OJ-Problems-Source/HDOJ/1324_autoAC.cpp

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2016-08-13 23:51:27 +08:00
#include<iostream>
using namespace std;
int record[100000];
int main()
{
int z,i,m,l,j;
int key=1;
while(cin>>z>>i>>m>>l)
{
if(z==0&&i==0&&m==0&&l==0)
break;
int k=1;
record[0]=l;
int flag=0;
while(1)
{
l=(z*l+i)%m;
for( j=0;j<k;j++)
{
if(record[j]==l)
{
flag=1;
break;
}
}
record[k++]=l;
if(flag)
break;
}
cout<<"Case "<<key<<':'<<' ';
cout<<k-j-1<<endl;
key++;
}
return 0;
}