View Compilation Error

0_0_35958153_20159.cpp: In function 'int main()':
0_0_35958153_20159.cpp:55:2: error: 'IO' was not declared in this scope
  IO;
  ^
0_0_35958153_20159.cpp:59:9: error: 'slove' was not declared in this scope
   slove();
         ^