Compilare: user.cpp: In function ‘int dinamica(std::__cxx11::string, std::__cxx11::string)’: user.cpp:23:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i <= s.size(); ++i) { ^ user.cpp:26:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j <= p.size(); ++j) { ^ user.cpp: In function ‘void buildGraph()’: user.cpp:42:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < words.size(); i++) { ^ user.cpp:43:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = i + 1; j < words.size(); j++) { ^ user.cpp: In function ‘void read()’: user.cpp:9:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d ", &k); ^ user.cpp: In function ‘int main()’: user.cpp:63:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("lant.in", "r", stdin); ^ user.cpp:64:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("lant.out", "w", stdout); ^