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1_734_4810_21805.cpp:7:33: error: 'long long int pow [107][107]' redeclared as different kind of symbol
 long long pre[107], pow[107][107];
                                 ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/cmath:44:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
                 from 1_734_4810_21805.cpp:4:
GCC4.9.2/x86_64-w64-mingw32/include/math.h:151:18: note: previous declaration 'double pow(double, double)'
   double __cdecl pow(double _X,double _Y);
                  ^
1_734_4810_21805.cpp: In function 'void init()':
1_734_4810_21805.cpp:13:10: error: 'poww' was not declared in this scope
          poww[i][0] = 1;
          ^
1_734_4810_21805.cpp: In function 'void dfs(int, long long int, long long int)':
1_734_4810_21805.cpp:29:32: error: 'poww' was not declared in this scope
         long long yy = y + i * poww[10][pos-1];
                                ^


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