Compilare: user.c:4:1: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] int v[100000], aint[1<<18+1]; ^ user.c: In function ‘main’: user.c:51:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d", &n, &m ); ^ user.c:53:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &v[i] ); ^ user.c:56:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d%d", &q, &a, &b ); ^