/*
 Author: 曹北健(37509)
 Result: AC Submission_id: 4242607
 Created at: Mon Mar 28 2022 21:51:26 GMT+0800 (China Standard Time)
 Problem: 5428  Time: 3 Memory: 1696
*/

#include <stdio.h>
int main(){
    char x;
    int ans[6] = { 0 }, n, a, b, i, j;
    scanf("%d", &n);
    while(~scanf("%x %c %x", &a, &x, &b)){
        if(x == '<'){
            ans[b - 0xa] += 1;
        }
        else{
            ans[a - 0xa] += 1;
        }
    }
    for(j = 4; j >= 0; j--){
        for(i = 0; i < n; i++){
            if(ans[i] == j){
                printf("%c:%d\n", i + 'A', j);
            }
        }
    }
}