Compilare: user.cpp: In function ‘int main()’: user.cpp:116:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0; j<R[i].size(); j++) { ^ user.cpp:84:9: warning: unused variable ‘p’ [-Wunused-variable] int p = 0; ^ user.cpp:71:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ user.cpp:74:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &v[i]); ^ user.cpp:78:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &m); ^ user.cpp:81:30: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(s, 1, 2000000, fin); ^