return atan(tana);
}
int main()
{
long int n;
cin >> n;
while (n--)
{
cin >> xo >> yo >> r >> vx >> vy >> ix1 >> iy1 >> ix2 >> iy2;
swap(iy1, iy2);
if (abs(ix1 - ix2) < 2 * r || abs(iy1 - iy2) < 2 * r)
{
cout << "No" << endl;
continue;
}
long double L = pow(vx * vx + vy * vy, 0.5);
place leftp = {xo, yo};
place rightp = {xo + 3000000 * vx / L, yo + 3000000 * vy / L};
long double t = trans(leftp, rightp) / PI;
long double a = trans(leftp, {ix1 + r, iy1 - r}) / PI;
long double b = trans(leftp, {ix1 + r, iy2 + r}) / PI;
long double c = trans(leftp, {ix2 - r, iy1 - r}) / PI;
long double d = trans(leftp, {ix2 - r, iy2 + r}) / PI;
/*cout << t << endl;
cout << a << endl;
cout << b << endl;
cout << c << endl;
cout << d << endl;*/
if (xo < ix1 + r)
{
if (yo > iy1 - r)
{
// cout << 1 << endl;
if ((t >= 0 && t < b) || (t <= 2 && t > c))
{
cout << "No" << endl;
continue;
}
}
else if (yo < iy2 + r)
{
// cout << 2 << endl;
if ((t > a && t <= 2) || (t < d && t >= 0))
{
cout << "No" << endl;
continue;
}
}
else
{
// cout << 3 << endl;
if (t > a && t < b)
{
cout << "No" << endl;
continue;
}
}
}
else if (xo > ix2 - r)
{
if (yo > iy1 - r)
{
//cout << 4 << endl;
if ((t > d && t <= 2) || (t < a && t >= 0))
{
cout << "No" << endl;
continue;
}
}
else if (yo < iy2 + r)
{
// cout << 5 << endl;
if ((t > b && t <= 2) || (t < c && t >= 0))
{
cout << "No" << endl;
continue;
}
}
else
{
// cout << 6 << endl;
if ((t > d && t <= 2) || (t < c && t >= 0))
{
cout << "No" << endl;
continue;
}
}
}
else
{
if (yo > iy1 - r)
{
// cout << 7 << endl;
if ((t > c && t <= 2) || (t < a && t >= 0))
{
cout << "No" << endl;
//while(1);
continue;
}
}
else if (yo < iy2 + r)
{
// cout << 8 << endl;
if ((t > b && t <= 2) || (t < d && t >= 0))
{
cout << "No" << endl;
continue;
}
} /*
else
{
//cout << 9 << endl;
}*/
}
cout << "Yes" << endl;
}
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 1ms
memory: 3968kb
input:
5 0 0 1 1 0 2 -2 6 2 0 0 1 1 0 2 0 6 2 0 0 1 1 1 1 1 3 3 0 0 1 -1 -1 1 1 3 3 0 0 1 -1 1 -5 -5 5 5
output:
Yes No Yes No Yes
result:
ok 5 lines
Test #2:
score: 0
Accepted
time: 0ms
memory: 3968kb
input:
2 0 0 1000000 1000000 1000000 -1000000 -1000000 1000000 1000000 1000000 1000000 1 -1000000 -1000000 -1000000 -1000000 -999999 -999999
output:
Yes No
result:
ok 2 lines
Test #3:
score: -100
Wrong Answer
time: 17ms
memory: 3968kb
input:
10000 10 -10 10 1 -2 -13 -8 6 -1 -7 -10 3 3 1 -3 -12 14 -9 -9 -2 4 4 -3 -11 7 -8 12 -3 1 8 -1 0 -11 1 19 13 -1 8 9 -3 2 11 -5 17 4 -2 -7 3 -3 5 -12 -14 10 1 0 3 6 -5 3 -11 2 2 16 4 9 6 5 -4 -8 -11 18 -1 0 0 8 4 -2 -10 -15 1 12 8 4 4 5 2 -17 3 8 7 -3 7 10 -4 0 1 0 10 20 -6 -10 5 -3 -1 -20 -20 15 7 5 ...
output:
No No No No No Yes No No No No No Yes No Yes No No Yes No Yes No No No No No Yes No No No Yes No No No Yes No No Yes No No No No No No No No No No No No Yes No No No No No No Yes No No Yes Yes No No Yes Yes Yes No No No No No No No Yes No No No No No No No No No No No No No No No No No No No No No Y...
result:
wrong answer 56th lines differ - expected: 'No', found: 'Yes'