#include <bits/stdc++.h>
#include "paint.h"
using namespace std;
constexpr int N=2e4,M=2e3,K=1e5;
int n,m,k,ans;
unordered_set<int> mp[M];
unordered_map<int,int> dp[N];
bool can[N];
int minimumInstructions(int _n,int _m,int _k,vector<int>c,std::vector<int>a,std::vector<std::vector<int>>b) {
n=_n,m=_m,k=_k;
for(int i=0;i<m;++i) for(int j=0;j<a[i];++j)
mp[b[i][j]].insert(i);
for(int i=n-1;i>=0;--i){
for(auto&j:mp[c[i]]){
dp[i][j]=(i==n-1?1:dp[i+1][(j+1)%m]+1);
can[i]=can[i]||(dp[i][j]>=m);
}
}
for(int i=0,p=-1,q=-1;i<n;++i){
q=(can[i]?i+m-1:q);
if(i>p) p=q,++ans;
if(i>p) return -1;
}
return ans;
}
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