View Compilation Error

0_0_26769047_18079.cpp: In function 'int dp(int, int)':
0_0_26769047_18079.cpp:51:18: error: 's' was not declared in this scope
  int &ans = d[i][s];
                  ^
0_0_26769047_18079.cpp: In function 'int main()':
0_0_26769047_18079.cpp:72:19: error: expected ')' before 'sizeof'
   memset(dist, -1 sizeof(dist));
                   ^
0_0_26769047_18079.cpp:72:31: error: too few arguments to function 'void* memset(void*, int, size_t)'
   memset(dist, -1 sizeof(dist));
                               ^
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_26769047_18079.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);
                  ^