Compilare: user.cpp: In function ‘int comp(int)’: user.cpp:63:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0, j = vet[k].second; i < str.size() && j < A.size(); ++i, ++j){ ^ user.cpp:63:61: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0, j = vet[k].second; i < str.size() && j < A.size(); ++i, ++j){ ^ user.cpp:71:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i < str.size()) ^ user.cpp: In function ‘int main()’: user.cpp:112:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("seti.out", "w", stdout); ^ user.cpp:113:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("seti.in", "r", stdin); ^