#include<iostream>
#include<cstring>
using namespace std;
typedef unsigned long long ULL;

const int N = 100010,P = 131;
ULL h[N],p[N];//h[i]为哈希值，p[i]为P的i次方
char str[N];

ULL get(int l,int r){
    return h[r] - h[l-1] * p[r-l+1];
}

int main(){
    int n,m;
    cin>>n>>m;
    scanf("%s",str+1);
    p[0] = 1;
    for(int i = 1;i<=n;i++){
        p[i] = p[i-1]*P;//预处理p数组，存储P的多少次方
        h[i] = h[i-1] * P + str[i];
    }
    while(m--){
        int l1,r1,l2,r2;
        cin>>l1>>r1>>l2>>r2;
        if(get(l1,r1) == get(l2,r2)) puts("Yes");
        else puts("No");
    }
    return 0;
}