View Compilation Error

0_0_39477239_26268.cpp: In function 'int main()':
0_0_39477239_26268.cpp:17:9: error: 'memset' was not declared in this scope
   17 |         memset(mmax,0,sizeof(mmax));
      |         ^~~~~~
0_0_39477239_26268.cpp:4:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    3 | #include<algorithm>
  +++ |+#include <cstring>
    4 | #define maxn 1000010