Compilare: main.cpp: In function 'int main()': main.cpp:91:44: warning: 'pos_y' may be used uninitialized in this function [-Wmaybe-uninitialized] out << min << " " << pos_x << " " << pos_y; ^ main.cpp:91:32: warning: 'pos_x' may be used uninitialized in this function [-Wmaybe-uninitialized] out << min << " " << pos_x << " " << pos_y; ^~~ main.cpp:80:16: warning: 'jy' may be used uninitialized in this function [-Wmaybe-uninitialized] BFS(1, jx, jy); ^ main.cpp:80:16: warning: 'jx' may be used uninitialized in this function [-Wmaybe-uninitialized] main.cpp:79:16: warning: 'ry' may be used uninitialized in this function [-Wmaybe-uninitialized] BFS(0, rx, ry); ^ main.cpp:79:16: warning: 'rx' may be used uninitialized in this function [-Wmaybe-uninitialized]