View Compilation Error

0_0_20731272_15194.cpp: In function 'int main()':
0_0_20731272_15194.cpp:5:5: error: '__int64_t' was not declared in this scope
     __int64_t a[55];
     ^
0_0_20731272_15194.cpp:6:5: error: 'a' was not declared in this scope
     a[0]=0;
     ^
0_0_20731272_15194.cpp:14:26: error: 's' was not declared in this scope
         printf("%I64d\n",s[n]);
                          ^