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  1. #include <iostream>
  2. #include <math.h>
  3. #include <vector>
  4. #include <algorithm>
  5.  
  6. using namespace std;
  7. int main() {
  8.         int x1=0;
  9.         int y1=0;
  10.         int x2=1;
  11.         int y2=1;
  12.         int x3=0;
  13.         int y3=1;
  14.         int x4=1;
  15.         int y4=0;
  16.  
  17.         std::vector<double> vec;
  18.         vec.push_back(sqrt((double)((x2- x1)*(x2-x1) + (y2-y1)*(y2-y1))));
  19.         vec.push_back(sqrt((double)((x2- x3)*(x2-x3) + (y2-y3)*(y2-y3))));
  20.         vec.push_back(sqrt((double)((x4- x3)*(x4-x3) + (y4-y3)*(y4-y3))));
  21.         vec.push_back(sqrt((double)((x4- x1)*(x4-x1) + (y4-y1)*(y4-y1))));
  22.         vec.push_back(sqrt((double)((x4- x2)*(x4-x2) + (y4-y2)*(y4-y2))));
  23.         vec.push_back(sqrt((double)((x3- x1)*(x3-x1) + (y3-y1)*(y3-y1))));
  24.  
  25.         std::sort(vec.begin(),vec.end());
  26.  
  27.  
  28.         if(vec[0]==vec[3])
  29.         {   
  30.         	std::cout<<"Test"<<std::endl;
  31.         	double sqrt1 = sqrt(vec[0]*vec[0]+vec[1]*vec[1]);
  32.         	double sqrt2 = sqrt(vec[2]*vec[2]+vec[3]*vec[3]);
  33.         	/*
  34.         	std::cout<<"vec[4] ="<<vec[4]<<std::endl;
  35.         	std::cout<<"sqrt1 = "<<sqrt1<<std::endl;
  36.         	*/
  37.         	if(vec[4]==sqrt1 && vec[5] == sqrt2)
  38.         	{   
  39.         		std::cout<<"YES"<<std::endl;
  40.         		return 0;
  41.         	}   
  42.         }   
  43.  
  44.         std::cout<<"NO";
  45.         return 0;
  46. }
Success #stdin #stdout 0s 3476KB
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stdin
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Standard input is empty
stdout
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Test
NO
https://ideone.com/lv8OZs
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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