Compilare: main.cpp: In function 'int main()': main.cpp:36:9: warning: variable 'res2' set but not used [-Wunused-but-set-variable] int res2; ^~~~ main.cpp:58:31: warning: 'mn.Ob::pos' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << mn.pos << " "; ^~~ main.cpp:62:25: warning: 'ind' may be used uninitialized in this function [-Wmaybe-uninitialized] cr[ind].pos = i+1; ~~~~~~~~~~~~^~~~~