Compilare: user.cpp: In function ‘int main()’: user.cpp:4:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] #define INF 0xCFFFFFFF ^ user.cpp:40:33: note: in expansion of macro ‘INF’ if(dist[it->first]==INF||dist[it->first]>it->second) ^ user.cpp:4:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] #define INF 0xCFFFFFFF ^ user.cpp:56:37: note: in expansion of macro ‘INF’ if(dist[it->first]==INF||dist[it->first]>dist[a]+it->second) ^ user.cpp:4:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] #define INF 0xCFFFFFFF ^ user.cpp:69:33: note: in expansion of macro ‘INF’ if(dist[i]==0||dist[i]==INF) out<<"0 "; ^