View Compilation Error

0_0_36468882_26434.cpp: In function 'int main()':
0_0_36468882_26434.cpp:50:6: error: redeclaration of 'int n'
  int n;
      ^
0_0_36468882_26434.cpp:39:6: note: 'int n' previously declared here
  int n = 1;
      ^