Compilare: user.cpp: In function ‘void dijkstra(long int)’: user.cpp:41:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<list[nodeS].size();i++){ ^ user.cpp:53:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<list[node].size();i++){ ^ user.cpp: In function ‘long int getSolution()’: user.cpp:68:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<Edges.size();i++){ ^ user.cpp: In function ‘int main()’: user.cpp:86:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dbz.in","r",stdin); ^ user.cpp:87:34: 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:89:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld %ld",&n,&m); ^ user.cpp:91:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld %ld %ld",&x,&y,&z); ^