View Compilation Error

0_0_29834814_32325.cpp: In function 'int main()':
0_0_29834814_32325.cpp:73:13: error: '_int128' was not declared in this scope
         for(_int128 i = 1;i * i * i < n;++i){
             ^
0_0_29834814_32325.cpp:73:27: error: 'i' was not declared in this scope
         for(_int128 i = 1;i * i * i < n;++i){
                           ^