View Compilation Error

0_0_16346028_11938.cpp: In function 'int solve()':
0_0_16346028_11938.cpp:52:8: error: redeclaration of 'int i'
    int i ;
        ^
0_0_16346028_11938.cpp:30:6: note: 'int i' previously declared here
  int i ; 
      ^
0_0_16346028_11938.cpp:53:8: error: redeclaration of 'int ans'
    int ans = 1 ; 
        ^
0_0_16346028_11938.cpp:33:6: note: 'int ans' previously declared here
  int ans = 1 ; 
      ^