delete pics to save space

history_source/信息学奥赛一本通/2.4.14.cpp

@@ -0,0 +1,20 @@
+#include<iostream>
+using namespace std;
+int main()
+{
+	char li;
+	bool isc[100010]={0};
+	int k,x;
+	cin>>k>>li>>x;
+	isc[k]=1;
+	for(int i=0;i*2+1<100010;i++)
+		if(isc[i])
+		{
+			isc[i*2+1]=1;
+			if(i*3+1<100010) isc[i*3+1]=1;
+		}
+	if(isc[x]) cout<<"YES"<<endl;
+	else cout<<"NO"<<endl;
+	return 0;
+}
+