Compilare: user.cpp: In function ‘void Solve()’: user.cpp:53:29: warning: unused variable ‘j’ [-Wunused-variable] int i, ret = 0, p1, p2, j; ^ user.cpp: In function ‘void Read()’: user.cpp:19:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:21:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i]); ^