#include<bits/stdc++.h>
#define inf 1e9
#define eps 1e-6
#define FOR(i, a, b) for(int i = a;i <= b;i ++)
#define REP(i, a, b) for(int i = a;i >= b;i --)
#define pb push_back
#define fr first
#define sd second
#define db double
typedef long long ll;
typedef unsigned long long ull;
using namespace std;
inline ll read()
{
	char ch = getchar();
	ll s = 0, w = 1;
	while(ch < '0' || ch > '9') {if(ch == '-') w = -1; ch = getchar();}
	while(ch >= '0' && ch <= '9') {s = s * 10 + ch - '0'; ch = getchar();}
	return s * w;
}
#define int ll
#define N 500010
int n, a[N];
signed main()
{
	n = read(); FOR(i,1,n) a[i] = read();
	int L = -1 , R = -1;
	FOR(i,2,n)if(a[i] / a[i - 1] == 1){L = i; break;}
	REP(i,n - 1,1)if(a[i+1] / a[i] == 1){R = i;break;}
	if(L < R){cout << "YES\n"; cout << L - 1 << " " << L << " " << R << " " << R + 1 << '\n'; return 0;}
	FOR(i,1,n)FOR(j,i+1,n)FOR(p,j+1,n)FOR(q,p+1,n)
	{
		if(a[j]/a[i]==a[q]/a[p])
		{
			cout << "YES\n";
			cout << i << " " << j << " " << p << " " << q << '\n';
			return 0; 
		}
	}
	cout << "NO\n";
	return 0;
}