Compilare: main.cpp: In function 'int RandomUnsolved(int, int)': main.cpp:26:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ main.cpp: In function 'std::vector<int> find_permutation(int)': main.cpp:80:20: warning: 'pivot' may be used uninitialized in this function [-Wmaybe-uninitialized] perm[1]=pivot;