init commit

contests/7contest/5.cpp

@@ -0,0 +1,36 @@
+class Figure {
+public:
+    virtual bool equals(const Figure*) const = 0;
+    virtual ~Figure() {}
+};
+
+class Rectangle : Figure {
+    int a;
+    int b;
+public:
+    Rectangle(int a = 0, int b = 0) : a(a), b(b) {}
+    bool equals(const Figure* fig) const {
+        const Rectangle* rect = dynamic_cast<const Rectangle*>(fig);
+        if (rect) {
+            return a == rect->a && b == rect->b;
+        }
+
+        return false;
+    }
+};
+
+class Triangle : Figure {
+    int a;
+    int b;
+    int c;
+public:
+    Triangle(int a = 0, int b = 0, int c = 0) : a(a), b(b), c(c) {}
+    bool equals(const Figure* fig) const {
+        const Triangle* tri = dynamic_cast<const Triangle*>(fig);
+        if (tri) {
+            return a == tri->a && b == tri->b && c == tri->c;
+        }
+
+        return false;
+    }
+};