View Compilation Error

0_0_36303405_23425.cpp: In function 'int main()':
0_0_36303405_23425.cpp:64:6: error: 'm1' was not declared in this scope
      m1 = (L*2+R)/3;
      ^
0_0_36303405_23425.cpp:65:6: error: 'm2' was not declared in this scope
      m2 = (L+R*2)/3;
      ^