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 "paint.h"
//Dost Seferoğlu
#include <bits/stdc++.h>
#pragma GCC optimize("O3,unroll-loops")
using namespace std;
//#define int long long
#define pii pair<int,int>
#define ff first
#define ss second
#define sp << " " <<
#define all(cont) cont.begin(),cont.end()
#define vi vector<int>
const int MOD = 1e9+7,inf = 2e9;
const int N = 2e5;
struct ST {
vi t;
ST(int nn) {
t.assign(4*nn+1,inf);
}
void update(int node,int l,int r,int L,int R,int v) {
if (l > R || r < L) return;
if (l >= L && r <= R) {
t[node] = min(t[node],v);
return;
}
int m = (l+r) >> 1;
update(2*node,l,m,L,R,v);
update(2*node+1,m+1,r,L,R,v);
}
int query(int node,int l,int r,int p) {
if (l == r) return t[node];
int m = (l+r) >>1;
if (p<=m) return min(query(2*node,l,m,p),t[node]);
else return min(query(2*node+1,m+1,r,p),t[node]);
}
};
int minimumInstructions(
int N, int M, int K, std::vector<int> C,
std::vector<int> A, std::vector<std::vector<int>> B) {
vector<int> f[K];
for (int i=0;i<M;i++) {
for (int j=0;j<A[i];j++) {
f[B[i][j]].push_back(i);
}
}
vi go(N,0);
go[N-1] = 1;
vector<bool> cool(N,0);
if (M == 1) cool[N-1] = true;
vi lst(M,0);
for (auto it : f[C[N-1]]) lst[it] = 1;
for (int i=N-2;i>=0;i--) {
go[i] = 1;
vector<pii> ps;
for (auto it : f[C[i]]) {
auto iter = lower_bound(all(f[C[i+1]]),((it+1)%M));
if (iter != f[C[i+1]].end() && *iter == (it+1)%M) {
go[i] = max(go[i],min(M,lst[*iter]+1));
ps.push_back({it,min(M,lst[*iter]+1)});
}
}
for (int i=0;i<M;i++) lst[i] = 1;
for (auto it : ps) lst[it.ff] = it.ss;
if (go[i] == M) cool[i] = true;
}
vi dp(N+2,0);
ST st(N+1);
st.update(1,1,N+1,1,1,0);
for (int i=1;i<=N;i++) {
dp[i] = st.query(1,1,N+1,i);
if (cool[i-1]) st.update(1,1,N+1,i+1,i+M,dp[i]+1);
}
if (st.query(1,1,N+1,N+1) >= inf) return -1;
return st.query(1,1,N+1,N+1);
}
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