#include<bits/stdc++.h>
using namespace std;


int main() {
	int n,a[110],s = 0,ma = 0;
	cin>>n;
	int i;
	for(i = 0; i < n; i++) {
		cin>>a[i];
		if(a[i] > a[ma]){
			ma = i;
		}
	}
	
	cout<<fixed<<setprecision(2)<<3.14 * a[ma] * a[ma];
	cout<<" ";
	cout<<ma + 1;
}

/**************************************************************
	Problem: 1813
	User: admin
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2072 kb
****************************************************************/