#include <iostream>
#include <cmath> 

using namespace std;

double f(double x) {
    return (x-2)*(x-2)+5;
}

double f1(double x) {
    return 2*(x-2);
}

int main() {
    double a, b, eps, c, xmin;
    
    
    cin >> a >> b >> eps; 
    
    int k = 0;
    
    while (abs(b - a) > eps) {
        c = (b + a) / 2; 
        
       
        if (f1(c) == 0) { 
            cout << "exact min " << c;
            return 0; 
        }
        
        if (f1(c) > 0) {
            b = c;
        }
        
        if (f1(c) < 0) {
            a = c;
        }
        
        k++; 
    }
    
    xmin = (b + a) / 2; 
    cout << xmin << " " << k;
    
    return 0;
}