import sys sys.setrecursionlimit(10**6) int1 = lambda x: int(x)-1 p2D = lambda x: print(*x, sep="\n") def II(): return int(sys.stdin.buffer.readline()) def LI(): return list(map(int, sys.stdin.buffer.readline().split())) def LI1(): return list(map(int1, sys.stdin.buffer.readline().split())) def LLI(rows_number): return [LI() for _ in range(rows_number)] def LLI1(rows_number): return [LI1() for _ in range(rows_number)] def BI(): return sys.stdin.buffer.readline().rstrip() def SI(): return sys.stdin.buffer.readline().rstrip().decode() # dij = [(0, 1), (-1, 0), (0, -1), (1, 0)] dij = [(0, 1), (-1, 0), (0, -1), (1, 0), (1, 1), (1, -1), (-1, 1), (-1, -1)] inf = 10**16 # md = 998244353 md = 10**9+7 from collections import defaultdict from bisect import bisect class SegtreeMin(): def __init__(self, n): self.inf = 10**16 aa = [] if not isinstance(n, int): aa = n n = len(aa) self.tree_width = tw = 1 << (n-1).bit_length() self.tree = [self.inf]*(tw*2-1) if aa: self.tree[tw-1:tw-1+len(aa)] = aa for i in range(tw-2, -1, -1): self.tree[i] = min(self.tree[i*2+1], self.tree[i*2+2]) def update(self, i, a): seg_i = self.tree_width-1+i self.tree[seg_i] = a while seg_i != 0: seg_i = (seg_i-1)//2 self.tree[seg_i] = min(self.tree[seg_i*2+1], self.tree[seg_i*2+2]) def element(self, i): return self.tree[self.tree_width-1+i] # [l,r)の最小値 def min(self, l, r): if l==r:return self.inf res = self.inf stack = [(0, 0, self.tree_width)] while stack: seg_i, segL, segR = stack.pop() if l <= segL and segR <= r: if self.tree[seg_i] < res: res = self.tree[seg_i] else: segM = (segL+segR)//2 if r > segL and segM > l: stack.append((seg_i*2+1, segL, segM)) if r > segM and segR > l: stack.append((seg_i*2+2, segM, segR)) return res # [l,r)でaより小さい要素のうち最右のインデックス def LessR(self, l, r, a): stack = [(0, 0, self.tree_width)] while stack: u, ul, ur = stack.pop() if ur-ul == 1: return u-self.tree_width+1 um = (ul+ur)//2 if self.tree[u*2+1] < a and ul < r and l < um: stack.append((u*2+1, ul, um)) if self.tree[u*2+2] < a and um < r and l < ur: stack.append((u*2+2, um, ur)) return -1 # [l,r)でaより小さい要素のうち最左のインデックス def LessL(self, l, r, a): stack = [(0, 0, self.tree_width)] while stack: u, ul, ur = stack.pop() if ur-ul == 1: return u-self.tree_width+1 um = (ul+ur)//2 if self.tree[u*2+2] < a and um < r and l < ur: stack.append((u*2+2, um, ur)) if self.tree[u*2+1] < a and ul < r and l < um: stack.append((u*2+1, ul, um)) return -1 n=II() aa=LI() st=SegtreeMin(aa) atoi=defaultdict(list) for i,a in enumerate(aa): atoi[a].append(i) ans=0 now=n-1 for a in sorted(set(aa),reverse=True): ii=atoi[a] j=bisect(ii,now)-1 if j==-1:j=len(ii)-1 if ii[j]<=now: if st.min(ii[j],now)1 :ans+=1 if j==0 and ii[j]-ii[j-1]!=-n+1 :ans+=1 j=(j-1)%len(ii) now=ii[j] # print(a,ans) print(ans)