View Compilation Error

0_0_32490547_21640.cpp:8:14: error: '__int' was not declared in this scope
 __int128 cal(__int 128 n) {
              ^
0_0_32490547_21640.cpp:8:27: error: expected ',' or ';' before '{' token
 __int128 cal(__int 128 n) {
                           ^
0_0_32490547_21640.cpp: In function 'int main()':
0_0_32490547_21640.cpp:21:23: error: 'cal' cannot be used as a function
         ll ans = cal(n) % mod;
                       ^