#!/usr/local/bin/tcc -run
#include <stdio.h>
#include <math.h>
int main(void){
    double x,p1,p2,p3,g;
    printf("Input x\n");
    scanf("%lf",&x);
    p1=1.0-x*x;
    p2=2.0*0.5*x;
    p3=p1*p1+p2*p2;
    g=-10.0*log10(p3);
    printf("p1=%f\n",p1);
    printf("p2=%f\n",p2);
    printf("p3=%f\n",p3);
    printf("g=%f\n",g);
    return 0;
}