Submission #3221426
Source Code Expand
#include <bits/stdc++.h> using namespace std; typedef long long ll; typedef pair<ll, ll> Pll; typedef pair<int, int> Pii; const long double EPS = 10e-10; int main(){ pair<double, double> p[3]; for(int i=0;i<3;i++){ cin >> p[i].first >> p[i].second; } // もっとも長い辺 double e[3]; double longest_edge = 0.0; for(int i=0;i<3;i++){ int j = (i+1)%3; pair<double, double> diff; diff.first = p[j].first - p[i].first; diff.second = p[j].second - p[i].second; e[i] = sqrt( diff.first*diff.first + diff.second*diff.second ); longest_edge = max(longest_edge, e[i]); } // 面積 double s = (e[0]+e[1]+e[2])/2; double area = sqrt(s * (s-e[0]) * (s-e[1]) * (s-e[2])); // 内接円の半径 double r = area / s; double ok = EPS, ng = 1000.0; for(int i=0;i<int(1e6);i++){ double mid = (ok+ng) / 2.0; if(2.0 * mid * r <= longest_edge * (r-mid)){ ok = mid; }else{ ng = mid; } } printf("%.10lf\n", ok); }
Submission Info
Submission Time | |
---|---|
Task | B - Inscribed Bicycle |
User | Noimin |
Language | C++14 (GCC 5.4.1) |
Score | 500 |
Code Size | 1156 Byte |
Status | AC |
Exec Time | 11 ms |
Memory | 256 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 500 / 500 | ||||
Status |
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Set Name | Test Cases |
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Sample | example0.txt, example1.txt |
All | 000.txt, 001.txt, 002.txt, 003.txt, 004.txt, 005.txt, 006.txt, 007.txt, 008.txt, 009.txt, 010.txt, 011.txt, 012.txt, 013.txt, 014.txt, 015.txt, example0.txt, example1.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
000.txt | AC | 10 ms | 256 KB |
001.txt | AC | 11 ms | 256 KB |
002.txt | AC | 10 ms | 256 KB |
003.txt | AC | 10 ms | 256 KB |
004.txt | AC | 10 ms | 256 KB |
005.txt | AC | 10 ms | 256 KB |
006.txt | AC | 10 ms | 256 KB |
007.txt | AC | 10 ms | 256 KB |
008.txt | AC | 10 ms | 256 KB |
009.txt | AC | 10 ms | 256 KB |
010.txt | AC | 10 ms | 256 KB |
011.txt | AC | 10 ms | 256 KB |
012.txt | AC | 10 ms | 256 KB |
013.txt | AC | 10 ms | 256 KB |
014.txt | AC | 10 ms | 256 KB |
015.txt | AC | 10 ms | 256 KB |
example0.txt | AC | 10 ms | 256 KB |
example1.txt | AC | 10 ms | 256 KB |