Compilare: user.cpp: In function ‘void dijkstra(int)’: user.cpp:54:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<m[x].size();++i) { ^ user.cpp: In function ‘int main()’: user.cpp:89:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<e.size();++j) { ^ user.cpp:75:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dbz.out","w",stdout); ^ user.cpp: In function ‘int getNumber()’: user.cpp:30:17: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] buffIt = 0; ^ user.cpp:35:45: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, BUFFER_SIZE, 1, inputFile); ^