#include <stdio.h>

typedef struct list {
  int v;
  struct list *n;
} list;

void func (int v, list **e, int *visited, int ans[][2]) {
  list *l = e[v];
  
  visited[v] = 1;
  ans[v][0] = 0;
  ans[v][1] = 0;
  while (l != NULL) {
    if (visited[l->v] <= 0) {
      func(l->v, e, visited, ans);
      if (ans[v][0] < ans[l->v][1]+1) {
        ans[v][0] = ans[l->v][1]+1;
      }
      if (ans[v][1] <= 0 || ans[v][1] > ans[l->v][0]+1) {
        ans[v][1] = ans[l->v][0]+1;
      }
    }
    l = l->n;
  }
  
  return;
}

int main () {
  int n = 0;
  int a = 0;
  int b = 0;
  
  int res = 0;
  
  int ans[200000][2] = {};
  list *e[200000] = {};
  
  list pool[399998] = {};
  int used = 0;
  
  int visited[200000] = {};
  
  res = scanf("%d", &n);
  for (int i = 0; i < n-1; i++) {
    res = scanf("%d", &a);
    res = scanf("%d", &b);
    a--;
    b--;
    pool[used].v = b;
    pool[used].n = e[a];
    e[a] = pool+used;
    used++;
    pool[used].v = a;
    pool[used].n = e[b];
    e[b] = pool+used;
    used++;
  }
  
  func(0, e, visited, ans);
  
  printf("%d\n%d\n", ans[0][0], ans[0][1]);
  return 0;
}