Compilare: user.cpp:116:2: warning: no newline at end of file user.cpp: In function 'int swap(int, int, int*)': user.cpp:78: warning: no return statement in function returning non-void user.cpp: In function 'void solve2()': user.cpp:83: warning: unused variable 'j' user.cpp:87: warning: unused variable 's' user.cpp: In function 'int swap(int, int, int*)': user.cpp:78: warning: control reaches end of non-void function