Cod sursa(job #2453077)

Utilizator pregoliStana Andrei pregoli Data 2 septembrie 2019 13:34:41
Problema Rj Scor 0
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 2.97 kb
#include <bits/stdc++.h>
using namespace std;

ifstream fin("br.in");
ofstream fout("br.out");

#define MAXNM 105
const short dx[] = {-1,-1,0,1,1,1,0,-1};
const short dy[] = {0,1,1,1,0,-1,-1,-1};
const short dirN = 8;
int n, m, dis[MAXNM][MAXNM], dis2[MAXNM][MAXNM], board[MAXNM][MAXNM];
queue < pair <int, int> > tail;
pair <int, int> res(INT_MAX, INT_MAX);
int disrj, disp, xj, yj;

void Read()
{
    char c[MAXNM];
    fin >> n >> m;
    fin.getline(c, MAXNM);
    for (int i = 1; i <= n; i++)
    {
        fin.getline(c, MAXNM);
        for (int j = 0; c[j]; j++)
        {
            switch (c[j])
            {
            case 'X':
                board[i][j + 1] = 1;
                break;
            case 'R':
                board[i][j + 1] = 2;
                tail.push(make_pair(i, j + 1));
                dis[i][j + 1] = 1;
                break;
            case 'J':
                board[i][j + 1] = 3;
                dis[i][j + 1] = INT_MAX;
                dis2[i][j + 1] = 1;
                xj = i;
                yj = j + 1;
                break;
            }
        }
    }
    return;
}

inline bool isOk(int x, int y)
{
    if (x < 1 || y < 1 || x > n || y > m || board[x][y] == 1)
        return false;
    return true;
}

void Lee()
{
    int x, y, xNext, yNext;
    bool ok = true;
    while (!tail.empty() && ok)
    {
        x = tail.front().first;
        y = tail.front().second;
        tail.pop();
        for (int dir = 0; dir < dirN && ok; dir++)
        {
            xNext = x + dx[dir];
            yNext = y + dy[dir];
            if (isOk(xNext, yNext) && !dis[xNext][yNext])
            {
                dis[xNext][yNext] = dis[x][y] + 1;
                tail.push(make_pair(xNext, yNext));
            }
            else if (dis[xNext][yNext] == INT_MAX)
            {
                disrj = dis[x][y] + 1;
                ok = false;
            }
        }
    }
    return;
}

void Lee2()
{
    int x, y, xNext, yNext;
    bool ok =true;
    while (!tail.empty() && ok)
    {
        x = tail.front().first;
        y = tail.front().second;
        tail.pop();
        for (int dir = 0; dir < dirN && ok; dir++)
        {
            xNext = x + dx[dir];
            yNext = y + dy[dir];
            if (isOk(xNext, yNext) && !dis2[xNext][yNext])
            {
                dis2[xNext][yNext] = dis2[x][y] + 1;
                tail.push(make_pair(xNext, yNext));
                if (dis[xNext][yNext] == disp && (xNext < res.first || yNext < res.second))
                {
                    res.first = xNext;
                    res.second = yNext;
                }
            }
        }
    }
}

int main()
{
    Read();
    Lee();
    disp = (disrj / 2) + 1;
    fout << disp << ' ';
    while (!tail.empty())
        tail.pop();
    tail.push(make_pair(xj, yj));
    Lee2();
    fout<< res.first << ' ' << res.second;
    //*/
    return 0;
}