#include <iostream>
#include <stdlib.h>
using namespace std;
int main ()
{
    char c; 
    float x,y,z;
    do
    {   cout<<"Raschet "<<endl;
        cout<<"Input data: "<<endl;
        cout<<"1 kg apple "; cin>>x; 
        if (x<0) break;
        cout<<"Ves ";    cin>>y;
        if (y<0) break;
        z=y*x;
        cout<<"Itog   "<<z<<endl;
        cout<<"repeat (y/n)"<<endl;
        getchar();
        c=getchar();
        } 
        while (c!='n');
}