View Compilation Error

0_0_21440149_27807.cpp: In function 'void solve()':
0_0_21440149_27807.cpp:42:15: error: 'c' was not declared in this scope
   for(int i = c; cntl < k; i = l[i])
               ^
0_0_21440149_27807.cpp:49:15: error: 'c' was not declared in this scope
   for(int i = c; cntr < k; i = r[i])
               ^
0_0_21440149_27807.cpp:59:7: error: 'c' was not declared in this scope
   r[l[c]] = r[c];
       ^