add task 3

Author: japersik

task_3_1155/1155.cpp

@@ -0,0 +1,69 @@
+#include <iostream>
+
+using namespace std;
+
+struct Point{
+    char ch;
+    int n;
+};
+
+void minus_p(Point* x, Point* y) {
+    --(x->n);
+    --(y->n);
+    cout << y->ch << x->ch << '-' << endl;
+};
+
+void plus_p(Point* x, Point* y) {
+    ++(x->n);
+    ++(y->n);
+    cout << y->ch << x->ch << '+' << endl;
+};
+
+int main() {
+    Point a = {'A'}, b = {'B'}, c = {'C'}, d = {'D'}, e = {'E'}, f = {'F'}, g = {'G'}, h = {'H'};
+    cin >> a.n >> b.n >> c.n >> d.n >> e.n >> f.n >> g.n >> h.n;
+    if (a.n + c.n + f.n + h.n != b.n + d.n + e.n + g.n) {
+        cout << "IMPOSSIBLE" << endl;
+        return 0;
+    }
+
+    while (a.n + c.n + f.n + h.n > 0) {
+        if (a.n > 0) {
+            if (b.n > 0) minus_p (&a, &b);
+            else if (d.n > 0) minus_p(&a, &d);
+            else if (e.n > 0) minus_p(&a, &e);
+            else if (g.n > 0) {
+                plus_p(&f,&b);
+                minus_p (&a, &b);
+            }
+        }
+        else if (h.n > 0) {
+            if (g.n > 0) minus_p(&h, &g);
+            else if (e.n > 0) minus_p(&h, &e);
+            else if (d.n > 0) minus_p(&h, &d);
+            else if (b.n > 0) {
+                plus_p(&d,&c);
+                minus_p(&h, &d);
+            }
+        }
+        else if (f.n > 0) {
+            if (b.n > 0) minus_p(&f, &b);
+            else if (e.n > 0) minus_p(&f, &e);
+            else if (g.n > 0) minus_p(&f, &g);
+            else if (d.n > 0) {
+                plus_p(&a,&b);
+                minus_p(&f, &b);
+            }
+        }
+        else if (c.n > 0) {
+            if (g.n > 0) minus_p(&c, &g);
+            else if (d.n > 0) minus_p(&c, &d);
+            else if (b.n > 0) minus_p(&b, &c);
+            else if (e.n > 0) {
+                plus_p(&f,&b);
+                minus_p(&b, &c);
+            }
+        }
+    }
+    return 0;
+}