View Compilation Error

0_0_25796989_27179.cpp: In function 'int main()':
0_0_25796989_27179.cpp:46:24: error: 'c' was not declared in this scope
         ll n = 0,mx,mn;c
                        ^
0_0_25796989_27179.cpp:47:24: error: 'i' was not declared in this scope
         for(int i = 0; i < len; i++)
                        ^