View Compilation Error

0_0_8685059_19785.cpp:8: error: expected constructor, destructor, or type conversion before '<' token
0_0_8685059_19785.cpp:8: error: expected `,' or `;' before '<' token
0_0_8685059_19785.cpp: In function `void dfs(int, int, int)':
0_0_8685059_19785.cpp:13: error: `arr' undeclared (first use this function)
0_0_8685059_19785.cpp:13: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_8685059_19785.cpp: In function `int main()':
0_0_8685059_19785.cpp:31: error: `arr' undeclared (first use this function)