View Compilation Error

0_0_4722956_2786.cpp: In function `bool spfa()':
0_0_4722956_2786.cpp:44: error: `memset' undeclared (first use this function)
0_0_4722956_2786.cpp:44: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_4722956_2786.cpp: In function `void expand()':
0_0_4722956_2786.cpp:73: error: `min' undeclared (first use this function)
0_0_4722956_2786.cpp: In function `int main()':
0_0_4722956_2786.cpp:92: error: `memset' undeclared (first use this function)