infoarena informatica de performanta

int main() {

	int numere ;
	fin >> numere;
	numere = numere * 2;
	//ax^2 + bx + c = 0;
	//x^2 - x - numere = 0;
	int x1 = (1 + sqrt(1 + 4 *(double) numere)/2);
	int myArray[225];
	int ab = 0;
	int bc = 0;
	int ac = 0;
	int z  = 0;
	fout << x1 << "\n";
	for (int i = 1; i <=x1 ; i ++) {
		fin >> myArray[i-1];


		if (i == 1){
			ab = myArray[i-1];
		}else if (i == 2){
			ac = myArray[i-1];;
		}else if(i == x1){
			bc = myArray[i-1];;
		}
	}
	int a = (ab + ac - bc)/2;
	fout << a << " ";
	for (int y = 1 ; y < x1;y++) {

		fout << myArray[y-1] - a << " ";;

	}

	return 0;
}