#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
template <class T>
using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
#define all(v) v.begin(), v.end()
#define logg(x) (31 - __builtin_clz(x))
#define llogg(x) (63 - __builtin_clzll(x))
#define mini(v) min_element(v.begin(), v.end())
#define maxi(v) max_element(v.begin(), v.end())
#define TIME cerr << double(clock() - st) / (double)CLOCKS_PER_SEC
#define sq(a) ((a)*(a))
#ifdef hocln
#include "deb.h"
#else
#define imie(...) ""
#define debug() cerr
#endif
typedef long long ll;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
typedef long double ld;
typedef tuple<ll, ll, ll> triple;
typedef tuple<ll, ll, ll, ll, ll> five;
typedef unsigned long long ull;
const long long INF = 4e18;
const int inf = 2e9;
const int MN = 3e5 + 15;
const int MX = 2e6 + 15;
const long long MOD = 1e9 + 7;
//const long long MOD = 998244353;
const long double PI = 3.141592653589793238462643383279502884197;
template<typename T, typename T2> bool chmax(T& a, const T2& b) { return a < b ? a = b, 1 : 0; }
template<typename T, typename T2> bool chmin(T& a, const T2& b) { return a > b ? a = b, 1 : 0; }
template<typename T> using vector2 = vector<vector<T>>;
const int dx[] = { 0, 0, 1, -1, 1, 1, -1, -1 };
const int dy[] = { 1, -1, 0, 0 , 1, -1, 1, -1};
std::random_device rd;
std::mt19937 gen(rd());
ll random(ll low, ll high) { uniform_int_distribution<> dist(low, high); return dist(gen); }
template<typename T1, typename T2> istream& operator>>(istream& is, pair<T1, T2>& p) {
is >> p.first;
return is >> p.second;
}
template<typename T> ostream& operator<<(ostream& os, const vector<T>& v) {
for (auto &i: v) os << i << ' ';
return os;
}
int tc = 0;
const int N = 3e5 + 15;
bool vis[N],vis2[N];
vector<int>adj[N];
int n, k;
void init(int _n, int _k) {
n = _n;
k = _k;
for(int i = 0;i < n;i++) adj[i].clear();
for(int i = 0;i < k-1;i++) adj[i].emplace_back(i+1);
}
inline bool bad(int a) {
vis2[a] = true;
vis[a] = true;
bool ok = false;
for(auto& i : adj[a]) {
if(vis2[i] && i < k) ok {
ok = true;
break;
}
if(!vis[i]) ok |= bad(i);
}
vis2[a] = false;
return ok;
}
int add_teleporter(int a, int b) {
for(int i = 0;i < n;i++) vis[i] = vis2[i] = false;
if(a == b && a < k) return true;
adj[a].emplace_back(b);
for(int i = 0;i < k;i++) {
if(!vis[i] && bad(i)) return true;
}
return false;
}
//inline void solve_test() {
//init(4,2);
//cout << add_teleporter(1,1);
//}
//int main()
//{
////srand(chrono::steady_clock::now().time_since_epoch().count());
////freopen("convention2.in", "r", stdin);
////freopen("convention2.out", "w", stdout);
////cout << "Case #" << tc << ": " << ans << '\n';
////cout << fixed << setprecision(7);
//ios::sync_with_stdio(0);
//cin.tie(0);cout.tie(0);
//int tt = 1;
////cin >> tt;
//while(tt--) {
//++tc;
//solve_test();
//}
//}
Compilation message
game.cpp: In function 'bool bad(int)':
game.cpp:68:26: error: expected ';' before '{' token
68 | if(vis2[i] && i < k) ok {
| ^~
| ;
game.cpp:68:24: warning: statement has no effect [-Wunused-value]
68 | if(vis2[i] && i < k) ok {
| ^~
