QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#137484 | #2350. Integer Cow | Vengeful_Spirit# | RE | 1ms | 3584kb | C++20 | 3.4kb | 2023-08-10 13:19:09 | 2023-08-10 13:19:11 |
Judging History
answer
#include<bits/stdc++.h>
typedef long long ll;
using namespace std;
const double EPS = 1e-8;
struct Point {
double x, y;
};
double Dis(const Point &p1, const Point &p2) {
return sqrt((p1.x - p2.x) * (p1.x - p2.x) + (p1.y - p2.y) * (p1.y - p2.y));
}
Point Get(const Point &c, double r, const Point &p) {
Point u, v;
if(Dis(p, c) < EPS) return p;
// cerr << c.x << " " << c.y << " "<< r << "\n";
// cerr << p.x << " "<< p.y <<"\n";
// cerr << Dis(p, c) << "\n";
u.x = c.x + r * fabs(c.x - p.x) / Dis(c, p);
u.y = c.y + r * fabs(c.y - p.y) / Dis(c, p) * ((c.x - p.x) * (c.y - p.y) < 0 ? -1 : 1);
v.x = c.x - r * fabs(c.x - p.x) / Dis(c, p);
v.y = c.y - r * fabs(c.y - p.y) / Dis(c, p) * ((c.x - p.x) * (c.y - p.y) < 0 ? -1 : 1);
// cerr << u.x << " " << u.y << " " << v.x << " " << v.y << "\n";
return Dis(u, p) < Dis(v, p) ? u : v;
}
pair<double, double> get(double x, double y, double r2, double X) {
double delta = r2 - (X - x) * (X - x);
if(delta < 0) return {0, -1};
delta = sqrt(delta);
return {y - delta, y + delta};
}
pair<double, double> in(pair<double, double> x, pair<double, double> y) {
if(x.first == 0 && x.second == -1) return {0, -1};
if(y.first == 0 && y.second == -1) return {0, -1};
if(x.first > y.first) swap(x, y);
if(y.second <= x.second) return y;
if(y.first > x.second) return {0, -1};
return {y.first, x.second};
}
void solve() {
ll xc, yc, R, x, y;
cin >> xc >> yc >> R >> x >> y;
x -= xc, y -= yc;
if(!x && !y) {
cout << "0\n" << xc << " " << yc << "\n";
return ;
}
// (0, 0) r, x, y;
int flg = 0;
ll sx = 0, sy = 0;
double dis = sqrt(x * x + y * y) - R;
// cerr << dis << "\n";
// return ;
double mx = (dis + 1) * (dis + 1);
// cerr << mx << "\n";
ll ans = 9e18;
ll L, RR;
int ff = 0;
Point st; st.x = x, st.y = y;
double jx = Get((Point){0, 0}, R, st).x;
// cerr << jx << "\n";
ll l = -2e9, r = jx;
while(l <= r) {
ll mid = (l + r) >> 1;
auto[ll, rr] = in(get(0, 0, R * R, mid), get(x, y, mx, mid));
if(ll == 0 && rr == -1) {
l = mid + 1;
}
else {
ff = 1;
// cerr << mid << " " << ll << " "<< rr << "\n";
L = mid, r = mid - 1;
}
}
assert(ff);
l = (jx + 0.5), r = 2e9;
while(l <= r) {
ll mid = (l + r) >> 1;
auto[ll, rr] = in(get(0, 0, R * R, mid), get(x, y, mx, mid));
if(ll == 0 && rr == -1) r = mid - 1;
else {
ff = 1;
// cerr << "!" << mid << " "<< ll << " " << rr << "\n";
RR = mid, l = mid + 1;
}
}
// cerr << L << " " << RR << "\n";
// return ;
for(ll i = L; i <= RR; ++i) {
auto[l, r] = in(get(0, 0, R * R, i), get(x, y, mx, i));
for(ll j = 1ll * l; j <= r; ++j) {
if((x - i) * (x - i) + (y - j) * (y - j) <= mx) {
flg = 1;
mx = (x - i) * (x - i) + (y - j) * (y - j);
sx = i, sy = j;
}
}
}
assert(flg);
cout << 1 << "\n" << x + xc << " " << y + yc << " " << sx + xc << " " << sy + yc << "\n";
}
int main() {
ios::sync_with_stdio(0);
cin.tie(0);
int T; cin >> T;
for(int o = 1; o <= T; ++o) {
solve();
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 3416kb
input:
3 1 2 1 1 2 3 2 5 -10 3 0 0 1 10 0
output:
0 1 2 1 -10 3 -2 2 1 10 0 1 0
result:
ok correct (3 test cases)
Test #2:
score: 0
Accepted
time: 1ms
memory: 3584kb
input:
1 0 0 1 0 0
output:
0 0 0
result:
ok correct (1 test case)
Test #3:
score: -100
Dangerous Syscalls
input:
100 -1 0 2 -3 -2 0 -2 2 -2 0 2 -1 1 0 1 -1 -3 1 -1 0 -1 2 2 -1 -1 2 -2 2 0 -3 -2 -3 2 -3 -2 0 1 2 2 1 -1 0 1 -2 -2 2 -2 2 -1 -2 1 2 2 -2 2 -1 2 1 -1 2 -2 1 2 -3 -2 -1 1 1 -1 1 2 2 1 1 -3 2 0 1 -2 -1 -1 2 1 -2 0 2 -2 2 -2 -1 -2 -2 1 1 -2 -1 1 2 2 1 2 -3 1 0 -1 -3 -3 2 2 -1 2 1 1 -1 1 -3 -2 1 -2 -3 0 ...