Submission #713455

#	Time	Username	Problem	Language	Result	Execution time	Memory
713455		Spade1	Game (IOI14_game)	C++14	15 / 100	4 ms	724 KiB

game

#include <bits/stdc++.h>
#define pii pair<int, int>
#include "game.h"
//#include "grader.cpp"
using namespace std;

const int maxN = 2000;
set<int> s[maxN];
map<pii, bool> mp;
bool mark[maxN];

void initialize(int n) {
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < n; ++j) {
            if (i == j) continue;
            s[i].insert(j);
            s[j].insert(i);
        }
    }
}

void dfs(int i) {
    if (s[i].empty()) return;
    set<int> mem;
    auto it = s[i].begin();
    while (it != s[i].end()) {
        int j = *it;
        if (s[i].size() == 1) mp[{min(i, j), max(i, j)}] = 1;
        s[i].erase(it++);
        s[j].erase(i);
        if (s[j].size() == 1) dfs(j);
    }
}

int hasEdge(int u, int v) {
    if (u > v) swap(u, v);
    if (mp.count({u, v})) return 1;
    s[u].erase(v);
    s[v].erase(u);
    if (s[u].size() == 1) dfs(u);
    if (s[v].size() == 1) dfs(v);
    return 0;
}

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