import sys def input(): return sys.stdin.readline().strip() def list2d(a, b, c): return [[c] * b for i in range(a)] def list3d(a, b, c, d): return [[[d] * c for j in range(b)] for i in range(a)] def list4d(a, b, c, d, e): return [[[[e] * d for j in range(c)] for j in range(b)] for i in range(a)] def ceil(x, y=1): return int(-(-x // y)) def INT(): return int(input()) def MAP(): return map(int, input().split()) def LIST(N=None): return list(MAP()) if N is None else [INT() for i in range(N)] def Yes(): print('Yes') def No(): print('No') def YES(): print('YES') def NO(): print('NO') sys.setrecursionlimit(10 ** 9) INF = 10 ** 18 MOD = 10 ** 9 + 7 EPS = 10 ** -10 def bisearch_min(mn, mx, func): """ 条件を満たす最小値を見つける二分探索 """ ok = mx ng = mn while ng+1 < ok: mid = (ok+ng) // 2 if func(mid): ok = mid else: ng = mid return ok def get_sum(a, d, n): """ 等差数列の和:(初項a, 公差d, 項数n) """ return (2*a + (n-1)*d) * n // 2 N = INT() res = bisearch_min(0, INF, lambda x: get_sum(1, 1, x) >= N) ans = get_sum(1, 1, res) if ans == N: YES() print(res) else: NO()