View Compilation Error

0_0_26296214_10020.cpp: In function 'int main()':
0_0_26296214_10020.cpp:161:4: error: 'aaa' was not declared in this scope
   {aaa
    ^
0_0_26296214_10020.cpp:163:13: error: 'mid' was not declared in this scope
    if(solve(mid))L = mid;
             ^