Submission #829810

#TimeUTC-0UsernameProblemLanguageResultExecution timeMemory
8298102023-08-18 15:10:21soumyojit_senMobile (BOI12_mobile)C++14
0 / 100
1022 ms15956 KiB
#include <bits/stdc++.h>
using namespace std;
vector<pair<double, double>> pts;
int n;
double L;
bool works(double d){
// whether a radius of d is enough to intersect all the circles
double currDistCovered = 0.0;
for(int i = 0; i < n; i++){
// find the segment covered by ith circle on the highway
// radius^2 = yi^2 + dist^2
double dist = sqrt(d*d - pts[i].second*pts[i].second);
double start = pts[i].first - dist;
double end = pts[i].first + dist;
if(start <= currDistCovered){
currDistCovered = max(currDistCovered, end);
}
}
return currDistCovered >= L;
}
int main() {
cin >> n >> L;
pts.resize(n);
for(int i = 0; i < n; i++) cin >> pts[i].first >> pts[i].second;
double good = 1.5e9;
double bad = -1.0;
 
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