NYOJ题目74小学生算术

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模拟加法过程即可。

AC代码：

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
    
    public static void main(String[] args) throws NumberFormatException, IOException {
        
        BufferedReader reader=new BufferedReader(new InputStreamReader(System.in));
        
        boolean first=true;
        while(first || reader.ready()){
            first=false;
            String ss[]=reader.readLine().split(" ");
            int a=Integer.parseInt(ss[0]);
            int b=Integer.parseInt(ss[1]);
            if(a==0 && b==0) return ;
            System.out.println(solve(a,b));
        }
        
    }
    
    public static int solve(int a,int b){
        int res=0; boolean carry=false;
        while(a>0 && b>0){
            int t1=a%10;
            int t2=b%10;
            if(t1+t2+(carry?1:0)>=10){
                res++;
                carry=true;
            }else{
                carry=false;
            }
            a/=10;
            b/=10;
        }
        return res;
    }

}

题目来源： http://acm.nyist.net/JudgeOnline/problem.php?pid=74