Compilare: user.cpp:9:22: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] # define MAX_VAL ( 1 << 21 + 1 ) ^ user.cpp:13:8: note: in expansion of macro ‘MAX_VAL’ int ls[MAX_VAL]; ^ user.cpp: In function ‘int main()’: user.cpp:9:22: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] # define MAX_VAL ( 1 << 21 + 1 ) ^ user.cpp:49:22: note: in expansion of macro ‘MAX_VAL’ for ( i = 1; i < MAX_VAL; i ++ ) ^ user.cpp:42:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d", &n, &k ); ^ user.cpp:45:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &v[i] ); ^