Compilare: main.cpp: In function 'void bfs_alg(int, int)': main.cpp:68:42: warning: statement has no effect [-Wunused-value] zero[l+dx[q]][c+dy[q]]; ~~~~~~~~~~~~~~~~~~~~~^ main.cpp: In function 'void solve()': main.cpp:101:22: warning: 'pY' may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<pX<<" "<<pY; ^ main.cpp:101:15: warning: 'pX' may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<pX<<" "<<pY; ^~~