Accounting

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        long A = sc.nextLong();
        long B = sc.nextLong();
        int n = sc.nextInt();

        if (A == 0) {
            System.out.println(B == 0 ? 0 : "No solution");
            return;
        }

        if (B % A != 0) {
            System.out.println("No solution");
            return;
        }

        long Y = B / A;

        if (Y == 0) {
            System.out.println(0);
            return;
        }

        long absY = Math.abs(Y);
        long x = Math.round(Math.pow(absY, 1.0 / n));

        for (long cand = Math.max(0, x - 1); cand <= x + 1; cand++) {
            long val = 1;
            for (int i = 0; i < n; i++) val *= cand;

            if (val == absY) {
                if (Y < 0) {
                    if (n % 2 == 0) {
                        System.out.println("No solution");
                        return;
                    }
                    cand = -cand;
                }
                System.out.println(cand);
                return;
            }
        }

        System.out.println("No solution");
    }
}