/in/foo.cc: In function 'void solve()':
/in/foo.cc:153:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int j = 0;j<s.size();j++)
                  ~^~~~~~~~~
/in/foo.cc:206:10: warning: array subscript is above array bounds [-Warray-bounds]
    re[103] = 1;
    ~~~~~~^