每日一水~ 2012-04-25 HDU 1021 HDU 1002

HDU 1021：

餓。。打表。。算出每項%3的結果即可

#import <stdio.h>
int a[1000001];
int main() {
	int input;
	a[0] = 7%3;
	a[1] = 11%3;
	for (int i=2; i<=1000000; ++i)
		a[i] = (a[i-1] + a[i-2])%3;
	while (~scanf("%d",&input))
		if(!a[input]) printf("yes\n");
		else printf("no\n");
}

HDU 1002:

利用JAVA 水高精度 = =

import java.util.Scanner;
import java.math.BigInteger;
public class Main {
	public static void main(String[] args) {
		int ncase;
		BigInteger a,b,c;
		Scanner input = new Scanner(System.in);
		ncase = input.nextInt();
		for (int i=0; i<ncase; ++i) {
			a = input.nextBigInteger();
			b = input.nextBigInteger();
			c = a.add(b);
			System.out.printf("Case %d:\n\r",i+1);
			System.out.println(a+" + "+b+" = "+c);
			if(i!=ncase-1) System.out.println("");
		}
	}
}