#include <vector>
#include <iostream>
#include <cstdio>
#include <algorithm>
#include <iterator>
#include <string>
using namespace std;

int main(){
	const string tmp(1048574, '0');

	istream_iterator<double> first(cin), last;
	vector<double> v(first, last);
	printf("%f", *max_element(v.begin(), v.end()) - *min_element(v.begin(), v.end()));
	
	for(int i = 0; i < 10; ++i){
		fputs(tmp.c_str(), stdout);
		fflush(stdout);
	}
	
	puts("");
}