delete pics to save space

2.10976.cpp

@@ -0,0 +1,23 @@
+#include<cstdio>
+int k;
+int res[20005];
+void solve()
+{
+	int cnt=0;
+	for(int y=k+1;y<=2*k;y++)
+	{
+		int x=k*y/(y-k);
+		if(x*y==k*y+k*x) res[cnt++]=y;
+	}
+	printf("%d\n",cnt);
+	for(int i=0;i<cnt;i++)
+		printf("1/%d = 1/%d + 1/%d\n",k,k*res[i]/(res[i]-k),res[i]);
+}
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	while(scanf("%d",&k)==1) solve();
+	return 0;
+}