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0_0_32147302_2883.cpp: In function 'void mine::main()':
0_0_32147302_2883.cpp:109:55: error: too few arguments to function 'void* memset(void*, int, size_t)'
             mem(vis,0);mem(aa,0),mem(bb,0);memset(is,0);DSU::clear();ll ans=0,all=1ll*(n-1)*n;
                                                       ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/cstring:42:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:48,
                 from 0_0_32147302_2883.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/string.h:43:18: note: declared here
   void * __cdecl memset(void *_Dst,int _Val,size_t _Size);
                  ^