View Compilation Error

0_0_38361377_20926.cpp:1:9: error: #include expects "FILENAME" or <FILENAME>
 #include
         ^
0_0_38361377_20926.cpp: In function 'int main()':
0_0_38361377_20926.cpp:10:25: error: 'scanf' was not declared in this scope
     while(~scanf("%d",&n))
                         ^
0_0_38361377_20926.cpp:15:33: error: 'printf' was not declared in this scope
             printf("%d\n",a[t-m]);
                                 ^