Submission #713452

#	Time	Username	Problem	Language	Result	Execution time	Memory
713452		Spade1	Game (IOI14_game)	C++14	15 / 100	4 ms	700 KiB

game

#include <bits/stdc++.h>
#include "game.h"
//#include "grader.cpp"
using namespace std;

const int maxN = 2000;
set<int> s[maxN];
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 (mark[i]) return;
    mark[i] = 1;
    for (auto j : s[i]) {
        s[j].erase(i);
        if (s[j].size() == 1) dfs(j);
    }
}

int hasEdge(int u, int v) {
    if (s[u].size() != 1) swap(u, v);
    if (s[u].size() == 1) {
        s[u].erase(v);
        s[v].erase(u);
        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