// by me
#include "bubblesort2.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define endl '\n'
#define all(x) x.begin(), x.end()
std::vector<int> countScans(std::vector<int> A, std::vector<int> X, std::vector<int> V){
int Q = X.size();
int N = A.size();
vector<int> ans(Q, 0);
vector<set<int>> f(101);
for(int i = 0; i < N; i++){
f[A[i]].insert(i);
}
for(int i = 0; i < Q; i++){
f[A[X[i]]].erase(X[i]);
A[X[i]] = V[i];
f[A[X[i]]].insert(X[i]);
int x = 0;
for(auto st : f){
if(st.empty()) continue;
x += st.size();
int mx = *st.rbegin();
ans[i] = max(ans[i], mx - x + 1);
}
}
return ans;
}
//
/*
int readInt(){
int i;
if(scanf("%d",&i)!=1){
fprintf(stderr,"Error while reading input\n");
exit(1);
}
return i;
}
int main(){
int N,Q;
N=readInt();
Q=readInt();
std::vector<int> A(N);
for(int i=0;i<N;i++)
A[i]=readInt();
std::vector<int> X(Q),V(Q);
for(int j=0;j<Q;j++){
X[j]=readInt();
V[j]=readInt();
}
std::vector<int> res=countScans(A,X,V);
for(int j=0;j<int(res.size());j++)
printf("%d\n",res[j]);
}
//*/
// by me
