RE ！！悬关求助 ！！

#include<bits/stdc++.h>
using namespace std;
const int N=2000006;
#define ll long long
string s;
int m;
int l1,l2;
int r1,r2;
int p=13331;
ll a[N],b[N];
ll dff(){//前缀和
	int v=s.size();
	for(int i=1;i<v;i++){
		a[i]=a[i-1]*p+s[i];
		b[i]=b[i-1]*p;
	}
}
ll dfff(int x,int y){
	return a[x]-a[x-1]*b[y-x+1];
}
int main(){
	b[0]=1;
	cin>>s;
	s=' '+s;
	cin>>m;
	dff();
	for(int i=1;i<=m;i++){
		cin>>l1>>r1;
		cin>>l2>>r2;
		if(dfff(l1,r1)==dfff(l2,r2)){
			cout<<"Yes"<<endl;
		}else{
			cout<<"No"<<endl;
		}
	}
	return 0;
}