#include <bits/stdc++.h>
#include "game.h"
using namespace std;
const int mxN = 30055;
vector <int> g[mxN], rg[mxN];
int mn[mxN], mx[mxN];
void init (int n, int k) {
for (int i = 0; i < n; ++i) {
mn[i] = mxN, mx[i] = -mxN;
if (i < k) mn[i] = mx[i] = i;
}
for (int i = 0; i < k - 1; ++i) {
g[i].push_back(i + 1);
rg[i + 1].push_back(i);
}
}
void upd_mn (int u, int c) {
if (mn[u] < c) return;
mn[u] = c;
for (auto v : rg[u]) {
if (mn[v] > c) {
upd_mn(v, c);
}
}
}
void upd_mx (int u, int c) {
if (mx[u] > c) return;
mx[u] = c;
for (auto v : g[u]) {
if (mx[v] < c) {
upd_mx(v, c);
}
}
}
int add_teleporter (int u, int v) {
g[u].push_back(v);
rg[v].push_back(u);
upd_mn(u, mn[v]);
upd_mx(v, mx[u]);
return mx[u] >= mn[v];
}
