#include<iostream> using namespace std; int main(){ long long a,b,c,d,e; float f; f=3.1415926; a=1; b=3; c=5; d=7; e=9; cout<<f*a*a<<endl; cout<<f*b*b<<endl; cout<<f*c*c<<endl; cout<<f*d*d<<endl; cout<<f*e*e<<endl; return 0; }