View Compilation Error

0_0_9219325_28442.cpp: In function `void insert(int, int, int)':
0_0_9219325_28442.cpp:39: error: `tm' undeclared (first use this function)
0_0_9219325_28442.cpp:39: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_9219325_28442.cpp: In function `int find(int, int, int, int)':
0_0_9219325_28442.cpp:53: error: `tm' undeclared (first use this function)
0_0_9219325_28442.cpp: In function `int main()':
0_0_9219325_28442.cpp:135: error: `tm' undeclared (first use this function)