View Compilation Error

0_0_22345317_9135.cpp: In function 'int main()':
0_0_22345317_9135.cpp:11:2: error: 'int64' was not declared in this scope
  int64 a[50];
  ^
0_0_22345317_9135.cpp:12:2: error: 'a' was not declared in this scope
  a[1]=1; a[2]=2;
  ^