Compilare: user.cpp: In function ‘int main()’: user.cpp:29:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (ull i = 0; i < N; ++i) { ^ user.cpp:22:13: warning: unused variable ‘toate’ [-Wunused-variable] ull toate = 0; ^ user.cpp:27:13: warning: unused variable ‘cop_M’ [-Wunused-variable] ull cop_M = M; ^ user.cpp:20:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(iff,"%d", &T); ^ user.cpp:23:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(iff, "%d %d %d", &N, &M, &X); ^ user.cpp:30:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(iff, "%d", &elm); ^