Compilare: user.cpp: In function 'void solve(int, int)': user.cpp:43: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int main()': user.cpp:64: warning: format '%s' expects type 'char*', but argument 2 has type 'char (*)[64]' user.cpp:71: warning: format '%s' expects type 'char*', but argument 2 has type 'char (*)[16]'