#include <stdio.h>
 #include <math.h>
#include <iso646.h>
 int main()
 {
    float x,y;
    printf("Введите значениия х и у: \n");
    scanf("%f %f", &x, &y);


    if ( x >= 0 and y >= 0 and ( x*x + y*y >= 1) and (fabsf(x) + fabsf(y) <= 2) or ( x <= 0 and y >= 0 and ( x*x + y*y <= 1)) or ( x <= 0 and y <= 0 and (x *x + y*y >= 1) and (fabsf(x)+fabsf(y) <= 2)) or (x >= 0 and y <= 0 and (x*x + y*y <=1)))
        printf("Входит в область \n");
    else
        printf("Не входит в область \n");
     return 0;
 }