#include<bits/stdc++.h>
#define int long long
#define IOS ios::sync_with_stdio(false),cin.tie(0),cout.tie(0)
#define awa return 0;
using namespace std;
const int maxn=2e3+10;
int n,q;
int a[maxn];
int l,r;
signed main()
{
    IOS;
    cin>>n,q;
    for(int i=1;i<=n;i++)
    {
        cin>>a[i];
    }
    for(int i=1;i<=q;i++)
    {
        cin>>l>>r;
        int min_len=r-l+1;
        for(int j=l;j<=r;j++)
        {
            int minn=a[j],maxx=a[j];
            for(int k=i;k<=r;k++)
            {
                minn=min(minn,a[k]);
                maxx=max(maxx,a[k]);
                bool t=true;
                for(int p=i;p<=j;p++)
                {
                    if(a[p]<minn||a[p]>maxx)
                    {
                        t=false;
                        break;
                    }
                }
                if(t)
                {
                    min_len=min(min_len,k-j+1);
                }
            }
        }
        cout<<min_len<<endl;
    }
    awa
}
//