View Compilation Error

0_0_6710044_23424.cpp:6: error: `_int64' does not name a type
0_0_6710044_23424.cpp:10: error: `ll' does not name a type
0_0_6710044_23424.cpp:18: error: `ll' has not been declared
0_0_6710044_23424.cpp:19: error: ISO C++ forbids declaration of `num' with no type
0_0_6710044_23424.cpp: In function `void dfs(int, int, int, int, int)':
0_0_6710044_23424.cpp:25: error: `dp' undeclared (first use this function)
0_0_6710044_23424.cpp:25: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6710044_23424.cpp: At global scope:
0_0_6710044_23424.cpp:59: error: `ll' does not name a type
0_0_6710044_23424.cpp: In function `int main()':
0_0_6710044_23424.cpp:84: error: `calc' undeclared (first use this function)