Compilare: main.cpp: In function 'int main()': main.cpp:75:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<upd.size();j++){ ~^~~~~~~~~~~ main.cpp:51:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^ main.cpp:53:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&v[i]); ^