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  1. #include <bits/stdc++.h>
  2. #define d(x) cout<<'\n'<<#x<<' '<<x;
  3. using namespace std;
  4. int m,h1,h2,x1,x2,a1,a2,y11,y2,t;
  5. bool b1[1000000],b2[1000000];
  6. int i1[1000000],i2[1000000];
  7. int main()
  8. {
  9.     fill(i2,i2+1000000,-1);
  10.     fill(i1,i1+1000000,-1);
  11.     t=1;
  12.     cin >> m >> h1 >> a1 >> x1 >> y11 >> h2 >> a2 >> x2 >> y2 ;
  13.     i1[h1]=0;
  14.     i2[h2]=0;
  15.     for(int i=0;i<m;i++)
  16.     {
  17.         h1=(x1*h1+y11)%m;
  18.         if(b1[h1])
  19.             break;
  20.         i1[h1]=i+1;
  21.     }
  22.     for(int i=0;i<m;i++)
  23.     {
  24.         h2=(x2*h2+y2)%m;
  25.         if(b2[h2])
  26.             break;
  27.         i2[h2]=i+1;
  28.     }
  29.     if(i1[a1]==-1 || i1[a2]==-1){cout<<-1;return 0;}
  30.     int xx=m*i1[a1];
  31.     int yy=m*i2[a2];
  32.     if(i1[a1]!=i2[a2])
  33.     cout<<((xx*yy)/__gcd(xx,yy));
  34.     else cout<<i1[a1];
  35.     return 0;
  36. }
Success #stdin #stdout 0s 12912KB
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https://ideone.com/ptH0fA
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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