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task2.cpp

@@ -1,82 +1,39 @@
-#include <iostream>
-#include <cstdlib>
-#include <ctime>
-using namespace std;
-
-int main() {
-    int level;
-    int questions;
-    int correct = 0;
-    
-    srand(time(0));
-    
-    cout << "=== ПЕРЕВIРКА ТАБЛИЦI МНОЖЕННЯ ===" << endl;
-    cout << "Оберiть рiвень складностi:" << endl;
-    cout << "1) Легкий (1-5, 5 питань)" << endl;
-    cout << "2) Середнiй (1-10, 7 питань)" << endl;
-    cout << "3) Важкий (1-15, 10 питань)" << endl;
-    cout << "Введiть номер рiвня (1-3): ";
-    cin >> level;
-    
-    switch(level) {
-        case 1:
-            questions = 5;
-            cout << "\n=== ЛЕГКИЙ РIВЕНЬ ===" << endl;
-            break;
-        case 2:
-            questions = 7;
-            cout << "\n=== СЕРЕДНIЙ РIВЕНЬ ===" << endl;
-            break;
-        case 3:
-            questions = 10;
-            cout << "\n=== ВАЖКИЙ РIВЕНЬ ===" << endl;
-            break;
-        default:
-            cout << "Невiрний вибiр!" << endl;
-            return 1;
-    }
-    
-    for (int i = 1; i <= questions; i++) {
-        int a, b, answer, userAnswer;
-        
-        if (level == 1) {
-            a = rand() % 5 + 1;
-            b = rand() % 5 + 1;
-        } else if (level == 2) {
-            a = rand() % 10 + 1;
-            b = rand() % 10 + 1;
-        } else {
-            a = rand() % 15 + 1;
-            b = rand() % 15 + 1;
-        }
-        
-        answer = a * b;
-        
-        cout << "\nПитання " << i << "/" << questions << ": " << a << " * " << b << " = ";
-        cin >> userAnswer;
-        
-        if (userAnswer == answer) {
-            cout << "Правильно! +1 бал" << endl;
-            correct++;
-        } else {
-            cout << "Неправильно! Правильна вiдповiдь: " << answer << endl;
-        }
-    }
-    
-    cout << "\n=== РЕЗУЛЬТАТИ ===" << endl;
-    cout << "Правильних вiдповiдей: " << correct << " з " << questions << endl;
-    
-    double percentage = (double)correct / questions * 100;
-    
-    if (percentage >= 90) {
-        cout << "Оцiнка: ВIДМIННО! (5)" << endl;
-    } else if (percentage >= 80) {
-        cout << "Оцiнка: ДОБРЕ (4)" << endl;
-    } else if (percentage >= 70) {
-        cout << "Оцiнка: ЗАДОВIЛЬНО (3)" << endl;
-    } else {
-        cout << "Оцiнка: НЕЗАДОВIЛЬНО (2)" << endl;
-    }
-    
-    return 0;
-}
+#include <iostream>
+using namespace std;
+
+int main() {
+    double ab;
+    double bc;
+    double weight;
+    cout << "Distance A-B: ";
+    cin >> ab;
+    cout << "Distance B-C: ";
+    cin >> bc;
+    cout << "Cargo weight: ";
+    cin >> weight;
+
+    double fuel;
+    if (weight <= 500) fuel = 1;
+    else if (weight <= 1000) fuel = 4;
+    else if (weight <= 1500) fuel = 7;
+    else if (weight <= 2000) fuel = 9;
+    else {
+        cout << "The airplane cannot lift such a load!" << endl;
+        return 0;
+    }
+
+    double nAB = ab * fuel;
+    double nBC = bc * fuel;
+
+    if (nAB > 300) {
+        cout << "It is impossible to reach point B by flight." << endl;
+    }
+    else if (nBC > 300) {
+        cout << "It is impossible to fly from B to C." << endl;
+    }
+    else {
+        double fill = max(0.0, nBC - (300 - nAB));
+        cout << "Minimum refuel at B: " << fill << " liters." << endl;
+    }
+    return 0;
+}