Compilare: main.cpp: In function 'int main()': main.cpp:66:46: warning: format '%d' expects argument of type 'int', but argument 3 has type 'long long int' [-Wformat=] fprintf(fout,"%d %lld\n", nr[i], c[i]); ^ main.cpp:35:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%lld", &n); ^ main.cpp:37:35: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%lld", &v[i]); ^