/in/foo.cc:7:7: error: '__int64' does not name a type
 const __int64 mod = (1LL << 31) - 1;
       ^~~~~~~
/in/foo.cc:43:17: error: '__int64' does not name a type
 int list[1010]; __int64 ans = 1;
                 ^~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:69:9: error: 'ans' was not declared in this scope
         ans = (ans * tt) % mod;
         ^~~
/in/foo.cc:69:28: error: 'mod' was not declared in this scope
         ans = (ans * tt) % mod;
                            ^~~
/in/foo.cc:71:23: error: 'ans' was not declared in this scope
     printf("%I64d\n", ans);
                       ^~~