delete pics to save space

history_source/信息学奥赛一本通/1.6.1.1t.cpp

@@ -0,0 +1,22 @@
+#include<cstdio>
+using namespace std;
+bool isw(int n)
+{
+	int sum=1;
+	for(int i=2;i*i<=n;i++)
+	{
+		if(n%i==0)
+		{
+			sum+=i+n/i;
+			if(i*i==n) sum-=i;
+		}
+	}
+	return sum==n;
+}
+int main()
+{
+	for(int i=2;i<=100;i++)
+		if(isw(i)) printf("%d\n",i);
+	return 0;
+}
+