View Compilation Error

0_0_19818675_11127.cpp: In function 'void Init()':
0_0_19818675_11127.cpp:16:29: error: 'memset' was not declared in this scope
  memset(head,-1,sizeof(head));
                             ^
0_0_19818675_11127.cpp: In function 'int spfa()':
0_0_19818675_11127.cpp:36:28: error: 'memset' was not declared in this scope
  memset(dis,inf,sizeof(dis));
                            ^
0_0_19818675_11127.cpp: In function 'int main()':
0_0_19818675_11127.cpp:75:10: error: expected '}' at end of input
  return 0;
          ^