#include "doll.h"
#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#include <debug.h>
#include "grader.cpp"
#endif
#define st first
#define nd second
#define pb push_back
#define pf push_front
#define _pb pop_back
#define _pf pop_front
#define lb lower_bound
#define ub upper_bound
#define mtp make_tuple
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
typedef long long ll; typedef unsigned long long ull;
typedef double db; typedef long double ldb;
typedef pair<int, int> pi; typedef pair<ll, ll> pll;
typedef vector<int> vi; typedef vector<ll> vll; typedef vector<pi> vpi; typedef vector<pll> vpll;
typedef string str;
template<typename T> T gcd(T a, T b) { return (b == 0? a : gcd(b, a % b)); }
template<typename T> T lcm(T a, T b) { return a / gcd(a, b) * b; }
#define FOR(i, l, r) for (int (i) = (l); (i) <= (r); ++(i))
#define FOS(i, r, l) for (int (i) = (r); (i) >= (l); --(i))
#define EACH(i, x) for (auto &(i) : (x))
#define WHILE while
#define file "TEST"
mt19937 rd(chrono::steady_clock::now().time_since_epoch().count());
ll rand(ll l, ll r) { return uniform_int_distribution<ll>(l, r)(rd); }
/*
Tran The Bao
CTL - Da Lat
Cay ngay cay dem nhung deo duoc cong nhan
*/
const int MAXM = 1e5 + 5;
int d[MAXM];
namespace subtask123 {
vi next[MAXM];
void create_circuit(int M, vi A) {
vi C(M + 1, 0), X, Y;
int N = sz(A);
next[0].pb(A[0]);
FOR(i, 0, N - 1) next[A[i]].pb(i == N - 1? 0 : A[i + 1]);
int S = 0;
FOR(i, 0, M) {
if (next[i].empty()) {
C[i] = 0;
continue;
}
if (sz(next[i]) == 1) {
C[i] = next[i][0];
continue;
}
if (sz(next[i]) == 2) {
C[i] = --S;
X.pb(next[i][0]);
Y.pb(next[i][1]);
continue;
}
if (sz(next[i]) == 3) {
C[i] = --S;
X.pb(S - 1);
Y.pb(S - 2);
--S;
X.pb(next[i][0]);
Y.pb(next[i][1]);
--S;
X.pb(S + 2);
Y.pb(next[i][2]);
continue;
}
C[i] = --S;
X.pb(S - 1);
Y.pb(S - 2);
--S;
X.pb(next[i][0]);
Y.pb(next[i][2]);
--S;
X.pb(next[i][1]);
Y.pb(next[i][3]);
}
answer(C, X, Y);
}
}
namespace subtask456 {
int M, N, S = 0;
vi A, X, Y;
void add(int u, int x, int y) {
WHILE(-u - 1 >= sz(X)) {
X.pb(0);
Y.pb(0);
}
X[-u - 1] = x;
Y[-u - 1] = y;
}
vi build(int l, int r) {
if (l == r) return {A[l]};
int mid = (l + r) / 2;
vi left = build(l, mid);
vi right = build(mid + 1, r);
int root = --S;
if (sz(left) > sz(right)) {
if (sz(right) == 1) {
int u = right[0];
--S;
add(S, u, root);
right = {S, S};
}
else {
vi nright = {right[0]};
FOR(i, 1, sz(right) - 1) {
int u = right[i];
int x = X[-u - 1], y = Y[-u - 1];
add(u, S - 1, S - 2);
nright.pb(S - 1);
nright.pb(S - 2);
--S;
add(S, x, root);
--S;
add(S, y, root);
}
right = nright;
}
}
add(root, left[0], right[0]);
vi ans = {root};
EACH(i, left) ans.pb(i);
EACH(i, right) ans.pb(i);
return ans;
}
void create_circuit(int M, vi A) {
A.pb(0);
N = sz(A);
::M = M;
::A = A;
build(0, N - 1);
vi ans = build(0, N - 1);
int root = ans[0];
vi C(M + 1);
FOR(i, 0, M - 1) C[i] = root;
answer(C, X, Y);
}
}
void create_circuit(int M, std::vector<int> A) {
int N = A.size();
bool sub123 = 1;
FOR(i, 0, N - 1) {
++d[A[i]];
if (d[A[i]] > 4) sub123 = 0;
}
if (sub123) {
subtask123::create_circuit(M, A);
return;
}
subtask456::create_circuit(M, A);
}
/*
4 4
1 2 1 3
*/
Compilation message
doll.cpp: In function 'void subtask123::create_circuit(int, vi)':
doll.cpp:26:31: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
26 | #define FOR(i, l, r) for (int (i) = (l); (i) <= (r); ++(i))
| ^
doll.cpp:46:9: note: in expansion of macro 'FOR'
46 | FOR(i, 0, N - 1) next[A[i]].pb(i == N - 1? 0 : A[i + 1]);
| ^~~
doll.cpp:26:31: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
26 | #define FOR(i, l, r) for (int (i) = (l); (i) <= (r); ++(i))
| ^
doll.cpp:48:9: note: in expansion of macro 'FOR'
48 | FOR(i, 0, M) {
| ^~~
doll.cpp: In function 'vi subtask456::build(int, int)':
doll.cpp:26:31: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
26 | #define FOR(i, l, r) for (int (i) = (l); (i) <= (r); ++(i))
| ^
doll.cpp:114:17: note: in expansion of macro 'FOR'
114 | FOR(i, 1, sz(right) - 1) {
| ^~~
doll.cpp:28:31: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
28 | #define EACH(i, x) for (auto &(i) : (x))
| ^
doll.cpp:130:9: note: in expansion of macro 'EACH'
130 | EACH(i, left) ans.pb(i);
| ^~~~
doll.cpp:28:31: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
28 | #define EACH(i, x) for (auto &(i) : (x))
| ^
doll.cpp:131:9: note: in expansion of macro 'EACH'
131 | EACH(i, right) ans.pb(i);
| ^~~~
doll.cpp: In function 'void subtask456::create_circuit(int, vi)':
doll.cpp:137:11: error: '::M' has not been declared; did you mean 'subtask456::M'?
137 | ::M = M;
| ^
| subtask456::M
doll.cpp:89:9: note: 'subtask456::M' declared here
89 | int M, N, S = 0;
| ^
doll.cpp:138:11: error: '::A' has not been declared; did you mean 'subtask456::A'?
138 | ::A = A;
| ^
| subtask456::A
doll.cpp:90:8: note: 'subtask456::A' declared here
90 | vi A, X, Y;
| ^
doll.cpp:26:31: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
26 | #define FOR(i, l, r) for (int (i) = (l); (i) <= (r); ++(i))
| ^
doll.cpp:143:9: note: in expansion of macro 'FOR'
143 | FOR(i, 0, M - 1) C[i] = root;
| ^~~
doll.cpp: In function 'void create_circuit(int, std::vector<int>)':
doll.cpp:26:31: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
26 | #define FOR(i, l, r) for (int (i) = (l); (i) <= (r); ++(i))
| ^
doll.cpp:150:5: note: in expansion of macro 'FOR'
150 | FOR(i, 0, N - 1) {
| ^~~
