foo.cc:94:55: error: stray '\357' in program
  for(int i=1;i<=n;i++) a[i] = (s[i-1] == '(' ? 1 : -1)；
                                                       ^
foo.cc:94:56: error: stray '\274' in program
  for(int i=1;i<=n;i++) a[i] = (s[i-1] == '(' ? 1 : -1)；
                                                        ^
foo.cc:94:57: error: stray '\233' in program
  for(int i=1;i<=n;i++) a[i] = (s[i-1] == '(' ? 1 : -1)；
                                                         ^
foo.cc: In function 'int main()':
foo.cc:95:2: error: expected ';' before 'T'
  T.build(a, n, 1, 1, n);
  ^

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