#include <stdio.h>

int main()
{
	int	bangou[10];
	int	tokuten[10];
	int	hyouka[10];
	int	i, goukei = 0, heikin, sa, h;

	for (i = 0; i < 10; i++) {
		scanf("%d %d", &bangou[i], &tokuten[i]);
		goukei += tokuten[i];
	}
	heikin = goukei / 10;
	for (i = 0; i < 10; i++) {
		sa = tokuten[i] - heikin;

		if (20 <= sa) h = 0;
		else if (10 <= sa) h = 1;
		else if (0 <= sa) h = 2;
		else if (-20 <= sa) h = 3;
		else h = 4;

		hyouka[i] = h;
	}
	for (h = 0; h < 5; h++) {
		printf("\n評価:%c\n", "SABCF"[h]);
		for (i = 0; i < 10; i++) {
			if (hyouka[i] == h) {
				printf("%d %d\n", bangou[i], tokuten[i]);
			}
		}
	}
	return 0;
}