View Compilation Error

0_0_15652965_15311.cpp: In function 'int main()':
0_0_15652965_15311.cpp:16:12: error: 'I64d' was not declared in this scope
 #define LL I64d
            ^
0_0_15652965_15311.cpp:31:5: note: in expansion of macro 'LL'
     LL a,b;
     ^
0_0_15652965_15311.cpp:32:32: error: 'a' was not declared in this scope
     while(~scanf("%I64x%I64x",&a,&b))
                                ^
0_0_15652965_15311.cpp:32:35: error: 'b' was not declared in this scope
     while(~scanf("%I64x%I64x",&a,&b))
                                   ^