#include <bits/stdc++.h>
#define ll long long
#include "game.h"
using namespace std;
const int N=1e6+7;
vector <ll> g[N];
ll used[N];
void init(int n, int k) {
for (int i=0;i<k-1;i++){
g[i].push_back(i+1);
}
}
int add_teleporter(int u, int v) {
if (u == v && u < k) return 1;
g[u].push_back(v);
bool ok=0;
fill(used, used+10000, 0);
function <void(ll,ll)> dfs = [&] (ll v, ll p){
used[v]=1;
for (auto l:g[v]){
if (used[l] == 0) dfs(l, v);
else if (used[l] == 1 && l != p){
ok=1;
return ;
}
}
used[v]=2;
};
dfs(1, 0);
if (ok) return 1;
else return 0;
}
Compilation message
game.cpp: In function 'int add_teleporter(int, int)':
game.cpp:15:23: error: 'k' was not declared in this scope
15 | if (u == v && u < k) return 1;
| ^
