/in/foo.cc: In instantiation of 'void solve::read(T&) [with T = int]':
/in/foo.cc:35:8:   required from here
/in/foo.cc:22:45: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
  for (x = 0; isdigit(c); c = read()) x = (x + (x << 2) << 1) + (c ^ '0');
                                           ~~^~~~~~~~~~

VJ4Error('ProblemDataNotFoundError', '题目 590c987fd3d8a1321099374b 的数据未找到。', 'newbzoj', '590c987fd3d8a1321099374b')