View Compilation Error

0_0_22259142_3284.cpp: In function 'bool dinic_bfs()':
0_0_22259142_3284.cpp:19:35: error: 'memset' was not declared in this scope
     memset(level, 0, sizeof(level));
                                   ^
0_0_22259142_3284.cpp: In function 'int main()':
0_0_22259142_3284.cpp:64:37: error: 'memset' was not declared in this scope
         memset(edge, 0, sizeof(edge));
                                     ^