#include <bits/stdc++.h>
using namespace std;
vector<int> V;
void init(int N, int M, vector<int> P,vector<int> A){
V=A;
}
int count_ways(int a,int b){
a--;
b--;
for(int i=a;i<=b;i++){
if(V[i]==0){
V[i]=1;
}else{
V[i]=0;
}
}
int ans=0;
for(int i=0;i<V.size();i++){
ans+=V[i];
}
return ans;
}
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