View Compilation Error

0_0_21042130_1126.cpp: In function 'int maxFlow(int, int)':
0_0_21042130_1126.cpp:22:32: error: 'memset' was not declared in this scope
  memset(vis, false, sizeof(vis));
                                ^
0_0_21042130_1126.cpp: In function 'int main()':
0_0_21042130_1126.cpp:60:35: error: 'memset' was not declared in this scope
   memset(maxCap, 0, sizeof(maxCap));
                                   ^