Compilare: user.cpp: In function ‘int main()’: user.cpp:102:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < div[x].size(); i++) { ^ user.cpp:98:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("minlcm.out", "w", stdout); ^ user.cpp:99:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (fscanf(f, "%d", &T); T; T--) { ^ user.cpp:100:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (fscanf(f, "%d", &N); N; N--) { ^ user.cpp:101:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &x); ^