System Error
/in/foo.cc: In function 'int main()':
/in/foo.cc:38:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
mid=leftl+rightl>>1;
~~~~~^~~~~~~
VJ4Error('ProblemDataNotFoundError', '题目 590c9c29d3d8a13210993b2c 的数据未找到。', 'newbzoj', '590c9c29d3d8a13210993b2c')
