Compilare: main.c: In function 'main': main.c:37:10: warning: implicit declaration of function 'abs' [-Wimplicit-function-declaration] if(t>abs(a[i]-b[j])) ^~~ main.c:7:2: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("stalpi3.in","r",stdin),freopen("stalpi3.out","w",stdout),scanf("%d%d",&n,&d); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:7:34: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("stalpi3.in","r",stdin),freopen("stalpi3.out","w",stdout),scanf("%d%d",&n,&d); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:7:68: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] freopen("stalpi3.in","r",stdin),freopen("stalpi3.out","w",stdout),scanf("%d%d",&n,&d); ^~~~~~~~~~~~~~~~~~~ main.c:9:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&e,&f),C[e]=i*100+f-1; ^~~~~~~~~~~~~~~~~~~ main.c:16:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&e,&f),D[e]=i*100+f-1; ^~~~~~~~~~~~~~~~~~~