>>395
#include<stdio.h>
#include<math.h>
#include<stdlib.h>
double fact(int n){ return n>0?n*fact(n-1):1;}
int main(void){
int n; double sinx, x; char tmp[100];
fgets(tmp, 100, stdin);
x=atof(tmp); sinx=0.0;
for(n=0; n<=10; n++){ sinx += (pow(x,2*n-1)/fact(2*n+1)); }
printf("sin_10=%f\n", sinx);
return 0;
}