#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c;
  cin >> a >> b >> c;
  if (a == 0) {
    if (b != 0) {
      cout << "No solution";
    } else {
      cout << "-982";
    }
    return 0;
  }
  if (b == 0) {
    cout << 0;
    return 0;
  }
  int x = b / a;
  for (int i = 1; i <= abs(x); i++) {
    int q = 1;
    for (int j = 0; j < c; j++) {
      q *= i;
      if (q > abs(x)) {
        cout << "No solution";
        return 0;
      }
    }
    if (q == x) {
      cout << i;
      return 0;
    }
    q = 1;
    for (int j = 0; j < c; j++) {
      q *= (i * -1);
      if (q > abs(x)) {
        cout << "No solution";
        return 0;
      }
    }
    if (q == x) {
      cout << (i * -1);
      return 0;
    }
  }
  cout << "No solution";
}
