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alexhris's solution for 400: Square Count, written in Java
public class SquareCount { public static int pos(int N) { int broj=-1; int brojac=0; for (int i=1;brojac<=N;i++) { if (nedeliv(i)) { brojac+=1; if (brojac==N) { broj=i; break; } } } return broj; } public static boolean nedeliv(int n) { if (n==1) return true; for (int i=2;i<=Math.sqrt(n);i++) { if (n%(i*i)==0) return false; } return true; } }