Compilare: main.cpp: In function 'int main()': main.cpp:122:84: warning: suggest parentheses around assignment used as truth value [-Wparentheses] comp[i] = low[i] = id[i] = lst_id = lst = repr[i] = st[i] = in_st[i] = len = 0; ~~~~^~~ main.cpp:89:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&n,&m); ^ main.cpp:94:38: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d",&u,&v,&w); ^