Submission #418663

#	Time	Username	Problem	Language	Result	Execution time	Memory
418663		VladM	Cop and Robber (BOI14_coprobber)	C++14	16 / 100	144 ms	262148 KiB

coprobber

#include "coprobber.h"
#include <bits/stdc++.h>

using namespace std;

vector<int> vec[MAX_N];

int tin[MAX_N], tout[MAX_N], timer, pos, par[MAX_N];

void dfs(int v, int p)
{
    tin[v]=++timer;
    par[v]=p;
    int ns=vec[v].size();
    for(int i=0; i<ns; i++)
    {
        int to=vec[v][i];
        if(to==p) continue;
        dfs(to, v);
    }
    tout[v]=timer;
    return;
}

int start(int N, bool A[MAX_N][MAX_N])
{
    for(int i=0; i<N; i++)
    {
        for(int j=0; j<N; j++)
        {
            if(j==i) continue;
            if(A[i][j]) vec[i].push_back(j);
        }
    }
    dfs(0, -1);
    pos=0;
    return 0;
}

int nextMove(int R)
{
    int ns=vec[pos].size();
    for(int i=0; i<ns; i++)
    {
        int to=vec[pos][i];
        if(to==par[pos]) continue;
        if(tin[to]<=tin[R] && tout[R]<=tout[to])
        {
            pos=to;
            return to;
        }
    }
    return 0;
}

• Subtask 1: 16 / 16
• Subtask 2: 0 / 14
• Subtask 3: 0 / 30
• Subtask 4: 0 / 40