View Compilation Error

0_0_35700508_22262.cpp: In function 'int main()':
0_0_35700508_22262.cpp:21:12: error: redeclaration of 'll ans'
         ll ans = calc(n % lcm);
            ^
0_0_35700508_22262.cpp:19:12: note: 'll ans' previously declared here
         ll ans = 0;
            ^