/ **
* compareTo: returns -1, 0, or 1 according to whether the value is less than, equal to, or greater than val;
public int compareTo (BigInteger val)
compares this BigInteger with the specified BigInteger.
For each method for each of the six Boolean comparison operators (<, ==,>,> =,! =, <=)
, This method is given priority.
The recommended statement to perform these comparisons is: (x.compareTo (y) <op> 0),
where <op> is one of the six comparison operators.
* /
/ **
* and: && equivalent to c ++, and;
* /
import java.io. *;
import java.util. *;
import java.math.*;
public class Main {
/**
* @xqq
*/
public int an(BigInteger a, BigInteger b, BigInteger sa, BigInteger sb) {
int years = 0;
if(a.compareTo(sa) >= 0 && a.compareTo(sb) <= 0) {
++ years;
}
if(b.compareTo(sa) >= 0 && b.compareTo(sb) <= 0) {
++ years;
}
for(;;) {
BigInteger c = a.add(b);
a = b;
b = c;
if(b.compareTo(sa) >= 0 && b.compareTo(sb) <= 0) {
++ years;
}
if(b.compareTo(sb) > 0) {
return ans;
}
}
}
public static void main(String[] args) throws Exception {
// Define and open the input file
Scanner cin = new Scanner(System.in);
Main e = new Main();
BigInteger a = BigInteger.valueOf(1);
BigInteger b = BigInteger.valueOf(2);
BigInteger in;
BigInteger sb;
BigInteger zero = BigInteger.ZERO;
while(cin.hasNext()) {
set = cin.nextBigInteger ();
sb = cin.nextBigInteger ();
if(sa.compareTo(zero) == 0 && sb.compareTo(zero) == 0) {
break;
}
System.out.println (e.an (a, b, sa, sb));
}
cin.close (); // Close input file
}
}
HDU 1316 How Many Fibs? (Java, simple questions, large numbers), cloth button, bubuko.com
HDU 1316 How Many Fibs? (Java, simple questions, large numbers)