程序代码：

#include<stdio.h>
int main()
{
    int n,m,x1,y1;
    float x2,y2;
    while(scanf("%d%d",&n,&m)&&(n!=0&&m!=0))
     {
        if(m>2*n&&m<4*n)
        {
            x1=2*n-m/2;
            x2=2.0*n-m/2.0;
            y1=m/2-n;
            y2=m/2.0-n;
            if((x2-x1)&&(y2-y1))
            printf("%d %d",x,y);
            else
            printf("Error");
        }
        else
        printf("Error");
     }
    return 0;
}

程序代码：

#include<stdio.h>
int main()
{
    int n,m,x1,y1;
    float x2,y2;
    while(scanf("%d%d",&n,&m)&&(n!=0&&m!=0)!=EOF)
     {
        if(m>2*n&&m<4*n)
        {
            x1=2*n-m/2;
            x2=2.0*n-m/2.0;
            y1=m/2-n;
            y2=m/2.0-n;
            if((x2-x1)&&(y2-y1))
            printf("Error");
            else
            printf("%d %d",x1,y1);
        }
        else
        printf("Error");
     }
    return 0;
}

程序代码：

#include<iostream>
using namespace std;

int main()
{
    int m,n,a,b;
    while((cin>>n>>m) && (m||n))
    {

        if(m>2*n && m<4*n && m%2==0)
        {
            a=(4*n-m)/2;
            b=(m-2*n)/2;
            cout<<a<<" "<<b<<endl;
        }
        else
            cout<<"Error"<<endl;
    }
    return 0;
}