#include <bits/stdc++.h>   using namespace std;   const int N6 = 1e6 + 6;   using namespace std;   long long n, m, x, y, sum1, sum2, ans1, ans2;   int main() {     cin >> n >> x >> y;     if (n > y) {       cout << -1;       return 0;     }     sum1 = y - n + 1;     sum1 *= sum1;     sum1 += (n - 1);     if (sum1 >= x) {       for (int i = 1; i < n; ++i) {         cout << 1 <<    ;       }       cout << y - n + 1;     } else       cout << -1;     return 0;   }   