View Compilation Error

0_0_18798434_30756.cpp: In function 'int main(int, char**)':
0_0_18798434_30756.cpp:34:17: error: 'end1' was not declared in this scope
    cout<<"YES"<<end1;
                 ^
0_0_18798434_30756.cpp:36:16: error: 'end1' was not declared in this scope
    cout<<"NO"<<end1;
                ^