Compilare: user.c: In function ‘main’: user.c:17:5: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("deque.in", "r", stdin); ^ user.c:18:5: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("deque.out", "w", stdout); ^ user.c:20:5: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &k); ^ user.c:25:9: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^ user.c:27:32: warning: array subscript is above array bounds [-Warray-bounds] while (t - 1 >= h && dq[t-1].x >= x) { ^ user.c:31:11: warning: array subscript is above array bounds [-Warray-bounds] dq[t].x = x; ^ user.c:32:11: warning: array subscript is above array bounds [-Warray-bounds] dq[t].i = i; ^ user.c:35:24: warning: array subscript is above array bounds [-Warray-bounds] if (i - k >= dq[h].i) { ^ user.c:40:20: warning: array subscript is above array bounds [-Warray-bounds] r += dq[h].x; ^