/*
* Author: Arpit Bhayani
* https://arpitbhayani.me
*/
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <climits>
#include <deque>
#include <iostream>
#include <list>
#include <limits>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <vector>
#define ll long long
#define MIN(a, b) a < b ? a : b
using namespace std;
int main(int argc, char *argv[]) {
int t;
scanf("%d", &t);
while( t-- ) {
int b, ls;
scanf("%d%d", &b, &ls);
float mi = sqrt(ls * ls - b * b);
float ma = sqrt(ls * ls + b * b);
printf("%.5f %.5f\n", mi, ma);
}
return 0;
}
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