delete pics to save space

1.3383.cpp

@@ -0,0 +1,28 @@
+#include<cstdio>
+#include<cstring>
+#include<cmath>
+const int maxn=10000000;
+const int maxsize=maxn/log(maxn)*1.2;
+bool isp[maxn+5];
+int p[maxsize],cnt;
+int main()
+{
+	memset(isp,true,sizeof(isp));
+	for(int i=2;i<=maxn;i++)
+	{
+		if(isp[i]) p[cnt++]=i;
+		for(int j=0;j<cnt&&i*p[j]<=maxn;j++)
+		{
+			isp[i*p[j]]=false;
+			if(i%p[j]==0) break;
+		}
+	}
+	int n,m,x;
+	scanf("%d%d",&n,&m);
+	while(m-->0)
+	{
+		scanf("%d",&x);
+		printf("%s\n",(x>1&&isp[x])?"Yes":"No");
+	}
+	return 0;
+}