delete pics to save space

history_source/信息学奥赛一本通/1.1.5.cpp

@@ -0,0 +1,10 @@
+#include<iostream>
+using namespace std;
+int main()
+{
+	int x,a,y,b;
+	cin>>x>>a>>y>>b;
+	int d=(b*y-x*a)/(b-a);
+	cout<<d<<endl;
+	return 0;
+}