Compilare: main.c: In function 'rmq_query': main.c:36:26: warning: unused variable 'res' [-Wunused-variable] int dist = dr - st + 1, res = 999999999; ^~~ main.c: In function 'main': main.c:44:2: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("rmq.in", "r", stdin); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:45:2: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("rmq.out", "w", stdout); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:49:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^~~~~~~~~~~~~~~~~~~~~ main.c:50:26: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] for(int i=1; i<=n; i++) scanf("%d", &mintable[0][i]); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:59:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &st, &dr); ^~~~~~~~~~~~~~~~~~~~~~~