View Compilation Error

0_0_6814590_25068.cpp: In function `int main()':
0_0_6814590_25068.cpp:32: error: `it' undeclared (first use this function)
0_0_6814590_25068.cpp:32: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6814590_25068.cpp:32: error: `hash0' undeclared (first use this function)