/*
 * rtext.c by Cobi
 * Extracts a root of a number by brute force.
 * gcc rtext.c -o rtext -lm
 */

/*
 * We need this library for printf and fprintf.
 */
#include <stdio.h> 

/*
 * We need this library for atoi and malloc.
 */
#include <stdlib.h>

/*
 * We need this library for exp10.
 */
#include <math.h>

/*
 * We need this library for strcat.
 */
#include <strings.h>

/*
 * Our main function.
 */
int main (int argc, char **argv) {
	/*
	 * We define some variables.
	 */
	char **ret = 0;
	unsigned long root = strtoll(argv[1],ret,0);
	ret = 0;
	unsigned long places = strtoll(argv[3],ret,0);
	ret = 0;
	long double initial = strtol(argv[2],ret,0);
	long double value = 0;
	signed long long place = 0;
	unsigned long nplace = 1;
	signed long long temp = (signed long long) initial;

	if (temp > 0) {
		while (temp >= 10) {
			temp = temp / 10;
			place++;
		}
	} else {
		while (temp < 0) {
			temp = temp * 10;
			place--;
		}
	}

	temp = 0;

	char imaginary = 0; /* This really should be a boolean, but there is no boolean in C. */

	ret = 0;

	if (strtoll(argv[1],ret,0) < 0) {
		imaginary = 1;
	}

	ret = 0;

	while (nplace < places) {
		while (powl(value,root) < initial) {
			value += pow(10,place);
		}
		value -= pow(10,place);
		place--;
		nplace++;
	}
	char temp2[100];
	if (place < 0) {
		place = 0 - place;
	}
	snprintf(temp2,sizeof(temp2),"%%.%LdLg\n",place);
	printf(temp2,value);
}