View Compilation Error

0_0_15487070_7308.cpp: In function 'void solve()':
0_0_15487070_7308.cpp:54:34: error: 'N' was not declared in this scope
     double rights = min( L[1], L[N] );
                                  ^
0_0_15487070_7308.cpp:55:12: error: redeclaration of 'double t1'
     double t1 = 0;
            ^
0_0_15487070_7308.cpp:52:8: note: 'LL t1' previously declared here
     LL t1 = min(L[1], L[n]);
        ^
0_0_15487070_7308.cpp:66:5: error: 'lhs' was not declared in this scope
     lhs = lefts;
     ^
0_0_15487070_7308.cpp:67:5: error: 'rhs' was not declared in this scope
     rhs = rights;
     ^