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Time Limit Exceeded 怎么该啊！算法不会，大侠指点啊！#include<iostream>
#include<cstdlib>
#include<cstring>
#include<cmath>
using namespace std;
int main()
{
__int64 x,y,L,m,n;
scanf("%I64d %I64d %I64d %I64d %I64d",&x,&y,&m,&n,&L);
for(int i=0;i<L;i++)
{
if((x+i*m)%L == (y+i*n)%L)
{
cout<<i<<endl;
break;
}
if(((x+i*m)%L != (y+i*n)%L)&&i==L-1)
cout<<"Impossible"<<endl;
}
return 0;
}
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