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View Compilation Error

0_0_23450332_32097.cpp: In function 'int main()':
0_0_23450332_32097.cpp:84:30: error: expected ')' before 'edge'
                 merge(edge[i]edge[i].to);    //合并 
                              ^
0_0_23450332_32097.cpp:84:40: error: no matching function for call to 'merge(Edge&)'
                 merge(edge[i]edge[i].to);    //合并 
                                        ^
0_0_23450332_32097.cpp:84:40: note: candidates are:
0_0_23450332_32097.cpp:31:6: note: void merge(int, int)
 void merge(int x,int y)            //合并 
      ^
0_0_23450332_32097.cpp:31:6: note:   candidate expects 2 arguments, 1 provided
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62:0,
                 from 0_0_23450332_32097.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:4814:5: note: template<class _IIter1, class _IIter2, class _OIter, class _Compare> _OIter std::merge(_IIter1, _IIter1, _IIter2, _IIter2, _OIter, _Compare)
     merge(_InputIterator1 __first1, _InputIterator1 __last1,
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:4814:5: note:   template argument deduction/substitution failed:
0_0_23450332_32097.cpp:84:40: note:   candidate expects 6 arguments, 1 provided
                 merge(edge[i]edge[i].to);    //合并 
                                        ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62:0,
                 from 0_0_23450332_32097.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:4766:5: note: template<class _IIter1, class _IIter2, class _OIter> _OIter std::merge(_IIter1, _IIter1, _IIter2, _IIter2, _OIter)
     merge(_InputIterator1 __first1, _InputIterator1 __last1,
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:4766:5: note:   template argument deduction/substitution failed:
0_0_23450332_32097.cpp:84:40: note:   candidate expects 5 arguments, 1 provided
                 merge(edge[i]edge[i].to);    //合并 
                                        ^


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