View Compilation Error

0_0_13468923_17822.cpp: In function 'bool spfa(int)':
0_0_13468923_17822.cpp:29:30: error: 'memset' was not declared in this scope
  memset(inque,0,sizeof(inque));
                              ^
0_0_13468923_17822.cpp:44:21: error: 'id' was not declared in this scope
   int u=q.front().u;id=q.front().id;
                     ^
0_0_13468923_17822.cpp: In function 'int main()':
0_0_13468923_17822.cpp:82:30: error: 'memset' was not declared in this scope
   memset(head,-1,sizeof(head));
                              ^
0_0_13468923_17822.cpp:92:17: error: 'love1' was not declared in this scope
    edge[cnt].id=love1;
                 ^