#include "paint.h"
#include <iostream>
#include <vector>
#include <queue>
#include <array>
#include <algorithm>
#define ll int
using namespace std;
ll p = -1, dp[2][50000], ver[2][50000];
vector <ll> color[100000], V;
bool X[100000];
int minimumInstructions(
int N, int M, int K, std::vector<int> C,
std::vector<int> A, std::vector<std::vector<int>> B) {
for (int i=0; i<M; ++i) {
for (int j=0; j<A[i]; ++j) {
color[B[i][j]].push_back(i);
}
}
for (int i=0; i<N; ++i) {
for (auto u : color[C[i]]) {
if (ver[0][(u+M-1)%M] == i) {
dp[1][u] = dp[0][(u+M-1)%M] + 1;
if (dp[1][u] >= M) X[i-M+1] = 1;
}
else dp[1][u] = 1;
ver[1][u] = i+1;
}
swap(dp[0], dp[1]);
swap(ver[0], ver[1]);
}
for (int i=0; i<N; ++i) {
if (X[i]) V.push_back(i);
}
p = 0;
int f = 0;
while (p < N) {
auto it = lower_bound(V.begin(), V.end(), p+1);
if (it == V.begin()) return -1;
it = prev(it);
if (*it+M <= p) return -1;
p = *it+M;
++f;
}
return f;
}
