View Compilation Error

0_0_31671454_22433.cpp: In function 'long long int rd()':
0_0_31671454_22433.cpp:34:8: error: redeclaration of 'long long int x'
     ll x=0,f=1;char ch=getchar();
        ^
0_0_31671454_22433.cpp:31:5: note: 'long long int x' previously declared here
  ll x;
     ^