Compilare: user.cpp: In function ‘int Ans()’: user.cpp:14:13: warning: variable ‘add’ set but not used [-Wunused-but-set-variable] int add = 0; ^ user.cpp: In function ‘void Solve()’: user.cpp:29:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < V.size(); j++) ^ user.cpp:53:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = j; k < V2.size(); k += K) ^ user.cpp:58:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = j; k < V2.size(); k += K) ^ user.cpp:48:13: warning: unused variable ‘am’ [-Wunused-variable] int am = V2.size() / K; ^ user.cpp:49:13: warning: unused variable ‘nb’ [-Wunused-variable] int nb = V2.size() % K; ^