Car

#include <bits/stdc++.h>
#define F first
#define S second
using namespace std;
typedef long double ld;

int main(){
	ld d;
	cin>>d;
	ld mi=0;
	ld ma=20;
	for (int i=0;i<100;i++){
		ld mid=(mi+ma)/2;
		if (exp(mid)+sqrt(mid)<d){
			mi=mid;
		}
		else{
			ma=mid;
		}
	}
	cout<<setprecision(16)<<ma<<endl;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED

Test 16

Verdict: ACCEPTED