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#include <iostream>
#include <cmath> 
using namespace std; 
int main()
{
    // задача В 
    int x, y;
    cin >> x >> y;
    int ch = 0;
    if (x > 0) {
        if (y > 0) {
            ch = 1;
        }
        if (y < 0) {
            ch = 4;
        }
    }
    if (x < 0) {
        if (y > 0) ch = 2;
        else ch = 3;
    }

    int x2, y2;
    cin >> x2 >> y2;
    int ch2 = 0;
    if (x2 > 0) {
        if (y2 > 0) {
            ch2 = 1;
        }
        if (y2 < 0) {
            ch2 = 4;
        }
    }
    if (x2 < 0) {
        if (y2 > 0) ch2 = 2;
        else ch2 = 3;
    }
    if (ch == ch2); // to do;
}
    
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