#include <bits/stdc++.h>
using namespace std;
int64_t a, b, n;
int main() {
  cin >> a >> b >> n;
  if (n == 1) {
    if (b % a == 0) {
      cout << b / a << endl;
    } else {
      puts("No solution");
    }
    return 0;
  }
  for (int64_t x = -1000; x <= 1000; ++x) {
    if (fabs(pow((double)x, n)) < 10000 && a * pow(x, n) == b) {
      cout << x << endl;
      return 0;
    }
  }
  puts("No solution");
}
