Compilare: user.cpp:10:25: warning: integer overflow in expression [-Woverflow] const int inf = (1<<31)-1; ^ user.cpp: In function ‘int main()’: user.cpp:25:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 1 ; i <= n ; ++ i ) ^ user.cpp:28:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0 ; j <= b ; ++ j) ^ user.cpp:31:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 1 ; i <= m ; ++ i ) ^ user.cpp:49:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( value + newcost <= b ) ^ user.cpp:59:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(newnode == t) ^