View Compilation Error

0_0_28850550_11901.cpp:4:1: error: '_int128' does not name a type
 _int128 a[1000];
 ^
0_0_28850550_11901.cpp: In function 'int main()':
0_0_28850550_11901.cpp:8:5: error: 'a' was not declared in this scope
     a[0]=1;
     ^