Давид 4 задача

#include<iostream>
#include<cmath>

using namespace std;

double finder(double a, double b, double h1, double c, double d, double h2, double& count){
    int n1 =  int((b + h1/2. - a)/h1) + 1;
    int n2 =  int((d + h2/2. - c)/h2) + 1;
    count = 0;
    double sum = 0;
    double x, y, z;
    for(int i=1; i<n1; ++i){
        x = a + (i-1) * h1;
        for(int j=1; j<n2; ++j){
            y = c + (j-1) * h2;
            z = y - (0.1*sin(x)/2);
            if(z < 0){
                count++;
                sum+=z;
            }
        }
    }
    return sum;
}

int main(){
    double a,  b,  h1,  c,  d,  h2, count, sum;
    cin >> a >>  b >>  h1 >>  c >>  d >>  h2;
    sum = finder(a,  b,  h1,  c,  d,  h2, count);
    cout << sum << endl << count;
}