View Compilation Error

0_0_13329948_32725.cpp: In function 'int main()':
0_0_13329948_32725.cpp:11:6: error: '_int64' was not declared in this scope
      _int64 most=1;//输入的所有数的积一定是所有数的公倍数
      ^
0_0_13329948_32725.cpp:21:7: error: 'most' was not declared in this scope
       most=most*a[i];
       ^
0_0_13329948_32725.cpp:23:19: error: 'most' was not declared in this scope
      for(i=max;i<=most;i++)
                   ^