View Compilation Error

0_0_1573955_22005.cpp: In function `int main()':
0_0_1573955_22005.cpp:115: error: `lower_bound' undeclared (first use this function)
0_0_1573955_22005.cpp:115: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_1573955_22005.cpp:119: error: `upper_bound' undeclared (first use this function)