运行 ID: 37959

Main.cc:3:0: warning: ignoring #pragma gcc optimize [-Wunknown-pragmas]
 #pragma gcc optimize(2)
 
Main.cc: In member function ‘db _::ask(db)’:
Main.cc:62:22: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses]
             int mid=l+r>>1;
                     ~^~
Main.cc: At global scope:
Main.cc:94:2: error: expected unqualified-id before ‘{’ token
 }{}
  ^
Main.cc: In function ‘int main()’:
Main.cc:89:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]
     freopen("1.in","r",stdin),freopen("1.out","w",stdout);
     ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cc:89:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]