#include<stdio.h>
// ANNAZAR DARUL ISMAWAN
int main()
{
    int locks, stocks, barrels, tlocks, tstocks, tbarrels;
    float lprice,sprice,bprice,lsales,ssales,bsales,sales,comm;
    lprice=45.0;
    sprice=30.0;
    bprice=25.0;
    tlocks=0;
    tstocks=0;
    tbarrels=0;
    printf("\nenter the number of locks and to exit the loop enter -1 for locks\n"); scanf("%d", &locks);
    while(locks!=-1) {
        printf("enter the number of stocks and barrels\n"); scanf("%d%d",&stocks,&barrels);
        tlocks=tlocks+locks;
        tstocks=tstocks+stocks;
        tbarrels=tbarrels+barrels;
        printf("\nenter the number of locks and to exit the loop enter -1 for locks\n"); scanf("%d",&locks);
    }
    printf("\ntotal locks = %d\n",tlocks);
    printf("total stocks = %d\n",tstocks);
    printf("total barrels = %d\n",tbarrels);
    lsales = lprice*tlocks;
    ssales=sprice*tstocks;
    bsales=bprice*tbarrels;
    sales=lsales+ssales+bsales;
    printf("\nthe total sales = %f\n",sales);
    if(sales > 1800.0)
    {
        comm=0.10*1000.0;
        comm=comm+0.15*800;
        comm=comm+0.20*(sales-1800.0);}
    else if(sales > 1000)
    {
        comm =0.10*1000;;
        comm=comm+0.15*(sales-1000);}
    else {
        comm=0.10*sales;}
    printf("the commission is = %f\n",comm);
    return 0;
}