Compilare: main.c: In function 'main': main.c:12:19: warning: format '%lld' expects argument of type 'long long int *', but argument 3 has type 'int *' [-Wformat=] fscanf(fin, "%lld%lld", &a,&b); ^ main.c:12:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%lld%lld", &a,&b); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:23:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n,&m); ^~~~~~~~~~~~~~~~~~~~~~~~~~