View Compilation Error

0_0_15154857_27795.cpp: In function 'int main()':
0_0_15154857_27795.cpp:41:6: error: redeclaration of 'll ans'
   ll ans = 1;
      ^
0_0_15154857_27795.cpp:34:6: note: 'll ans' previously declared here
   ll ans = 0;
      ^