#include<stdio.h>
struct xy {
	int x, y;
}a[1212],b[1212];
int dist(xy a, xy b) {return (a.x - b.x)*(a.x - b.x) + (a.y - b.y)*(a.y - b.y);}
int D[1212][1212][2];
int min(int a, int b) { if (a < b)return a; return b; }
int main() {
	int n, m;
	int i, j;
	scanf("%d%d", &n, &m);
	for (i = 0; i <= m; i++)D[0][i][0] = D[0][i][1] = 2e9;
	D[0][0][0] = 0;
	for (i = 1; i <= n; i++)scanf("%d%d", &a[i].x, &a[i].y);
	for (i = 1; i <= m; i++)scanf("%d%d", &b[i].x, &b[i].y);
	a[0] = a[1];
	for (i = 1; i <= n; i++) {
		D[i][0][1] = 2e9; 
		D[i][0][0] = D[i - 1][0][0] + dist(a[i - 1], a[i]);
		for (j = 1; j <= m; j++) {
			D[i][j][0] = min(D[i - 1][j][0] + dist(a[i - 1], a[i]), D[i - 1][j][1] + dist(b[j], a[i]));
			D[i][j][1] = min(D[i][j - 1][0] + dist(a[i], b[j]), D[i][j - 1][1] + dist(b[j - 1], b[j]));
		}
	}
	printf("%d", D[n][m][0]);
	return 0;
}

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3 2
0 0
1 0
2 0
0 3
1 3