0_0_16540066_677.cpp: In function 'bool spfa()':
0_0_16540066_677.cpp:65:61: error: reference to 'prev' is ambiguous
dis[to] = dis[cur] + e[i].w,prev[to] = cur,pree[to] = i;
^
0_0_16540066_677.cpp:48:15: note: candidates are: int prev [510]
int dis[MAXN],prev[MAXN],pree[MAXN];
^
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++/algorithm:61,
from 0_0_16540066_677.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_16540066_677.cpp:72:53: error: reference to 'prev' is ambiguous
while (cur) F = min(F,e[pree[cur]].c),cur = prev[cur];
^
0_0_16540066_677.cpp:48:15: note: candidates are: int prev [510]
int dis[MAXN],prev[MAXN],pree[MAXN];
^
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++/algorithm:61,
from 0_0_16540066_677.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_16540066_677.cpp:74:71: error: reference to 'prev' is ambiguous
while (cur) e[pree[cur]].c -= F,e[pree[cur] ^ 1].c += F,cur = prev[cur];
^
0_0_16540066_677.cpp:48:15: note: candidates are: int prev [510]
int dis[MAXN],prev[MAXN],pree[MAXN];
^
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++/algorithm:61,
from 0_0_16540066_677.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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