Compilare: main.c: In function 'main': main.c:13:2: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("berarii2.in","r",stdin),freopen("berarii2.out","w",stdout),scanf("%d%d%d",&n,&m,&p); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:13:35: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("berarii2.in","r",stdin),freopen("berarii2.out","w",stdout),scanf("%d%d%d",&n,&m,&p); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:13:70: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] freopen("berarii2.in","r",stdin),freopen("berarii2.out","w",stdout),scanf("%d%d%d",&n,&m,&p); ^~~~~~~~~~~~~~~~~~~~~~~~ main.c:15:8: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",a+i,b+i),++w[b[i]]; ^~~~~~~~~~~~~~~~~~~~~ main.c:21:8: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&i),A(i); ^~~~~~~~~~~~~~