View Compilation Error

0_0_21440432_29442.cpp:8:21: error: size of array 'vis' has non-integral type 'double'
 int n, k, cnt, vis[N];
                     ^
0_0_21440432_29442.cpp:9:11: error: size of array 'head' has non-integral type 'double'
 int head[N], rs[N], va[N];
           ^
0_0_21440432_29442.cpp:9:18: error: size of array 'rs' has non-integral type 'double'
 int head[N], rs[N], va[N];
                  ^
0_0_21440432_29442.cpp:9:25: error: size of array 'va' has non-integral type 'double'
 int head[N], rs[N], va[N];
                         ^
0_0_21440432_29442.cpp:13:9: error: size of array 'r' has non-integral type 'double'
 }r[N * 2];
         ^