# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
409995 |
2021-05-21T20:29:16 Z |
BERNARB01 |
Mobile (BOI12_mobile) |
C++17 |
|
1000 ms |
65672 KB |
#include <bits/stdc++.h>
using namespace std;
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
long long n, L;
cin >> n >> L;
vector<pair<long long, long long>> p(n);
for (long long i = 0; i < n; i++) {
cin >> p[i].first >> p[i].second;
}
long double l = -1, r = 2e9 + 1;
for (long long itr = 0; itr < 100; itr++) {
long double mid = (l + r) / 2.0;
vector<pair<long double, long double>> v;
long long ok = 1;
for (long long i = 0; i < n; i++) {
long double b = -2.0 * p[i].first;
long double c = (p[i].first * p[i].first) + (p[i].second * p[i].second) - (mid * mid);
long double delta = (b * b) - 4.0 * c;
if (delta < 0) {
continue;
}
long double lb = (-b - sqrtl(delta)) / 2.0, rb = (-b + sqrtl(delta)) / 2.0;
if (lb > (long double) L) {
continue;
}
while (!v.empty() && lb < v.back().first) {
v.pop_back();
}
if (!v.empty() && v.back().second < lb) {
ok = 0;
break;
}
v.push_back({lb, rb});
}
if (v.empty() || !ok || (!v.empty() && ((min((long double) L, end(v)[-1].second) - max(v[0].first, (long double) 0.0)) < (long double) L))) {
l = mid;
} else {
r = mid;
}
}
cout << setprecision(4) << fixed << (r + l) / 2.0 << '\n';
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
1 ms |
204 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
1 ms |
204 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
5 ms |
460 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
10 ms |
720 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
9 ms |
636 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
16 ms |
844 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
196 ms |
8372 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
117 ms |
5284 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
565 ms |
9020 KB |
Output is correct |
2 |
Correct |
295 ms |
8944 KB |
Output is correct |
3 |
Correct |
258 ms |
9404 KB |
Output is correct |
4 |
Incorrect |
102 ms |
4160 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
458 ms |
5580 KB |
Output is correct |
2 |
Correct |
353 ms |
9496 KB |
Output is correct |
3 |
Correct |
315 ms |
10196 KB |
Output is correct |
4 |
Incorrect |
103 ms |
4240 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
538 ms |
9524 KB |
Output is correct |
2 |
Correct |
351 ms |
9464 KB |
Output is correct |
3 |
Correct |
313 ms |
10232 KB |
Output is correct |
4 |
Incorrect |
98 ms |
4212 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
1072 ms |
40904 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
1090 ms |
10692 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
1094 ms |
59592 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
1087 ms |
12256 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
1095 ms |
61000 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
1083 ms |
13824 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
1083 ms |
62520 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
1089 ms |
15380 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
1088 ms |
65672 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
1100 ms |
18240 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |