#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
int compare(const void *a, const void *b) { return (*(char *)a - *(char *)b); }
void quicksort(char *str, int left, int right) {
    if (left < right) {
        int i = left, j = right;
        char pivot = str[(left + right) / 2];
        while (i <= j) {
            while (str[i] < pivot) i++;
            while (str[j] > pivot) j--;
            if (i <= j) {
                char temp = str[i];
                str[i] = str[j];
                str[j] = temp;
                i++;
                j--;
            }
        }
        quicksort(str, left, j);
        quicksort(str, i, right);
    }
}
bool check(const char *str1, const char *str2) {
    int len1 = strlen(str1);
    int len2 = strlen(str2);
    bool visited[256] = { false };
    for (int i = 0; i < len2; i++) {
        visited[(unsigned char)str2[i]] = true;
    }

    for (int i = 0; i < len1; i++) {
        if (!visited[(unsigned char)str1[i]]) {
            return false;
        }
    }

    return true;
}
int main(int argc, char const *argv[]) {
    int N;
    char ans[10];
    char res[10];
    int score = 0;
    scanf("%d", &N);
    for (int i = 0; i < N; i++) {
        scanf("%s", ans);
        scanf("%s", res);
        quicksort(ans, 0, strlen(ans) - 1);
        quicksort(res, 0, strlen(res) - 1);
        if (strcmp(ans, res) == 0) {
            if (strlen(ans) == 1) {
                score += 3;
            } else {
                score += 5;
            }
        } else {
            if (strlen(ans) < strlen(res)) {
                if (check(ans, res)) {
                    score += 2;
                }
            }
        }
    }
    printf("%d", score);
    return 0;
}