View Compilation Error

0_0_20350814_25426.cpp:14:13: error: size of array 'ans' has non-integral type 'double'
 int ans[maxn];
             ^
0_0_20350814_25426.cpp:15:12: error: size of array 'a' has non-integral type 'double'
 char a[maxn];
            ^
0_0_20350814_25426.cpp:16:12: error: size of array 'b' has non-integral type 'double'
 char b[maxn];
            ^