View Compilation Error

0_0_20881840_1053.cpp:1:9: error: #include expects "FILENAME" or <FILENAME>
 #include
         ^
0_0_20881840_1053.cpp: In function 'int main()':
0_0_20881840_1053.cpp:4:5: error: '__int64' was not declared in this scope
     __int64 a[50]; 
     ^
0_0_20881840_1053.cpp:6:5: error: 'a' was not declared in this scope
     a[1]=1; 
     ^
0_0_20881840_1053.cpp:10:25: error: 'scanf' was not declared in this scope
     while(~scanf("%d",&n))
                         ^
0_0_20881840_1053.cpp:15:36: error: 'printf' was not declared in this scope
             printf("%I64d\n",a[t-m]);
                                    ^