0_0_30860271_18750.cpp:15:1: error: reference to 'unordered_map' is ambiguous
unordered_map<int,int> ma;
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/tr1/unordered_map:42:0,
from 0_0_30860271_18750.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/tr1/unordered_map.h:180:11: note: candidates are: template<class _Key, class _Tp, class _Hash, class _Pred, class _Alloc> class std::tr1::unordered_map
class unordered_map
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/unordered_map:48:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:115,
from 0_0_30860271_18750.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/unordered_map.h:98:11: note: template<class _Key, class _Tp, class _Hash, class _Pred, class _Alloc> class std::unordered_map
class unordered_map
^
0_0_30860271_18750.cpp:15:1: error: 'unordered_map' does not name a type
unordered_map<int,int> ma;
^
0_0_30860271_18750.cpp: In function 'int main()':
0_0_30860271_18750.cpp:73:8: error: 'ma' was not declared in this scope
if(ma[v]) continue;
^
0_0_30860271_18750.cpp:74:5: error: 'ma' was not declared in this scope
ma[v]=1,ans++;
^
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