Submission #729161

#	Time	Username	Problem	Language	Result	Execution time	Memory
729161		sofija6	Game (IOI14_game)	C++14	0 / 100	1 ms	340 KiB

game

#include <bits/stdc++.h>
#define MAXN 1510
using namespace std;
set<int> G[MAXN],a,b;
void initialize(int n)
{
    for (int i=0;i<n;i++)
    {
        for (int j=0;j<n;j++)
        {
            if (i!=j)
                G[i].insert(j);
        }
    }
}
void DFS(int i,pair<int,int> skipp,set<int> &s)
{
    s.insert(i);
    for (int next : G[i])
    {
        if ((i==skipp.first && next==skipp.second) || (i==skipp.second && next==skipp.first))
            continue;
        if (!s.count(next))
        {
            s.insert(next);
            DFS(next,skipp,s);
        }
    }
}
bool Check(int u,int v)
{
    a.clear();
    b.clear();
    DFS(u,{u,v},a);
    DFS(v,{u,v},b);
    for (auto i : a)
    {
        if (!b.count(i))
            return true;
    }
    for (auto i : b)
    {
        if (!a.count(i))
            return true;
    }
}
int hasEdge(int u, int v)
{
    if (Check(u,v))
        return true;
    G[u].erase(v);
    G[v].erase(u);
    return false;
}

Compilation message (stderr)

game.cpp: In function 'bool Check(int, int)':
game.cpp:46:1: warning: control reaches end of non-void function [-Wreturn-type]
   46 | }
      | ^

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