每日一水~ 2012-04-25 HDU 1021 HDU 1002

HDU 1021：

饿。。打表。。算出每项%3的结果即可

#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("");}}}