Compilare: user.cpp: In function ‘int main()’: user.cpp:54:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 2; i < v.size(); i++) { ^ user.cpp:67:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (S.size() > limi) { ^ user.cpp:33:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("babacu.in","r",stdin); ^ user.cpp:34:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("babacu.out","w",stdout); ^ user.cpp:36:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:38:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf%lf", &a, &b, &c); ^