#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<int> liked_by(k,-1);
for(int i = 0; i < m; i++){
for(int j = 0; j < a[i]; j++){
liked_by[b[i][j]] = i;
}
}
for(int i = 0; i < n; i++){
if(liked_by[c[i]] == -1) return -1;
}
for(int i = 1; i < n; i++){
if(liked_by[c[i]] != ((liked_by[c[i-1]] + 1) % m)) return -1;
}
return (n+m-1)/m;
}
// int main() {
// int N, M, K;
// assert(3 == scanf("%d %d %d", &N, &M, &K));
// std::vector<int> C(N);
// for (int i = 0; i < N; ++i) {
// assert(1 == scanf("%d", &C[i]));
// }
// std::vector<int> A(M);
// std::vector<std::vector<int>> B(M);
// for (int i = 0; i < M; ++i) {
// assert(1 == scanf("%d", &A[i]));
// B[i].resize(A[i]);
// for (int j = 0; j < A[i]; ++j) {
// assert(1 == scanf("%d", &B[i][j]));
// }
// }
// int minimum_instructions = minimumInstructions(N, M, K, C, A, B);
// printf("%d\n", minimum_instructions);
// return 0;
// }