#include "game.h"
#include <bits/stdc++.h>
using namespace std;
const int N = 3e5 + 12;
vector<int> g[N],gr[N];
set<int> L[N * 3],R[N * 3];
int k;
void build(int v = 1,int tl = 0,int tr = k - 1) {
int tm = (tl + tr) >> 1;
for(int i = tl;i <= tr;i++) {
valr[i] = max(valr[i],tm);
if(i <= tm) {
L[v].insert(i);
}
if(i >= tm) {
R[v].insert(i);
}
}
if(tl == tr) return;
build(v + v,tl,tm);
build(v + v + 1,tm + 1,tr);
}
int vall[N],valr[N];
void init(int n, int K) {
k = K;
for(int i = 0;i <= k - 2;i++) {
g[i].push_back(i + 1);
gr[i + 1].push_back(i);
}
build();
}
bool CYC = false;
bool check = false;
void add(int x,int y,int v = 1,int tl = 0,int tr = k - 1) {
if(CYC) return;
int tm = (tl + tr) >> 1;
bool ok = false,ok1 = false;
function<void(int)> dfs = [&](int u){
R[v].insert(u);
valr[u] = max(valr[u],tm);
ok = 1;
if(L[v].find(u) != L[v].end()) {
CYC = 1;
return;
}
for(int to:g[u]) {
if(valr[to] > tm) continue;
if(R[v].find(to) == R[v].end()) {
dfs(to);
}
if(CYC) return;
}
if(CYC) return;
};
if(R[v].find(x) != R[v].end()) {
if(L[v].find(y) != L[v].end()) {
CYC = 1;
return;
}
if(R[v].find(y) == R[v].end() && valr[y] <= tm) dfs(y);
if(tl != tr) add(x,y,v + v + 1,tm + 1,tr);
} else {
if(tl != tr) add(x,y,v + v,tl,tm);
}
}
void addl(int x,int y,int v = 1,int tl = 0,int tr = k - 1) {
if(CYC) return;
int tm = (tl + tr) >> 1;
function<void(int)> dfs1 = [&](int u){
if(R[v].find(u) != R[v].end()) {
CYC = 1;
return;
}
L[v].insert(u);
for(int to:gr[u]) {
if(L[v].find(to) == L[v].end()) {
dfs1(to);
}
if(CYC) return;
}
if(CYC) return;
};
if(L[v].find(y) != L[v].end()) {
if(R[v].find(x) != R[v].end()) {
CYC = 1;
return;
}
if(L[v].find(x) == L[v].end()) dfs1(x);
if(tl != tr) addl(x,y,v + v,tl,tm);
} else {
if(tl != tr) addl(x,y,v+v+1,tm+1,tr);
}
}
int add_teleporter(int u, int v) {
if(max(u,v) <= k - 1) {
if(u >= v) {
CYC = 1;
return 1;
}
return 0;
}
if(!check) {
addl(13,14);
add(k-2,k-1);
check = 1;
}
if(CYC) return 1;
g[u].push_back(v);
gr[v].push_back(u);
add(u,v);
addl(u,v);
return CYC;
}
Compilation message
game.cpp: In function 'void build(int, int, int)':
game.cpp:12:9: error: 'valr' was not declared in this scope
12 | valr[i] = max(valr[i],tm);
| ^~~~
game.cpp: In function 'void add(int, int, int, int, int)':
game.cpp:38:21: warning: unused variable 'ok1' [-Wunused-variable]
38 | bool ok = false,ok1 = false;
| ^~~
