Compilare: user.cpp: In function ‘void DinamicProgramming()’: user.cpp:27:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=0;k<g[j].size();k++){ ^ user.cpp: In function ‘void Reconstitute(int, int)’: user.cpp:37:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<g[index].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:50:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ppal.in","r",stdin); ^ user.cpp:51:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ppal.out","w",stdout); ^ user.cpp:52:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n%s\n",&n,s+1); ^