#include <iostream>
#include <cstdio>
#include <cstring>
#include <string>
#include <sstream>
#include <map>
#include <list>
#include <queue>
#include <set>
#include <algorithm>
#include <climits>
#include <cmath>
#include <cassert>
#include <stack>
#include <bitset>
#include <tr1/unordered_map>
#include <tr1/unordered_set>
#define mp make_pair
#define ll long long
#define ull unsigned long long
const int INF=(INT_MAX>>2);
using namespace std;
int a[100000];
int f[100000+1];
int main() {
// freopen("me.txt","r",stdin);
//freopen("out.txt","w",stdout);
int n,k;
cin>>n>>k;
for(int i=0;i<n;cin>>a[i++]) ;
int nusf=0;
int r1=0,r2=-1;
for(int i=0;i<n && r2==-1;++i) {
++f[a[i]];
nusf+=(f[a[i]]==1);
if(nusf==k) r2=i;
}
if(r1!=-1) for(;f[a[r1]]>1;++r1) --f[a[r1]];
if(r2!=-1) cout<<(r1+1)<<" "<<(r2+1);
if(r2==-1) puts("-1 -1");
return 0;
}