#include <bits/stdc++.h>
#include "bubblesort2.h"
#pragma GCC optimize("O3,unroll-loops")
#define pb push_back
#define F first
#define S second
#define all(a) a.begin(),a.end()
#define pii pair <int,int>
#define PII pair<pii , pii>
#define ld long double
#define int long long
#define sz(v) (int)v.size()
#define rep(i , a , b) for(int i=a;i <= (b);i++)
#define per(i , a , b) for(int i=a;i >= (b);i--)
using namespace std ;
const int maxn = 1e6 + 10 , inf= 2e9 , mod = 1e9 + 7 , sq = 360 ;
int fen[4*maxn] ;
vector <int> res , cm;
void upd(int x ,int w){
x++;
while(x <= sz(cm)){
fen[x]+=w;
x+=x&-x;
}
}
int que(int x){
x++;int ans =0 ;
while(x){
ans+=fen[x];
x-=x&-x;
}
return ans ;
}
std::vector<int> countScans(std::vector<int>A , std::vector<int>X, std::vector <int> V){
int n = sz(A) , q =sz(X) ;
rep(i , 0 , n-1)cm.pb(A[i]);
rep(i , 0 ,q-1)cm.pb(V[i]) ;
sort(all(cm)) ;
cm.resize(unique(all(cm))-cm.begin()) ;
rep(i , 0 , n-1){
A[i] = lower_bound(all(cm) , A[i]) -cm.begin() ;
}
rep(i , 0 , q-1){
A[X[i]] = lower_bound(all(cm),V[i])-cm.begin() ;
int ans =0 ;
rep(j , 0 , n-1){
ans = max(ans , j-que(A[j])) ;
upd(A[j] , 1);
}
rep(i , 0 , sz(cm))fen[i]=0;
res.pb(ans);
}
return res;
}
/*
signed main(){
ios::sync_with_stdio(0);cin.tie(0);
int n , q ;
cin >> n >> q;
vector <int> a ;
rep(i , 1, n){
int x;
cin >> x ;
a.pb(x);
}
vector <int> X , V ;
rep(i , 1, q){
int x, v;
cin >> x>> v ;
X.pb(x);V.pb(v);
}
vector <int> ans = countScans(a,X,V) ;
for(int x : ans){
cout << x << "\n" ;
}
return 0;
}
*/
/*
*/
Compilation message
/usr/bin/ld: /tmp/cc6AjIka.o: in function `main':
grader.cpp:(.text.startup+0x19f): undefined reference to `countScans(std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status
