Submission #577575

#	Time	Username	Problem	Language	Result	Execution time	Memory
577575		Mazaalai	Game (IOI14_game)	C++17	15 / 100	2 ms	384 KiB

game

#include "game.h"
#include <bits/stdc++.h>
#define lb lower_bound
#define LINE "------------\n"
using namespace std;
using PII = pair <int, int>;
const int N = 1500;
// bool path[N][N];
set <int> vals[N];
int n;
int par[N];
void initialize(int _n) {
    n = _n;
    for (int i = 0; i < n; i++)
    for (int j = i+1; j < n; j++) {
        vals[i].insert(j);
        vals[j].insert(i);
    }
    for (int i = 0; i < n-1; i++) {
        par[i] = n-1;
    }
}

int hasEdge(int u, int v) {
    // cout << LINE;
    // cout << u << " " << v << '\n';
    // for (int i = 0; i < n-1; i++) cout << i << ": " <<par[i] << '\n';
    if (par[u] != v && par[v] != u) {
        vals[u].erase(v);
        vals[v].erase(u);
        return 0;
    }
    if (par[v] == u) swap(u, v);
    bool res = 1;
    for (auto& el : vals[u]) {
        if (el != par[u] && par[el] != u) {
            par[u] = el;
            vals[u].erase(v);
            vals[v].erase(u);
            res = 0;
            break;
        }
    }
    return res;
}

• Subtask 1: 15 / 15
• Subtask 2: 0 / 27
• Subtask 3: 0 / 58