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 pb push_back
#define ll long long
#define fi first
#define se second
const int nax=2e3+5;
const int MOD=1e9+2022;
int tab[nax];
int n;
int m;
void init(int N, int M, std::vector<int> P, std::vector<int> A){
n=N;m=M;
for (int i = 0; i < M; ++i)
{
tab[i]=A[i];
}
return;
}
int count_ways(int L, int R) {
int ans=0;
for (int i = 0; i < m; ++i)
{
if(L-n<=i&&i<=R-n) tab[i]^=1;
ans+=tab[i];
}
return ans;
}
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