extern int __VERIFIER_nondet_int(void);

int foo(int x,int y,int i,int r,int N){
N = 10;
x = 0;
y = 0;
i = 0;
while (i < N) {
		i = i + 1;
		r = __VERIFIER_nondet_int();
		if (r >= 0 && r <= 3) {
			if (r == 0) {
				x = x + 1;
			} else {if (r == 1) {
				x = x - 1;
			} else {if (r == 2) {
				y = y + 1;
			} else {if (r == 3) {
				y = y - 1;
            }}}}
		}
	}
return 0;
}