Cod sursa(job #2572927)

Utilizator Octav02Cosofret Octavian-Stefan Octav02 Data 5 martie 2020 14:58:14
Problema Rj Scor 50
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 3.72 kb
#include <fstream>

#include <queue>

using namespace std;

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

queue <pair <int,int> > coada;
int iR, jR, iF, jF;
char A[101][101];
int mt[101][101], R[101][101], J[101][101], linii, coloane;

int di[]={1, 1, 1, 0, 0, -1, -1, -1};
int dj[]={1, 0, -1, 1, -1, 1, 0, -1};
//bool vizitat[101][101];

bool OK(int i, int j) {
    if (i < 1 || j < 1 || i > linii || j > coloane) {
        return false;
    }
    if (mt[i][j] != 0) {
        return false;
    }
    return true;
}
void Lee1 (int startx, int starty) {
    coada.push(make_pair(startx, starty));
//    vizitat[startx][starty] = true;
    while (!coada.empty()) {
        int i = coada.front().first, j = coada.front().second;
        coada.pop();
        for (int k = 0; k < 8; k++) {
            int i_urmator = i + di[k], j_urmator = j + dj[k];
            if (OK(i_urmator, j_urmator)) {
                if (R[i_urmator][j_urmator] == 0) {
                    coada.push(make_pair(i_urmator, j_urmator));
//                    vizitat[i_urmator][j_urmator] = true;
                    R[i_urmator][j_urmator] = R[i][j] + 1;
                }
            }
        }
    }
}
void Lee2 (int startx, int starty) {
    coada.push(make_pair(startx, starty));
//    vizitat[startx][starty] = true;
    while (!coada.empty()) {
        int i = coada.front().first, j = coada.front().second;
        coada.pop();
        for (int k = 0; k < 8; k++) {
            int i_urmator = i + di[k], j_urmator = j + dj[k];
            if (OK(i_urmator, j_urmator)) {
                if (J[i_urmator][j_urmator] == 0) {
                    coada.push(make_pair(i_urmator, j_urmator));
//                    vizitat[i_urmator][j_urmator] = true;
                    J[i_urmator][j_urmator] = J[i][j] + 1;
                }
            }
        }
    }
}
int main() {
    fin >> linii >> coloane;
    fin.get();
    for (int i = 1; i <= linii; i++) {
        fin.getline(A[i], 101);
    }
    for (int i = 1; i <= linii; i++) {
        for (int j = 0; j < coloane; j++) {
            if (A[i][j] == ' ') {
                mt[i][j + 1] = 0;
            }
            else if (A[i][j] == 'X') {
                mt[i][j + 1] = -1;
            }
            else if (A[i][j] == 'R') {
                mt[i][j + 1] = 0;
                iR = i;
                jR = j + 1;
            }
            else if (A[i][j] == 'J') {
                mt[i][j + 1] = 0;
                iF = i;
                jF = j + 1;
            }
        }
    }
    Lee1(iR,jR);
    Lee2(iF,jF);
    int minim = 10000000000, lr = 0, cr = 0;
    for (int i = 1; i <= linii; i++) {
        for (int j = 1; j <= coloane; j++) {
            if (R[i][j] == J[i][j] && R[i][j] > 0) {
                int rez = R[i][j];
                if (rez < minim) {
                    minim = rez;
                    lr = i;
                    cr = j;
                }
                else if (rez == minim) {
                    if (i < lr) {
                        lr = i;
                        cr = j;
                    }
                    else if (i == lr) {
                        lr = i;
                        cr = j;
                    }
                }
            }
        }
    }
//    for (int i = 1; i <= linii; i++) {
//        for (int j = 1; j <= coloane; j++) {
//            fout << R[i][j] << ' ';
//        }
//        fout << '\n';
//    }
//    fout << '\n';
//    for (int i = 1; i <= linii; i++) {
//        for (int j = 1; j <= coloane; j++) {
//            fout << J[i][j] << ' ';
//        }
//        fout << '\n';
//    }
    fout << minim + 1 << ' ' << lr << ' ' << cr;
    return 0;
}