#include <stdio.h>
#include <stdlib.h>
int main(void) {
	int valid = 0;
	int l, u;
	char c, p[256];
	while (EOF != scanf("%d-%d %c: %s\n", &l, &u, &c, p)) {
		int n = 0;
		for (int i = 0; p[i]; ++i) {
			if (p[i] == c) n++;
		}
		if (n >= l && n <= u) valid++;
	}
	printf("%d\n", valid);
}