#include <iostream>

#include <math.h>

using namespace std;

int main() {

double vineyardArea;

double grapePerSquare;

double neededLiters;

int workers;

cin >> vineyardArea;

cin >> grapePerSquare;

cin >> neededLiters;

cin >> workers;

double harvestPerWine = vineyardArea*0.4*grapePerSquare;

double wine = harvestPerWine/2.5;

if (wine>=neededLiters){

double totalWine = floor(wine);

double litersLeft = ceil(totalWine-neededLiters);

double literPerPerson = ceil(litersLeft/(double)workers);

cout << "Good harvest this year! Total wine: " <<

totalWine << " liters." << endl;

cout << litersLeft << " liters left -> " <<

literPerPerson << " liters per person. " << endl;   

}

else

{

double litersNeeded = floor(neededLiters-wine);

cout << "It will be a tough winter! More " << 

litersNeeded << " liters wine needed." << endl;

}

return 0;

}