0_0_38989185_22603.cpp: In function 'void IsPrime()':
0_0_38989185_22603.cpp:8:5: error: 'memset' was not declared in this scope
8 | memset(prime,0,N); //初始化prime数组为0
| ^~~~~~
0_0_38989185_22603.cpp:3:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
2 | #include <cmath>
+++ |+#include <cstring>
3 | const int N = 200001;
|