Compilare: main.c: In function 'main': main.c:57:10: warning: variable 'laf' set but not used [-Wunused-but-set-variable] int *laf, *la; ^~~ main.c:53:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^~~~~~~~~~~~~~~~~~~~~ main.c:66:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &a[i].s, &a[i].d); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~