View Compilation Error

0_0_38584997_22902.cpp: In function 'int main()':
0_0_38584997_22902.cpp:40:5: error: expected initializer before 'ios'
     ios::sync_with_stdio(0);
     ^~~
0_0_38584997_22902.cpp:42:14: error: '_o' was not declared in this scope
     for(cin>>_o;_o--;){
              ^~