from sys import stdin
from random import randint
from collections import deque, defaultdict as dd
from copy import deepcopy
input = stdin.readline
MOD = 998244353
INF = 1 << 60
xor = randint(100, INF)


def main():
    n = int(input())
    a = list(map(int, input().split()))
    ans = n*(n+1)//2+1
    pre = a[0]
    cnt = 0
    for i in range(n):
        if pre==a[i]:
            cnt += 1
        else:
            ans -= cnt*(cnt+1)//2
            pre = a[i]
            cnt = 1
    ans -= cnt*(cnt+1)//2
    print(ans)


if __name__ == "__main__":
    main()