kachle

#include <stdio.h>
#include <stdlib.h>

int gcd (int a,int b)
{
if (b==0)
return a;
else
return gcd(b, a % b);
}

int LCM (int a,int b) {
   return (abs(a * b) / gcd(a, b));
}


int main(void) {
   double length,width;
    int a=1,b=1,zle=1, l, ll, hodnota, width2, length2,d,s,il, ill,y,x,nova;
    double p[a],z[b], nahrada,nahrada2;

    printf("Minimalni velikost:\n");
    if ((scanf(" %lf %lf", &length, &width)) != 2) {
        printf("Nespravny vstup.");
        return 1;
    }

        if (10000000 < length || width <= 0) {
            printf("Nespravny vstup.");
            return 1;
        }
    length2=length*10;
    width2=width*10;

    printf("Dlazdicky:\n");
    while ((hodnota=(scanf("%lf %lf", &p[a],&z[b]))) && !feof(stdin)) {
        il= p[a - 1]*10;
        ill= z[b - 1]*10;
        l = p[a] * 10;
        ll = z[b] * 10;


        if (hodnota!=2) {
            printf("Nespravny vstup.");
            zle = 0;
            break;
        }

        if (((p[a] * 10) != l) || ((z[b] * 10) != ll)) {
            printf("Nespravny vstup.");
            zle = 0;
            break;
        }


        d=ll;
        s=ll;

            if (a==1 && b==1) {
                while (d<length2){
                    d=d+(l+ll);
                }
            }

        if (a==1 && b==1) {
            while (s<width2){
                s=s+(l+ll);
            }
        }

        if ((a==2) && (b==2)) {
            while (d != length2) {
               if (d<length2) (d = d + (l + ll));
                if (d > length2) (length2 = length2 + (ill+il));
                if (100000000 < length2) break;
            }
        }
        if ((a==2) && (b==2)) {
            while (s != width2) {
                if (s<width2) (s = s + (l + ll));
                if (s > width2) (width2 = width2 + (ill+il));
                if (width2 > 100000000) break;
            }
        }







        if ((a>2) && (b>2)) {
            while (d != length2) {
                if (d<length2) (d = d + (l + ll));
                if (d > length2) (length2 = length2 + (nova));
                if (100000000 < length2) break;
            }
        }
        if ((a!=1) && (b!=1)) {
            while (s != width2) {
                if (s<width2) (s = s + (l + ll));
                if (s > width2) (width2 = width2 + (nova));
                if (width2 > 100000000) break;
            }
        }



        length2=d;
        width2=s;

                 if ( (il+ill)>(ll+l) )
                     {x=(il+ill); y=(ll+l);}
                 else
                     {x=(ll+l); y=(il+ill);}

        nova=LCM(x,y);

        a++;
        b++;
    }

    if (zle==0) return 1;
    if (length2>INT32_MAX) {printf("jkv");return 1;}
    nahrada=length2;
    nahrada2=width2;
    length=nahrada/10;
    width=nahrada2/10;
    printf("\nVelikost: %lf x %lf",length,width);


    return 0;
}