Cod sursa(job #1295140)

Utilizator alexpetrescuAlexandru Petrescu alexpetrescu Data 18 decembrie 2014 21:01:28
Problema Rj Scor 100
Compilator c Status done
Runda Arhiva de probleme Marime 1.89 kb
#include <stdio.h>
#define MAXN 100
#define NRDIR 8
int dirlin[NRDIR]=
{
    -1, -1, 0, 1, 1, 1, 0, -1
};
int dircol[NRDIR]=
{
    0, 1, 1, 1, 0, -1, -1, -1
};
int qL[MAXN*MAXN], qC[MAXN*MAXN], R[MAXN+2][MAXN+2], J[MAXN+2][MAXN+2];
inline void bfs(int lin, int col, int m[MAXN+2][MAXN+2]){
    int st, dr, l, c, i;
    st=0;
    dr=1;
    qL[0]=lin;
    qC[0]=col;
    m[lin][col]=1;
    while(st<dr){
        lin=qL[st];
        col=qC[st];
        st++;
        for(i=0; i<NRDIR; i++){
            l=lin+dirlin[i];
            c=col+dircol[i];
            if(m[l][c]==0){
                m[l][c]=m[lin][col]+1;
                qL[dr]=l;
                qC[dr]=c;
                dr++;
            }
        }
    }
}
int main(){
    int nrlin, nrcol, min, lin, col, i, j, a, b, c, d;
    char ch;
    FILE *fin, *fout;
    fin=fopen("rj.in", "r");
    fout=fopen("rj.out", "w");
    fscanf(fin, "%d%d ", &nrlin, &nrcol);
    for(i=1; i<=nrlin; i++){
        for(j=1; j<=nrcol; j++){
            ch=fgetc(fin);
            if(ch=='X'){
                R[i][j]=J[i][j]=-1;
            }else if(ch=='R'){
                a=i;
                b=j;
            }else if(ch=='J'){
                c=i;
                d=j;
            }
        }
        fgetc(fin);
    }
    for(i=0; i<=nrlin+1; i++){
        R[i][0]=R[i][nrcol+1]=J[i][0]=J[i][nrcol+1]=-1;
    }
    for(i=0; i<=nrcol+1; i++){
        R[0][i]=R[nrlin+1][i]=J[0][i]=J[nrlin+1][i]=-1;
    }
    bfs(a, b, R);
    bfs(c, d, J);
    min=MAXN*MAXN;
    for(i=1; i<=nrlin; i++){
        for(j=1; j<=nrcol; j++){
            if((R[i][j]>0)&&(J[i][j]>0)&&(R[i][j]==J[i][j])&&(min>R[i][j])){
                min=R[i][j];
                lin=i;
                col=j;
            }
        }
    }
    fprintf(fout, "%d %d %d\n", min, lin, col);
    fclose(fin);
    fclose(fout);
    return 0;
}