#include <iostream>
using namespace std;

int main()
{
    int x1, x2, x3, x4, y1, y2, y3, y4;
    cout << "Iveskite keturkampio tasku koordinates: \n";
    cout << "Tasko A koordinatės: "; cin >> x1 >> y1;
    cout << "Tasko B koordinatės: "; cin >> x2 >> y2;
    cout << "Tasko C koordinatės: "; cin >> x3 >> y3;
    cout << "Tasko D koordinatės: "; cin >> x4 >> y4;



    if (x1 <= 0 ){
        x1 = x1 * -1;
    }

    if (x2 <= 0){
        x2 = x2 * -1;
    }

    if (x3 <= 0){
        x3 = x3 * -1;
    }

    if (x4 <= 0){
        x4 = x4 * -1;
    }

    if (y1 <= 0 ){
        y1 = y1 * -1;
    }

    if (y2 <= 0){
        y2 = y2 * -1;
    }

    if (y3 <= 0){
        y3 = y3 * -1;
    }

    if (y4 <= 0){
        y4 = y4 * -1;
    }

    ilgisB(x1, x2);
    ilgisC(x1, x3);
    cout << "Jusu ivesto staciakampio plotas yra lygus: " << plotas(AB, AC);
    cout << "Jusu ivesto staciakampio perimetras yra lygus: " << perimetras(AB, AC);

    return;
}

int ilgisB(int x1,int x2){
    int AB;
    AB = x1 + x2;
    return AB;
}

int ilgisC(int x1, int x3){
    int AC;
    AC = x1 + x3;
    return AC;
}

int plotas(int x,int y){
    int s = 0;
    s = (x * y ) / 2;
    return s;
}

int perimetras(int x,int y){
    int p = 0;
    p = ( x + y ) * 2;
    return p;
}