This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define fi first
#define se second
#define pb push_back
#define sz(a) (int)a.size()
#define vec(...) vector<__VA_ARGS__>
#define _3Pxrs5V ios::sync_with_stdio(0),cin.tie(0)
typedef long long ll;
using pii=pair<int,int>;
using vi=vector<int>;
void print(){cout<<'\n';}
template<class h,class...t>
void print(const h&v,const t&...u){cout<<v<<' ',print(u...);}
//e
const int inf=200011;
const int _n=140002;
const int _k=50;
struct node{
int res;
int l[_k+1],r[_k+1];
};
node seg[_n];
int k; // initial k
void build(int node,int l,int r){
seg[node].res=inf;
rep(i,k){
seg[node].l[i]=inf;
seg[node].r[i]=-inf;
}
if(l==r-1){
return;
}
int m=(l+r)>>1;
build(node*2,l,m);
build(node*2+1,m,r);
}
void update(int node,int l,int r,int pos,int v){
if(l==r-1){
rep(i,k){
seg[node].l[i]=inf;
seg[node].r[i]=-inf;
}
seg[node].l[v]=seg[node].r[v]=l;
seg[node].res=inf;
return;
}
int m=(l+r)>>1;
if(pos<m){
update(node*2,l,m,pos,v);
}else{
update(node*2+1,m,r,pos,v);
}
seg[node].res=inf;
seg[node].res=min(seg[node*2].res,seg[node*2+1].res);
vec(pii) evs;
multiset<int> mst;
rep(i,k){
// if(node==3) cout<<seg[node*2+1].l[i]<<" "<<seg[node*2].r[i]<<"\n";
evs.emplace_back(seg[node*2+1].l[i],seg[node*2].r[i]);
mst.insert(seg[node*2].r[i]);
seg[node].r[i]=max(seg[node*2+1].r[i],(seg[node*2].l[i]!=inf?seg[node*2].l[i]:-inf));
seg[node].l[i]=min((seg[node*2+1].r[i]!=-inf?seg[node*2+1].r[i]:inf),seg[node*2].l[i]);
}
print("\n....");
sort(evs.begin(), evs.end());
rep(i,sz(evs)-1){
pii p=evs[i];
auto it=mst.find(p.se);
mst.erase(it);
int _r=evs[i].fi;
int _l=*mst.begin();
if(abs(_l)==inf or abs(_r)==inf) continue;
seg[node].res=min(seg[node].res,_r-_l+1);
}
// if(node==3){
// print(seg[node].res);
// }
// print(l,r,m,node);
}
signed main(){
_3Pxrs5V;
int n,q;
cin>>n>>k>>q;
build(1,0,n);
rep(i,n){
int v;
cin>>v;
v-=1;
update(1,0,n,i,v);
}
rep(_,q){
int t;
cin>>t;
if(t==1){
int i,v;
cin>>i>>v;
i-=1,v-=1;
// print(i,v);
update(1,0,n,i,v);
}else{
int res=seg[1].res;
print(res>=inf?-1:res);
// cout<<seg[1].res<<"\n";/
}
}
// print(seg[1].res);
}
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