Submission #1201833

#TimeUsernameProblemLanguageResultExecution timeMemory
1201833adiyerGame (APIO22_game)C++20
0 / 100
176 ms327680 KiB
#include <bits/stdc++.h> using namespace std; const int MAXN = 5e5 + 11; int n, k, ok; int was[MAXN], r[MAXN], l[MAXN]; vector < int > g[MAXN], rg[MAXN]; void dfs(int v, int st){ if(v != st) r[v] = max(r[v], st); if(r[v] >= l[v]){ ok = 1; return; } for(int u : g[v]) if(r[u] < st) dfs(u, st); } void dfs2(int v, int st){ l[v] = min(l[v], st); if(r[v] >= l[v]){ ok = 1; return; } for(int u : rg[v]) if(l[u] > st) dfs2(u, st); } void init(int _n, int _k) { n = _n, k = _k; for(int i = 0; i < k - 1; i++) g[i].push_back(i + 1), rg[i + 1].push_back(i); for(int i = 0; i < n; i++) r[i] = -1, l[i] = n; } int add_teleporter(int u, int v){ g[u].push_back(v), rg[v].push_back(u), dfs(v, v), dfs2(u, u); return ok; } namespace { int read_int() { int x; if (scanf("%d", &x) != 1) { fprintf(stderr, "Error while reading input\n"); exit(1); } return x; } } // namespace
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