0_0_19059887_4503.cpp: In function 'bool SPFA()':
0_0_19059887_4503.cpp:72:5: error: reference to 'prev' is ambiguous
prev[S]=-1;
^
0_0_19059887_4503.cpp:18:27: note: candidates are: int prev [500]
int demond[MAXN],sp[MAXN],prev[MAXN]; //spSPFA中记录距离，prev记录上一个点路径
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:66:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:60,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
from 0_0_19059887_4503.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator_base_funcs.h:193:5: note: template<class _BidirectionalIterator> _BidirectionalIterator std::prev(_BidirectionalIterator, typename std::iterator_traits<_Iter>::difference_type)
prev(_BidirectionalIterator __x, typename
^
0_0_19059887_4503.cpp:84:17: error: reference to 'prev' is ambiguous
prev[v]=u;
^
0_0_19059887_4503.cpp:18:27: note: candidates are: int prev [500]
int demond[MAXN],sp[MAXN],prev[MAXN]; //spSPFA中记录距离，prev记录上一个点路径
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:66:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:60,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
from 0_0_19059887_4503.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator_base_funcs.h:193:5: note: template<class _BidirectionalIterator> _BidirectionalIterator std::prev(_BidirectionalIterator, typename std::iterator_traits<_Iter>::difference_type)
prev(_BidirectionalIterator __x, typename
^
0_0_19059887_4503.cpp: In function 'int argument()':
0_0_19059887_4503.cpp:98:13: error: reference to 'prev' is ambiguous
for(i=T;prev[i]!=-1;i=prev[i]){
^
0_0_19059887_4503.cpp:18:27: note: candidates are: int prev [500]
int demond[MAXN],sp[MAXN],prev[MAXN]; //spSPFA中记录距离，prev记录上一个点路径
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:66:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:60,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
from 0_0_19059887_4503.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator_base_funcs.h:193:5: note: template<class _BidirectionalIterator> _BidirectionalIterator std::prev(_BidirectionalIterator, typename std::iterator_traits<_Iter>::difference_type)
prev(_BidirectionalIterator __x, typename
^
0_0_19059887_4503.cpp:98:27: error: reference to 'prev' is ambiguous
for(i=T;prev[i]!=-1;i=prev[i]){
^
0_0_19059887_4503.cpp:18:27: note: candidates are: int prev [500]
int demond[MAXN],sp[MAXN],prev[MAXN]; //spSPFA中记录距离，prev记录上一个点路径
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:66:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:60,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
from 0_0_19059887_4503.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator_base_funcs.h:193:5: note: template<class _BidirectionalIterator> _BidirectionalIterator std::prev(_BidirectionalIterator, typename std::iterator_traits<_Iter>::difference_type)
prev(_BidirectionalIterator __x, typename
^
0_0_19059887_4503.cpp:102:17: error: reference to 'prev' is ambiguous
for(int i=T;prev[i]!=-1;i=prev[i]){
^
0_0_19059887_4503.cpp:18:27: note: candidates are: int prev [500]
int demond[MAXN],sp[MAXN],prev[MAXN]; //spSPFA中记录距离，prev记录上一个点路径
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:66:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:60,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
from 0_0_19059887_4503.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator_base_funcs.h:193:5: note: template<class _BidirectionalIterator> _BidirectionalIterator std::prev(_BidirectionalIterator, typename std::iterator_traits<_Iter>::difference_type)
prev(_BidirectionalIterator __x, typename
^
0_0_19059887_4503.cpp:102:31: error: reference to 'prev' is ambiguous
for(int i=T;prev[i]!=-1;i=prev[i]){
^
0_0_19059887_4503.cpp:18:27: note: candidates are: int prev [500]
int demond[MAXN],sp[MAXN],prev[MAXN]; //spSPFA中记录距离，prev记录上一个点路径
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:66:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:60,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
from 0_0_19059887_4503.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator_base_funcs.h:193:5: note: template<class _BidirectionalIterator> _BidirectionalIterator std::prev(_BidirectionalIterator, typename std::iterator_traits<_Iter>::difference_type)
prev(_BidirectionalIterator __x, typename
^
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