#include <bits/stdc++.h>
const int32_t MAX_N = 1e6;
const double EPS = 1e-6;
int32_t n, l;
std::pair< int32_t, int32_t > points[MAX_N + 5];
bool Check(long double r) {
std::vector< std::pair< long double, bool > > events(2 * n);
long double curr = 0;
for(int32_t i = 0; i < n; i++) {
if(r * r < (int64_t) points[i].second * points[i].second) {
continue;
}
long double x1 = points[i].first - sqrt(r * r - (int64_t) points[i].second * points[i].second);
long double x2 = points[i].first + sqrt(r * r - (int64_t) points[i].second * points[i].second);
if(!(x1 > curr)) {
curr = std::max(curr, x2);
}
}
if(!(curr < l)) {
return true;
}
else {
return false;
}
}
int main() {
std::ios_base::sync_with_stdio(false);
std::cin.tie(nullptr);
std::cin >> n >> l;
for(int32_t i = 0; i < n; i++) {
std::cin >> points[i].first >> points[i].second;
}
int64_t low = 1, high = 1e12;
long double ans;
while(low <= high) {
int64_t mid = (low + high) / 2;
if(Check(mid / 10000.0)) {
ans = mid / 10000.0;
high = mid - 1;
}
else {
low = mid + 1;
}
}
std::cout << std::fixed << std::setprecision(7);
std::cout << ans << '\n';
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
380 KB |
Output is correct |
3 |
Correct |
2 ms |
440 KB |
Output is correct |
4 |
Correct |
2 ms |
596 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
596 KB |
Output is correct |
2 |
Correct |
2 ms |
596 KB |
Output is correct |
3 |
Correct |
2 ms |
596 KB |
Output is correct |
4 |
Correct |
2 ms |
596 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
800 KB |
Output is correct |
2 |
Correct |
5 ms |
800 KB |
Output is correct |
3 |
Correct |
4 ms |
800 KB |
Output is correct |
4 |
Correct |
5 ms |
800 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
972 KB |
Output is correct |
2 |
Correct |
7 ms |
972 KB |
Output is correct |
3 |
Correct |
7 ms |
1100 KB |
Output is correct |
4 |
Correct |
7 ms |
1100 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
7 ms |
1100 KB |
Output is correct |
2 |
Correct |
7 ms |
1100 KB |
Output is correct |
3 |
Correct |
7 ms |
1100 KB |
Output is correct |
4 |
Correct |
6 ms |
1132 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
7 ms |
1132 KB |
Output is correct |
2 |
Correct |
7 ms |
1132 KB |
Output is correct |
3 |
Correct |
7 ms |
1132 KB |
Output is correct |
4 |
Correct |
6 ms |
1132 KB |
Output is correct |
5 |
Correct |
7 ms |
1132 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
77 ms |
6012 KB |
Output is correct |
2 |
Correct |
78 ms |
6012 KB |
Output is correct |
3 |
Correct |
52 ms |
6012 KB |
Output is correct |
4 |
Correct |
63 ms |
6012 KB |
Output is correct |
5 |
Correct |
43 ms |
6012 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
68 ms |
6140 KB |
Output is correct |
2 |
Correct |
63 ms |
6140 KB |
Output is correct |
3 |
Correct |
70 ms |
6292 KB |
Output is correct |
4 |
Correct |
66 ms |
6292 KB |
Output is correct |
5 |
Correct |
72 ms |
6720 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
89 ms |
6844 KB |
Output is correct |
2 |
Correct |
87 ms |
6844 KB |
Output is correct |
3 |
Correct |
81 ms |
6844 KB |
Output is correct |
4 |
Correct |
83 ms |
7584 KB |
Output is correct |
5 |
Correct |
78 ms |
7584 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
106 ms |
7800 KB |
Expected double, but "-nan" found |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
109 ms |
7800 KB |
Output is correct |
2 |
Correct |
106 ms |
7800 KB |
Output is correct |
3 |
Correct |
94 ms |
8860 KB |
Output is correct |
4 |
Correct |
82 ms |
10688 KB |
Output is correct |
5 |
Correct |
85 ms |
11980 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
555 ms |
40352 KB |
Expected double, but "-nan" found |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
584 ms |
40352 KB |
Expected double, but "-nan" found |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Execution timed out |
1055 ms |
47488 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Execution timed out |
1073 ms |
47488 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Execution timed out |
1062 ms |
54392 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Execution timed out |
1036 ms |
54572 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Execution timed out |
1064 ms |
61544 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Execution timed out |
1020 ms |
61544 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Execution timed out |
1074 ms |
75712 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Execution timed out |
1006 ms |
75712 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |