#include <bits/stdc++.h>
using namespace std;
int A, B, n;
int main() {
  cin >> A >> B >> n;
  if (B == 0) {
    cout << 0;
    return 0;
  } else {
    if (A == 0) {
      cout << "No solution";
      return 0;
    } else {
      if (B % A != 0) {
        cout << "No solution";
        return 0;
      } else {
        if (B / A < 0 && n % 2 == 0) {
          cout << "No solution";
          return 0;
        }
        int k = abs(B / A);
        int d = 0;
        int p = 0;
        while (p < k) {
          d++;
          p = pow((double)d, (double)n);
          if (p == k) {
            if (B / A > 0) {
              cout << d;
              return 0;
            } else {
              cout << -d;
              return 0;
            }
          }
        }
        cout << "No solution";
        return 0;
      }
    }
  }
}
