View Compilation Error

0_0_28320999_39.cpp: In function 'int main()':
0_0_28320999_39.cpp:93:7: error: redeclaration of 'int l'
   int l = 0, r = m - 1;
       ^
0_0_28320999_39.cpp:92:7: note: 'int l' previously declared here
   int l = 0, r = m;
       ^
0_0_28320999_39.cpp:93:14: error: redeclaration of 'int r'
   int l = 0, r = m - 1;
              ^
0_0_28320999_39.cpp:92:14: note: 'int r' previously declared here
   int l = 0, r = m;
              ^