View Compilation Error

0_0_9219096_20675.cpp: In function `void insert(int, int, int)':
0_0_9219096_20675.cpp:35: error: `tm' undeclared (first use this function)
0_0_9219096_20675.cpp:35: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_9219096_20675.cpp: In function `int find(int, int, int, int)':
0_0_9219096_20675.cpp:49: error: `tm' undeclared (first use this function)
0_0_9219096_20675.cpp: In function `int main()':
0_0_9219096_20675.cpp:131: error: `tm' undeclared (first use this function)