Compilare: main.c: In function 'A': main.c:6:35: warning: operation on 'h[t]' may be undefined [-Wsequence-point] for(;t>1&&v[h[t]]<v[h[t>>1]];h[t]^=h[t>>1]^=h[t]^=h[t>>1],p[h[t]]=t,p[h[t>>1]]=t>>1,t>>=1); ^~ main.c: In function 'main': main.c:10:2: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("heapuri.in","r",stdin),freopen("heapuri.out","w",stdout),scanf("%d",&n); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:10:34: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("heapuri.in","r",stdin),freopen("heapuri.out","w",stdout),scanf("%d",&n); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:10:68: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] freopen("heapuri.in","r",stdin),freopen("heapuri.out","w",stdout),scanf("%d",&n); ^~~~~~~~~~~~~~ main.c:12:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&z); ^~~~~~~~~~~~~~ main.c:16:6: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&r); ^~~~~~~~~~~~~~