Compilare: user.cpp: In function ‘void solve2(int*, int&, int*)’: user.cpp:20:20: warning: unused variable ‘j’ [-Wunused-variable] int mij, s, i, j; ^ user.cpp: In function ‘void solve()’: user.cpp:56:52: warning: unused variable ‘s’ [-Wunused-variable] int i, cminA, cminB, minim, j, num = 0, cminX, s; ^ user.cpp: In function ‘void read()’: user.cpp:14:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:16:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x [i]); ^ user.cpp: In function ‘int main()’: user.cpp:100:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("palind2.in", "r", stdin); ^ user.cpp:101:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("palind2.out", "w", stdout); ^ user.cpp:103:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &T); ^