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View Compilation Error

0_0_8860748_17975.cpp:7:15: pair: No such file or directory
0_0_8860748_17975.cpp:11: error: `MAXN' was not declared in this scope
0_0_8860748_17975.cpp:14: error: `MAXN' was not declared in this scope
0_0_8860748_17975.cpp:14: error: `MAXN' was not declared in this scope
0_0_8860748_17975.cpp:14: error: `MAXN' was not declared in this scope
0_0_8860748_17975.cpp:14: error: `MAXN' was not declared in this scope
0_0_8860748_17975.cpp: In function `void dfs(int)':
0_0_8860748_17975.cpp:18: error: `query' undeclared (first use this function)
0_0_8860748_17975.cpp:18: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_8860748_17975.cpp:19: error: `ans' undeclared (first use this function)
0_0_8860748_17975.cpp:20: error: `op' undeclared (first use this function)
0_0_8860748_17975.cpp: In function `int main()':
0_0_8860748_17975.cpp:26: error: `T' undeclared (first use this function)
0_0_8860748_17975.cpp:28: error: `n' undeclared (first use this function)
0_0_8860748_17975.cpp:30: error: `w' undeclared (first use this function)
0_0_8860748_17975.cpp:31: error: `query' undeclared (first use this function)
0_0_8860748_17975.cpp:33: error: `L' undeclared (first use this function)
0_0_8860748_17975.cpp:34: error: `R' undeclared (first use this function)
0_0_8860748_17975.cpp:35: error: `fa' undeclared (first use this function)
0_0_8860748_17975.cpp:36: error: `m' undeclared (first use this function)
0_0_8860748_17975.cpp:38: error: `x' undeclared (first use this function)
0_0_8860748_17975.cpp:38: error: `y' undeclared (first use this function)
0_0_8860748_17975.cpp:38: error: `z' undeclared (first use this function)
0_0_8860748_17975.cpp:43: error: `root' undeclared (first use this function)
0_0_8860748_17975.cpp:44: error: `Q' undeclared (first use this function)
0_0_8860748_17975.cpp:46: error: `v' undeclared (first use this function)
0_0_8860748_17975.cpp:47: error: `op' undeclared (first use this function)


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