Submission #1113553

#	Time	Username	Problem	Language	Result	Execution time	Memory
1113553		_8_8_	Game (APIO22_game)	C++17	2 / 100	14 ms	14460 KiB

game

#include "game.h"
 
#include <bits/stdc++.h>
using namespace std;
 
const int N = 3e5 + 12;

int n, k, s[N], t[N];
vector<int> g[N], gr[N];
void init(int nn, int kk) {
    n = nn;
    k = kk;
    for(int i = k; i < n; i++) {
        s[i] = -1, t[i] = k;
    }
    for(int i = 0; i < k; ++i) {
        s[i] = t[i] = i;
    }
}
int vis[N], timer;
void dfs(int v, int val) {
    vis[v] = timer;
    s[v] = max(s[v], val);
    for(int to:g[v]) if(vis[to] != timer && s[to] < val) {
        dfs(to, val);
    }
}
void dfs1(int v, int val) {
    t[v] = min(t[v], val);
    for(int to:g[v]) if(vis[to] != timer && t[to] > val) {
        dfs1(to, val);
    }
}
bool cyc = 0;
int add_teleporter(int u, int v) {
    if(max(u, v) < k) {
        if(u >= v) cyc = 1;
    }
    if(cyc) return 1;
    g[u].push_back(v);
    gr[v].push_back(u);
    timer++;
    dfs(v, s[u]);
    timer++;
    dfs1(u, t[v]);
    vis[v] = timer;
    for(int i = k; i < n; i++) {
        if(s[i] >= t[i]) {
            cyc = 1;
            return 1;
        }
    }
    return 0;
}  

• Subtask 1: 2 / 2
• Subtask 2: 0 / 10
• Subtask 3: 0 / 18
• Subtask 4: 0 / 30
• Subtask 5: 0 / 40