Compilare: user.c: In function ‘main’: user.c:47:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d\n%s", &N, &K, s + 1); ^ user.c:51:10: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("alibaba.out", "w", stdout); ^ user.c: In function ‘thief’: user.c:40:13: warning: ‘pos’ may be used uninitialized in this function [-Wmaybe-uninitialized] thief(pos + begin + 1, remove - pos); ^