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1sem/programming basics/z3/7.cpp

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+// pb_z3_7.cpp
+// Горбацевич Андрей
+#include <iostream>
+using namespace std;
+
+int find_most_frequent(int a, int b, int c, int d)
+{
+	int s;
+	s = a + b + c + d;
+	return (s == 2 ? -1 : (s > 2 ? 1 : 0));
+}
+
+int main()
+{
+	int a, d, c, b;
+	cout << ("a,b,c,d=?");
+	cin >> a >> b >> c >> d;
+	cout << find_most_frequent(a, b, c, d);
+}

1sem/programming basics/z3/8.cpp

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+// pb_z3_8.cpp
+// Горбацевич Андрей
+#include <iostream>
+#include <cmath>
+using namespace std;
+
+float inline sqr(float i) 
+{
+	return i * i;
+}
+
+float dist(float x1, float y1, float x2, float y2)
+{
+	float d = sqrt(sqr(x2 - x1) + sqr(y2 - y1));
+	return d;
+}
+
+int main()
+{
+	float x1, y1, x2, y2;
+	cout << "x1,y1,x2,y2\n";
+	cin >> x1>> y1 >> x2 >> y2;
+	cout << dist(x1, y1, x2, y2);
+}

1sem/programming basics/z3/9.cpp

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+// pb_z3_9.cpp
+// Горбацевич Андрей
+#include <cmath>
+#include <iostream>
+#include<algorithm>
+using namespace std;
+
+float min_or_max(float a, float b, float c)
+{
+    if (a > 0.5)
+        return max(b, c);
+    else
+        return min(b, c);
+}
+
+int main()
+{
+    float a, b, c;
+    cin >> a >> b >> c;
+    float d = min_or_max(a, b, c);
+    cout << d << endl;
+}