'commit'

TangDou/XiTi/1111.cpp

@@ -0,0 +1,13 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int main() {
+    for (int i = 0; i <= 50; ++i) {
+        if (i * 0.80 - (50 - i) * 0.30 == 18) {
+            cout << i << endl;
+            break;
+        }
+    }
+    return 0;
+}