View Compilation Error

0_0_34476590_8306.cpp:4:24: error: expected initializer before numeric constant
 const unsigned int mod 3221225473UL;
                        ^
0_0_34476590_8306.cpp: In function 'int fastpow(int, int)':
0_0_34476590_8306.cpp:32:25: error: 'mod' was not declared in this scope
    ans = (ans * base) % mod;
                         ^
0_0_34476590_8306.cpp:33:26: error: 'mod' was not declared in this scope
   base = (base * base) % mod;
                          ^
0_0_34476590_8306.cpp: In function 'int main()':
0_0_34476590_8306.cpp:84:12: error: 'mod' was not declared in this scope
     ans %= mod; 
            ^