Compilare: user.cpp: In function ‘int dynamic(int)’: user.cpp:87:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < DP.size(); ++i) ^ user.cpp: In function ‘void spreadOccupy(int)’: user.cpp:108:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < affected[k].size(); ++i) ^ user.cpp: In function ‘void unspreadOccupy(int)’: user.cpp:114:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < affected[k].size(); ++i) ^ user.cpp: In function ‘int main()’: user.cpp:120:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("metrou2.in","r",stdin); ^ user.cpp:121:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("metrou2.out","w",stdout); ^