2006 Figura

#include <iostream>

using namespace std;

double f(double x) {
    return x*x/50;
}

double g(double x) {
    return 1+x*x/100-x/200;
}

double task_one() {
    double surface = 0;
    float step = 0.1;

    //nad OX
    for (float i = 0; i < 10; i += step) {
        double a = g(i);
        double b = g(i+step);
        surface += ((a+b)*step)/2;
    }
    //pod OY
    for (float i = 0; i < 10; i += step) {
        double a = f(i);
        double b = f(i+step);
        surface += ((a+b)*step)/2;
    }
    cout.precision(4);
    return surface;
}

double task_two() {

    int a = 26;
    int b = 100;
    double minX, maxX, minY, maxY;

    for (double i = 0; ; i++) {
        if ((int)g(i) + (int)f(i) >= a) {
            minX = i;
            maxX = i + b;
            maxY = (int)g(i);
            minY = maxY - a;
        break;
        }
    }
    cout << "C- " << maxX << endl;
    cout << "A: " << minX << " , " << maxY << endl;
    cout << "B: " << minX << " , " << minY << endl;
    cout << "C: " << maxX << " , " << maxY << endl;
    cout << "D: " << maxX << " , " << minY << endl;
}

int main() {
    cout << task_one() << endl;
    task_two();
}