#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=1e5+100;
  using BS = bitset<MAX>;
  vector<BS> res(22);
  BS all(0);
  for(int i=0;i<MAX;i++) all[i]=1;  
  for(int i=0,a=s;i<n;i++){
    res[i/MAX][i%MAX]=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--;
    
    BS tmp(0);
    
    int p=(a/MAX+1)*MAX;
    if(p<=b){
      tmp|=res[a/MAX]>>(a%MAX);
      tmp|=(res[p/MAX]&(all>>(MAX-(b-p))))<<(p-a);
    }else{
      tmp|=(res[a/MAX]>>(a%MAX))&(all>>(MAX-(b-a)));
    }

    int q=(c/MAX+1)*MAX;
    res[c/MAX]^=tmp<<(c%MAX);
    res[q/MAX]^=tmp>>(q-c);
  }

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