delete pics to save space

history_source/ccf 入门篇/U4/4.4.7.cpp

@@ -0,0 +1,26 @@
+#include<iostream>
+using namespace std;
+int zd(int a,int b)
+{
+	int ans=1;
+	for(int i=2;i<=(a<b?a:b);i++) if(a%i==0&&b%i==0) ans=i;
+	return ans;
+}
+int zx(int a,int b)
+{
+	return a*b/zd(a,b);
+}
+int main()
+{
+	int answer,x,y,p,q;
+	while(true)
+	{
+		answer=0;
+		cin>>x>>y;
+		for(p=x;p<=y;p++)
+		{
+			for(q=x;q<=y;q++) if(zd(p,q)==x&&zx(p,q)==y) answer++;
+		}
+		cout<<answer<<endl;
+	}
+}