2068: [example 2.6] chicken and rabbit in the same cage

2068：【 example 2.6】 Chicken and rabbit in the same cage

The time limit : 1000 ms         Memory limit : 65536 KB
Submission number : 26814     Passing number : 14309

【 Title Description 】

Classic in Mathematics “ Chicken and rabbit in the same cage ” problem , Known head total x individual , Total feet y only , Ask how many chickens and rabbits there are in the cage ?

【 Input 】

The number of heads and feet .

【 Output 】

The number of chickens and rabbits . A space separates .

【 sample input 】

30 90

【 sample output 】

15 15

#include<iostream>
using namespace std;
int main()
{
	int x, y;
	cin >> x >> y;
	int ra, ch;
	for (ra = 1; ra < x; ra++)
	{
		ch = x - ra;
		if (ch * 2 + ra * 4 == y)
			cout << ch << " " << ra;

	}
}