0_0_30291517_6132.cpp:9:13: error: size of array 'vis' is not an integral constant-expression
int vis[maxn];
^
0_0_30291517_6132.cpp:10:11: error: size of array 'x' is not an integral constant-expression
int x[maxn], y[maxn];
^
0_0_30291517_6132.cpp:10:20: error: size of array 'y' is not an integral constant-expression
int x[maxn], y[maxn];
^
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