c20210711 uri1036.c

#include<stdio.h>

int main(){

    double a, b, c;
    scanf("%lf %lf %lf", &a, &b, &c);

    double d = b*b - 4*a*c;
    if(d < 0 || a == 0){
        printf("Impossivel calcular\n");
    }
    else{
        double sqrt = d / 2;
        double temp = 0;
        while(sqrt != temp){
            temp = sqrt;
            sqrt = (d/temp + temp) / 2;
        }
        //printf("%f", sqrt);

        double r1 = (-b + sqrt) / (2*a);
        double r2 = (-b - sqrt) / (2*a);

        printf("R1 = %.5lf\nR2 = %.5lf\n", r1, r2);
    }
    return 0;
}