#include "paint.h"
#include <bits/stdc++.h>
using namespace std;
int minimumInstructions( int N, int M, int K, vector<int> C, vector<int> A, vector<vector<int>> B) {
vector<vector<int>> f(K);
vector<int> mem(M), an;
for(int i = 0; i < M; ++i) for(int j: B[i]) f[j].emplace_back(i);
for(int i = 0, ct = 0, tem; i < N; ++i) {
if(i >= M) for(int j: f[C[i - M]]) if(--mem[j] == M - 1) --ct;
for(int j: f[C[i]]) if(++mem[j] == M) ++ct;
if(ct) an.emplace_back(i);
tem = mem[M - 1];
for(int i = M - 1; i; --i) mem[i] = mem[i - 1];
mem[0] = tem;
}
for(int i = 0, ct = 1, tem; an.size(); i = tem, ++ct){
tem = *(upper_bound(an.begin(), an.end(), i + M) - 1);
if(tem == N - 1) return ct;
if(tem == i) return -1;
}
return -1;
}
