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请高手多多指教呀!我不知道自己的程序为什么总是WA?哪位高人出手指教啊!
#include <iostream.h>
#include <math.h>
void main()
{
unsigned long int x,y,m,n,L,t;
cin>>x>>y>>m>>n>>L;
if(m==n) cout<<"Impossible"<<endl;
else{
if(m>n) {
if(abs(x-y)%(m-n)==0){
t=abs(x-y)/(m-n);
cout<<t<<endl;
}
else cout<<"Impossible"<<endl;
}
else{
if((L-abs(x-y))%(n-m)==0){
t=(L-abs(x-y))/(n-m);
cout<<t<<endl;
}
else cout<<"Impossible"<<endl;
}
}
}
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