Compilare: user.cpp: In function ‘void findSolution(int, int)’: user.cpp:19:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (index == sequenceLength) { ~~~~~~^~~~~~~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:52:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < n; ++i) { ~~^~~ user.cpp:44:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("biti.in", "r", stdin); ^ user.cpp:45:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("biti.out", "w", stdout); ^ user.cpp:47:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^