Compilare: main.cpp: In function 'int main()': main.cpp:69:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (rez.size() != m) // neconex ~~~~~~~~~~~^~~~ main.cpp:19:31: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fi, "%d%d", &n, &m); ^ main.cpp:23:35: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fi, "%d%d", &u, &v); ^