Compilare: main.cpp: In function 'int main()': main.cpp:79:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<upd.size();j++){ ~^~~~~~~~~~~ main.cpp:55:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^ main.cpp:57:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&v[i]); ^