package main

import (
	"fmt"
	"math/rand"
	"sort"
)

func main() {
	var n int
	fmt.Scan(&n)
	a := make([]int, n)
	for i := 0; i < n; i++ {
		fmt.Scan(&a[i])
	}
	m := 100
	fmt.Println(m)
	flag := 0
	if allNotKadomatsu(a) {
		fmt.Println("0")
	}else{
		for i:=0; i<m; i++{
			if flag==1 {
				fmt.Println(0, 1)
			}
			b := rand.Int()%(n)
			c := rand.Int()%(n)
			fmt.Println(b+1, c+1)
			sort.IntSlice(a).Swap(b, c)
			if allNotKadomatsu(a) {
				flag = 1
			}
		}
	}
}

func allNotKadomatsu(a []int)bool{
	l := len(a)
	for i:=0;i<l-2;i++{
		if isKadomatsu(a[i],a[i+1],a[i+2]){
			return false
		}
	}
	return true
}

func isKadomatsu(a, b, c int)bool{
	if (b>a && b>c) || (b<a && b<c) {
		return true
	}
	return false
}