#include <stdio.h>
#include <vector>

using namespace std;

#define maxn 1048576
#define maxl 13
#define ll long long
#define ui unsigned int

int n,x,y;
ll sol;
ui a[maxn];
char v[maxl];

int main()
{
	freopen("secv5.in","r",stdin);
	freopen("secv5.out","w",stdout);

	scanf("%d %d %d ",&n,&x,&y);

	int i,j,l;

	for (i=0;i<n;i++)
	{
	//	scanf("%s ",v);
	//	l = strlen(v);
		fgets(v,maxl,stdin);

		for (j=0;v[j]!='\n';j++) a[i] = a[i] * 10 + v[j] - '0';
	}

	printf("%lld\n",sol);

	return 0;
}