View Compilation Error

0_0_30836557_21187.cpp: In function 'int main()':
0_0_30836557_21187.cpp:57:5: error: '_int128' was not declared in this scope
     _int128 m;
     ^
0_0_30836557_21187.cpp:60:15: error: 'm' was not declared in this scope
         cin >>m;
               ^