View Compilation Error

0_0_37241365_28421.cpp: In function 'void dijkstra()':
0_0_37241365_28421.cpp:20:9: error: wrong number of template arguments (1, should be 4)
  map<int> mp;
         ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/map:61:0,
                 from 0_0_37241365_28421.cpp:8:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_map.h:96:11: error: provided for 'template<class _Key, class _Tp, class _Compare, class _Alloc> class std::map'
     class map
           ^
0_0_37241365_28421.cpp:20:13: error: invalid type in declaration before ';' token
  map<int> mp;
             ^