#include <iostream>
#include <string>
#include <math.h>
using namespace std;
int main ()
{
cout << 1 + -4 << "\n";
signed int x1; //(x1, ...
signed int y1; //(x1, y1)...
signed int x2; //... (x2, ...
signed int y2; // ... (x2, y2)
signed int ans1;
signed int ans2;
signed int ans3;
signed int result;
cout << "X1: ";
cin >> x1;
cout << "\nY1: ";
cin >> y1;
cout << "\nX2: ";
cin >> x2;
cout << "\nY2: ";
cin >> y2;
cout << "\n(" << x1 << ", " << y1 << "), (" << x2 << ", " << y2 << ")\n";
result = (x2 - x1)*(x2 - x1) + (y2 - y1)*(y2 - y1);
cout << "X2 - X1 = " << x2 - x1 << "\n";
cout << "Y2 - Y1 = " << y2 - y1 << "\n";
ans1 = x2 - x1;
ans2 = y2 - y1;
ans3 = ans1 + ans2;
cout << ans1 << " + " << ans2 << " = " << ans3;
cout << result << "\n";
return 0;
}
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