#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;
}