View Compilation Error

0_0_17439938_7346.cpp: In function 'int main()':
0_0_17439938_7346.cpp:5:5: error: 'int64' was not declared in this scope
     int64 a[60];
     ^
0_0_17439938_7346.cpp:8:9: error: 'a' was not declared in this scope
         a[1]=3;
         ^