#include<bits/stdc++.h>
using namespace std;
using Int = long long;
template<typename T1,typename T2> inline void chmin(T1 &a,T2 b){if(a>b) a=b;}
template<typename T1,typename T2> inline void chmax(T1 &a,T2 b){if(a<b) a=b;}

//INSERT ABOVE HERE
signed main(){
  int n,s,x,y,z;
  scanf("%d %d %d %d %d",&n,&s,&x,&y,&z);
  
  const int MAX=2e6+100;
  bitset<MAX> res(0),all(0);
  for(int i=0;i<MAX;i++) all[i]=1;  
  for(int i=0,a=s;i<n;i++){
    res[i]=a&1;
    a=(1LL*x*a+y)%z;
  }
  
  int q;
  scanf("%d",&q);
  for(int i=0;i<q;i++){
    int a,b,c,d;
    scanf("%d %d %d %d",&a,&b,&c,&d);
    a--;c--;
    int l=b-a;
    res^=((res>>a)&(all>>(MAX-l)))<<c;
  }

  for(int i=0;i<n;i++)
    printf("%c",res[i]?'O':'E');
  puts("");
  return 0;
}