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#include <fstream> #include <iostream> #include <string> using namespace std; int aa(int x1, int x2) { return x2 - x1; } int bb(int y1, int y2) { return y1 - y2; } int PP(int a, int b) { return 2 * a + 2 * b; } int SS(int a, int b) { return a * b; } float CTx(float a, float x) { return float(x + (a/2)) ; } float CTy(float b, float y) { return float(y - (b / 2)); } int main() { float a, b, x[4], y[4]; for (int i = 0; i < 4; i++) { cin >> x[i] >> y[i]; } a = aa(x[0], x[1]); b = bb(y[1], y[2]); cout << SS(a, b) << endl << PP(a, b) << endl << CTx(a, x[0]) << " " << CTy(b, y[0]); }