http://poj.org/problem?id=2196 //* @author popop0p0popo public class Main{ public static void main(String[] args){ int t,h,w; for (int i=2992;i< 10000 ;i++ ){ t=getI(i); h=getD(Integer.toHexString(i)); w=getD(Integer.toString(i,12)); if (t==h&&h==w){ System.out.println(i); } } } public static int getD(String n){ int d=0; for (int i=0;i< n.length() ;i++ ){ if (Character.isLetter(n.charAt(i))){ d=d+10+(int)(n.charAt(i)-'a'); } else{ d=d+(int)(n.charAt(i)-'0'); } } return d; } public static int getI(int n){ int a=n/1000; int b=(n-1000*a)/100; int c=(n-1000*a-100*b)/10; int d=n-1000*a-100*b-10*c; return a+b+c+d; } }
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