Submission #783976

#	Time	Username	Problem	Language	Result	Execution time	Memory
783976		Boas	Cave (IOI13_cave)	C++17	46 / 100	11 ms	452 KiB

cave

#include <bits/stdc++.h>
#include "cave.h"
using namespace std;
 
constexpr bool debug = false;
 
typedef vector<int> vi;
 
// map<vi, int> tryCombi;
 
int ownTryCombination(vi &switches)
{
    if (debug)
    {
        cerr << endl
             << "TryCombination: ";
        for (int t : switches)
        {
            cerr << t << " ";
        }
 
        cerr << endl;
    }
    int res;
    // if (tryCombi.find(switches) != tryCombi.end())
    //{
    // res = tryCombi[switches];
    //}
    // else
    {
        res = tryCombination(switches.data());
        // tryCombi[switches] = res;
    }
    if (debug)
        cerr << "Result: " << res << endl;
    return res;
}
 
void exploreCave(int N)
{
    vi switches(N, 0);
    vi minDist(N);
    vi maxDist(N, N);
    int d = ownTryCombination(switches);
    int nd = 0;
    while (d != -1)
    {
        if (nd == -1)
            break;
        for (int i = 0; i < N; i++)
        {
            if (minDist[i] == maxDist[i])
                continue;
            switches[i] = !switches[i];
            nd = ownTryCombination(switches);
            if (nd == -1)
                break;
            if (nd == d)
            {
                if (debug)
                    cerr << "minDist[" << i << "] = " << d + 1 << endl;
                minDist[i] = d + 1;
                switches[i] = !switches[i];
                d = nd;
            }
            else if (nd > d)
            {
                if (debug)
                    cerr << "min&maxDist[" << i << "] = " << d << endl;
                minDist[i] = d;
                maxDist[i] = d;
                d = nd;
            }
            else
            {
                if (debug)
                    cerr << "min&maxDist[" << i << "] = " << nd << endl;
                minDist[i] = nd;
                maxDist[i] = nd;
                switches[i] = !switches[i];
                // i--;
            }
        }
        if (nd == -1)
            break;
    }
    for (int i = 0; i < N; i++)
    {
        if (minDist[i] == maxDist[i])
            continue;
        switches[i] = !switches[i];
        int d = ownTryCombination(switches);
        minDist[i] = d;
        maxDist[i] = d;
        switches[i] = !switches[i];
    }
    answer(switches.data(), minDist.data());
    cerr << endl;
}

• Subtask 1: 12 / 12
• Subtask 2: 13 / 13
• Subtask 3: 21 / 21
• Subtask 4: 0 / 30
• Subtask 5: 0 / 24