mosquito.cpp

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
 
int main()
{
	int a[3];
	int b[3];
	int N;
 
	while(scanf("%i %i %i %i %i %i %i",&a[0],&a[1],&a[2],&b[0],&b[1],&b[2], &N)==7)
	{
		int z = N % 3;
 
		int x = a[z];
 
		int y2 = b[1] * b[2];
 
		int y1 = b[0];
 
		for (int i = z; i>=1; i--)
		{
			x = x / b[i];
		}
 
		int d;
 
		if ((y1 != 0) && (N >= 3))
		{
 
			if (y1 > y2)
			{
				d = y1 / y2;
				if (d != 1)			
					x = x * (d * (N / 3)); 
			}
			if (y1 < y2)
			{
				d = y2 / y1;
				if (d != 1)	
					x = x / (d * (N / 3)); 
			}
		}
 
		else
		{
			if ( N >= 3)
				x = 0;
		}
 
		printf("%i\n",x);
 
 
}	
return 0;
}