Compilare: main.c: In function 'main': main.c:5:5: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("buline.in","r",stdin),freopen("buline.out","w",stdout),scanf("%d",&n),t[0]=-200001; ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:5:36: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("buline.in","r",stdin),freopen("buline.out","w",stdout),scanf("%d",&n),t[0]=-200001; ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:5:69: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] freopen("buline.in","r",stdin),freopen("buline.out","w",stdout),scanf("%d",&n),t[0]=-200001; ^~~~~~~~~~~~~~ main.c:7:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",a+i,&b); ^~~~~~~~~~~~~~~~~~~~