'commit'

TangDou/AoSaiYiBenTong/YBT1005.cpp

@@ -0,0 +1,11 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int main() {
+    int x, a, y, b;
+    cin >> x >> a >> y >> b;
+    float z = 1.0 * (y * b - x * a) / (b - a);
+    printf("%.2f",z);
+    return 0;
+}