Problem p02791 (C++)

Buggy submission (status: Runtime Error):
#include <algorithm>
#include <array>
#include <cctype>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <ctype.h>
#include <deque>
#include <iomanip>
#include <iostream>
#include <limits>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <stack>
#include <stdio.h>
#include <string.h>
#include <unordered_map>
#include <utility>
#include <vector>

#define _USE_MATH_DEFINES
#include <iostream>
#include <math.h>
using namespace std;
#define REP(x, n) for (int x = 0; x < n; x++)
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<int, char> pic;
int dx[] = {-1, 0, 1, 0};
int dy[] = {0, -1, 0, 1};
#define bit(x, v) ((ll)x << v)

const ll INF = 1000000007;
const int MAX = 1000010;
const int MOD = 1000000007;

long long fac[MAX], finv[MAX], inv[MAX];
void COMinit() {
  fac[0] = fac[1] = 1;
  finv[0] = finv[1] = 1;
  inv[1] = 1;
  for (int i = 2; i < MAX; i++) {
    fac[i] = fac[i - 1] * i % MOD;
    inv[i] = MOD - inv[MOD % i] * (MOD / i) % MOD;
    finv[i] = finv[i - 1] * inv[i] % MOD;
  }
}

// 二項係数計算
long long COM(int n, int k) {
  if (n < k)
    return 0;
  if (n < 0 || k < 0)
    return 0;
  return fac[n] * (finv[k] * finv[n - k] % MOD) % MOD;
}

ll gcd(ll a, ll b) {
  if (b == 0)
    return a;
  return gcd(b, a % b);
}
int pr[100010];
void uini(int n) {
  for (size_t i = 0; i <= n; i++) {
    pr[i] = i;
  }
}

int parent(int x) {
  if (x == pr[x])
    return x;
  return pr[x] = parent(pr[x]);
}

int same(int x, int y) { return parent(x) == parent(y); }

bool unit(int x, int y) {
  int px = parent(x);
  int py = parent(y);

  if (px == py)
    return false;
  if (px < py) {
    pr[py] = px;
  } else {
    pr[px] = py;
  }
  return true;
}

ll bit[200010];
int max_n = 200000;
int pm = 0;
void add(int x) {

  while (max_n >= x) {
    bit[x]++;
    x += x & -x;
  }
}
void sub(int x) {
  while (max_n >= x) {
    bit[x]--;
    x += x & -x;
  }
}
ll merge(ll *a, int left, int mid, int right) {
  ll n1 = mid - left;
  ll n2 = right - mid;
  vector<int> L(n1 + 1);
  vector<int> R(n2 + 1);
  for (size_t i = 0; i < n1; i++) {
    L[i] = a[left + i];
  }
  for (size_t i = 0; i < n2; i++) {
    R[i] = a[mid + i];
  }

  L[n1] = INF;
  R[n2] = INF;
  ll i = 0;
  ll j = 0;
  ll r = 0;
  for (size_t k = left; k < right; k++) {
    if (L[i] <= R[j]) {
      a[k] = L[i];
      i++;
    } else {
      a[k] = R[j];
      r += n1 - i;
      j++;
    }
  }
  return r;
}
ll merge2(pair<int, char> *a, int left, int mid, int right) {
  ll n1 = mid - left;
  ll n2 = right - mid;
  vector<pair<int, char>> L(n1 + 1);
  vector<pair<int, char>> R(n2 + 1);
  for (size_t i = 0; i < n1; i++) {
    L[i] = a[left + i];
  }
  for (size_t i = 0; i < n2; i++) {
    R[i] = a[mid + i];
  }

  L[n1] = make_pair(INF, ' ');
  R[n2] = make_pair(INF, ' ');
  ll i = 0;
  ll j = 0;
  ll r = 0;
  for (size_t k = left; k < right; k++) {
    if (L[i].first <= R[j].first) {
      a[k] = L[i];
      i++;
    } else {
      a[k] = R[j];
      r += n1 - i;
      j++;
    }
  }
  return r;
}
ll mergeSort2(pair<int, char> *a, int left, int right) {
  ll res = 0;
  if (left + 1 < right) {
    int mid = (left + right) / 2;
    res = mergeSort2(a, left, mid);
    res += mergeSort2(a, mid, right);
    res += merge2(a, left, mid, right);
  }
  return res;
}
ll mergeSort(ll *a, int left, int right) {
  ll res = 0;
  if (left + 1 < right) {
    int mid = (left + right) / 2;
    res = mergeSort(a, left, mid);
    res += mergeSort(a, mid, right);
    res += merge(a, left, mid, right);
  }
  return res;
}
int partition(pair<int, char> *a, int p, int r) {
  pair<int, char> x = a[r];
  int i = p - 1;
  for (size_t j = p; j < r; j++) {
    if (a[j].first <= x.first) {
      i++;
      swap(a[i], a[j]);
    }
  }
  swap(a[i + 1], a[r]);
  return i + 1;
}
void quick(pair<int, char> *a, int p, int r) {
  if (p < r) {
    int q = partition(a, p, r);
    quick(a, p, q - 1);
    quick(a, q + 1, r);
  }
}

ll n;
int ci = 0;
ll P[1000010];
struct Node {
  int key;
  int priority;
  Node *parent, *left, *right;
  Node(int key, int priority);
  Node() {}
};
Node NIL;
Node::Node(int key, int priority) : key(key), priority(priority) {
  left = &NIL;
  right = &NIL;
}
Node *root = new Node();
void cenrec(Node *k) {
  if (k->key == NIL.key)
    return;
  cenrec(k->left);
  cout << " " << k->key;
  cenrec(k->right);
}
void fastrec(Node *k) {
  if (k->key == NIL.key)
    return;
  cout << " " << k->key;
  fastrec(k->left);
  fastrec(k->right);
}
void insert(Node *v) {
  Node *y = &NIL;
  Node *x = root;
  while (x->key != NIL.key) {
    y = x;
    if (v->key < x->key) {
      x = x->left;
    } else {
      x = x->right;
    }
  }
  v->parent = y;
  if (y->key == NIL.key) {
    root = v;
  } else if (v->key < y->key) {
    y->left = v;
  } else {
    y->right = v;
  }
}

Node *find(Node *k, ll v) {
  if (k->key == NIL.key)
    return &NIL;
  if (k->key == v)
    return k;
  if (v < k->key)
    return find(k->left, v);
  return find(k->right, v);
}
void delp12(Node *x) {
  if (x->key == NIL.key)
    return;
  Node *l = x->left;
  Node *r = x->right;
  Node *pr = x->parent;

  if (l->key == NIL.key && r->key == NIL.key) {
    if (pr->left == x) {
      pr->left = &NIL;
    } else
      pr->right = &NIL;
  } else if (l->key != NIL.key) {
    if (pr->left == x) {
      pr->left = l;
    } else
      pr->right = l;
    l->parent = pr;
  } else if (r->key != NIL.key) {
    if (pr->left == x) {
      pr->left = r;
    } else
      pr->right = r;
    r->parent = pr;
  }
}
Node *get_next(Node *k) {
  if (k->key == NIL.key)
    return &NIL;
  Node *res = get_next(k->left);
  if (res->key != NIL.key)
    return res;
  return k;
}
void del(Node *x) {

  if (x->key == NIL.key)
    return;
  Node *l = x->left;
  Node *r = x->right;
  Node *pr = x->parent;

  if (l->key != NIL.key && r->key != NIL.key) {
    Node *nex = get_next(r);
    x->key = nex->key;
    delp12(nex);
  } else {
    delp12(x);
  }
}
Node *rightRotate(Node *t) {
  Node *s = t->left;
  t->left = s->right;
  s->right = t;
  return s;
}
Node *leftRotate(Node *t) {
  Node *s = t->right;
  t->right = s->left;
  s->left = t;
  return s;
}
Node *_insert(Node *t, int key, int priority) {
  if (t->key == NIL.key) {
    return new Node(key, priority);
  }
  if (key == t->key) {
    return t;
  }

  if (key < t->key) {
    t->left = _insert(t->left, key, priority);
    if (t->priority < t->left->priority) {
      t = rightRotate(t);
    }
  } else {
    t->right = _insert(t->right, key, priority);
    if (t->priority < t->right->priority) {
      t = leftRotate(t);
    }
  }
  return t;
}
Node *delete1(Node *t, int key);
Node *_delete(Node *t, int key) {
  if (t->left->key == NIL.key && t->right->key == NIL.key) {
    return &NIL;
  } else if (t->left->key == NIL.key) {
    t = leftRotate(t);
  } else if (t->right->key == NIL.key) {
    t = rightRotate(t);
  } else {
    if (t->left->priority > t->right->priority) {
      t = rightRotate(t);
    } else
      t = leftRotate(t);
  }
  return delete1(t, key);
}
Node *delete1(Node *t, int key) {
  if (t->key == NIL.key) {
    return &NIL;
  }
  if (key < t->key) {
    t->left = delete1(t->left, key);
  } else if (key > t->key) {
    t->right = delete1(t->right, key);
  } else
    return _delete(t, key);
  return t;
}
int H;
int left(int i) { return i * 2 + 1; }
int right(int i) { return i * 2 + 2; }
struct edge {
  int from, to;
  ll val;
  edge(int from, int to, ll val) : from(from), to(to), val(val) {}
};
int k;
int _rank[1010];
int temp[1010];
bool compare_sa(int i, int j) {
  if (_rank[i] != _rank[j])
    return _rank[i] < _rank[j];
  else {
    int ri = i + k <= n ? _rank[i + k] : -1;
    int rj = j + k <= n ? _rank[j + k] : -1;
    return ri < rj;
  }
}
void construct_sa(string S, int *sa) {
  n = S.length();

  for (size_t i = 0; i <= n; i++) {
    sa[i] = i;
    _rank[i] = i < n ? S[i] : -1;
  }

  for (k = 1; k <= n; k *= 2) {
    sort(sa, sa + n + 1, compare_sa);

    // saはソート後の接尾辞の並びになっている、rankは元の位置のindexを保持したまま、更新されている。
    // ピンとこなかった部分
    temp[sa[0]] = 0;
    for (size_t i = 1; i <= n; i++) {
      temp[sa[i]] = temp[sa[i - 1]] + (compare_sa(sa[i - 1], sa[i]) ? 1 : 0);
    }
    for (size_t i = 0; i <= n; i++) {
      _rank[i] = temp[i];
    }
  }
}
bool contain(string S, int *sa, string T) {
  int a = 0, b = S.length();
  // sa は 接尾辞が辞書順に並んでいる、入っているのはその位置のインデックス
  while (b - a > 1) {
    int c = (a + b) / 2;
    if (S.compare(sa[c], T.length(), T) < 0)
      a = c;
    else
      b = c;
  }
  return S.compare(sa[b], T.length(), T) == 0;
}

#define bit(x, v) ((ll)x << v)

class BIT {

  static const int MAX_N = 400010;

public:
  BIT() { memset(bit, 0, sizeof(bit)); }
  ll bit[MAX_N + 1], n;
  ll sum(int i) {
    ll s = 0;
    while (i > 0) {
      s += bit[i];
      i -= i & -i;
    }
    return s;
  }

  void add(int i, int x) {
    while (i <= n) {
      bit[i] += x;
      i += i & -i;
    }
  }
};
struct UnionFind {
  vector<int> A;
  UnionFind(int n) : A(n, -1) {}
  int find(int x) {
    if (A[x] < 0)
      return x;
    return A[x] = find(A[x]);
  }
  void unite(int x, int y) {
    x = find(x), y = find(y);
    if (x == y)
      return;
    if (A[x] > A[y])
      swap(x, y);
    A[x] += A[y];
    A[y] = x;
  }
  int ngroups() {
    int ans = 0;
    for (auto a : A)
      if (a < 0)
        ans++;
    return ans;
  }
};
void yes() {
  cout << "Yes\n";
  exit(0);
}
void no() {
  cout << "No\n";
  exit(0);
}
vector<ll> getp(ll n) {

  vector<ll> res;
  ll a = 2;
  if (n % 2 == 0) {
    res.push_back(2);
    while (n % 2 == 0)
      n /= 2;
  }

  for (ll i = 3; i * i <= n; i += 2) {
    if (n % i == 0) {
      res.push_back(i);
      while (n % i == 0)
        n /= i;
    }
  }
  if (n != 1)
    res.push_back(n);
  return res;
}
vector<ll> getp2(ll n) {

  vector<ll> res;
  ll a = 2;
  if (n % 2 == 0) {

    while (n % 2 == 0) {
      n /= 2;
      res.push_back(2);
    }
  }

  for (ll i = 3; i * i <= n; i += 2) {
    if (n % i == 0) {

      while (n % i == 0) {
        n /= i;
        res.push_back(i);
      }
    }
  }
  if (n != 1)
    res.push_back(n);
  return res;
}
vector<ll> getDivisors(ll n) {

  vector<ll> res;
  ll a = 2;
  res.push_back(1);
  for (ll i = 2; i * i <= n; i++) {

    if (n % i == 0) {
      res.push_back(i);
      if (n / i != i)
        res.push_back(n / i);
    }
  }
  return res;
}

struct ve {
public:
  vector<ve> child;
  int _t = INF;
  ve(int t) : _t(t) {}
  ve(ve _left, ve _right) {
    _t = _left._t + _right._t;
    child.push_back(_left);
    child.push_back(_right);
  }
  bool operator<(const ve &t) const { return _t > t._t; }
};

vector<bool> elas(ll n) {
  vector<bool> r(n);
  fill(r.begin(), r.end(), 1);
  r[0] = 0;
  r[1] = 0;
  for (ll i = 2; i * i < n; i++) {
    if (!r[i])
      continue;
    ll ti = i * 2;
    while (ti < n) {
      r[ti] = false;
      ti += i;
    }
  }
  return r;
}
bool isPrime(ll v) {
  for (ll i = 2; i * i <= v; i++) {
    if (v % i == 0)
      return false;
  }
  return true;
}

void solv() {
  cin >> n;
  int p[100010];
  for (size_t i = 0; i < n; i++) {
    cin >> p[i];
  }

  int mi = INF;
  int cnt = 0;
  for (size_t i = 0; i < n; i++) {
    if (p[i] <= mi) {
      cnt++;
    }
    mi = min(p[i], mi);
  }
  cout << cnt << endl;
}

int main() {
  // COMinit();
  solv();
  return 0;
}

Fixed submission:
#include <algorithm>
#include <array>
#include <cctype>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <ctype.h>
#include <deque>
#include <iomanip>
#include <iostream>
#include <limits>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <stack>
#include <stdio.h>
#include <string.h>
#include <unordered_map>
#include <utility>
#include <vector>

#define _USE_MATH_DEFINES
#include <iostream>
#include <math.h>
using namespace std;
#define REP(x, n) for (int x = 0; x < n; x++)
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<int, char> pic;
int dx[] = {-1, 0, 1, 0};
int dy[] = {0, -1, 0, 1};
#define bit(x, v) ((ll)x << v)

const ll INF = 1000000007;
const int MAX = 1000010;
const int MOD = 1000000007;

long long fac[MAX], finv[MAX], inv[MAX];
void COMinit() {
  fac[0] = fac[1] = 1;
  finv[0] = finv[1] = 1;
  inv[1] = 1;
  for (int i = 2; i < MAX; i++) {
    fac[i] = fac[i - 1] * i % MOD;
    inv[i] = MOD - inv[MOD % i] * (MOD / i) % MOD;
    finv[i] = finv[i - 1] * inv[i] % MOD;
  }
}

// 二項係数計算
long long COM(int n, int k) {
  if (n < k)
    return 0;
  if (n < 0 || k < 0)
    return 0;
  return fac[n] * (finv[k] * finv[n - k] % MOD) % MOD;
}

ll gcd(ll a, ll b) {
  if (b == 0)
    return a;
  return gcd(b, a % b);
}
int pr[100010];
void uini(int n) {
  for (size_t i = 0; i <= n; i++) {
    pr[i] = i;
  }
}

int parent(int x) {
  if (x == pr[x])
    return x;
  return pr[x] = parent(pr[x]);
}

int same(int x, int y) { return parent(x) == parent(y); }

bool unit(int x, int y) {
  int px = parent(x);
  int py = parent(y);

  if (px == py)
    return false;
  if (px < py) {
    pr[py] = px;
  } else {
    pr[px] = py;
  }
  return true;
}

ll bit[200010];
int max_n = 200000;
int pm = 0;
void add(int x) {

  while (max_n >= x) {
    bit[x]++;
    x += x & -x;
  }
}
void sub(int x) {
  while (max_n >= x) {
    bit[x]--;
    x += x & -x;
  }
}
ll merge(ll *a, int left, int mid, int right) {
  ll n1 = mid - left;
  ll n2 = right - mid;
  vector<int> L(n1 + 1);
  vector<int> R(n2 + 1);
  for (size_t i = 0; i < n1; i++) {
    L[i] = a[left + i];
  }
  for (size_t i = 0; i < n2; i++) {
    R[i] = a[mid + i];
  }

  L[n1] = INF;
  R[n2] = INF;
  ll i = 0;
  ll j = 0;
  ll r = 0;
  for (size_t k = left; k < right; k++) {
    if (L[i] <= R[j]) {
      a[k] = L[i];
      i++;
    } else {
      a[k] = R[j];
      r += n1 - i;
      j++;
    }
  }
  return r;
}
ll merge2(pair<int, char> *a, int left, int mid, int right) {
  ll n1 = mid - left;
  ll n2 = right - mid;
  vector<pair<int, char>> L(n1 + 1);
  vector<pair<int, char>> R(n2 + 1);
  for (size_t i = 0; i < n1; i++) {
    L[i] = a[left + i];
  }
  for (size_t i = 0; i < n2; i++) {
    R[i] = a[mid + i];
  }

  L[n1] = make_pair(INF, ' ');
  R[n2] = make_pair(INF, ' ');
  ll i = 0;
  ll j = 0;
  ll r = 0;
  for (size_t k = left; k < right; k++) {
    if (L[i].first <= R[j].first) {
      a[k] = L[i];
      i++;
    } else {
      a[k] = R[j];
      r += n1 - i;
      j++;
    }
  }
  return r;
}
ll mergeSort2(pair<int, char> *a, int left, int right) {
  ll res = 0;
  if (left + 1 < right) {
    int mid = (left + right) / 2;
    res = mergeSort2(a, left, mid);
    res += mergeSort2(a, mid, right);
    res += merge2(a, left, mid, right);
  }
  return res;
}
ll mergeSort(ll *a, int left, int right) {
  ll res = 0;
  if (left + 1 < right) {
    int mid = (left + right) / 2;
    res = mergeSort(a, left, mid);
    res += mergeSort(a, mid, right);
    res += merge(a, left, mid, right);
  }
  return res;
}
int partition(pair<int, char> *a, int p, int r) {
  pair<int, char> x = a[r];
  int i = p - 1;
  for (size_t j = p; j < r; j++) {
    if (a[j].first <= x.first) {
      i++;
      swap(a[i], a[j]);
    }
  }
  swap(a[i + 1], a[r]);
  return i + 1;
}
void quick(pair<int, char> *a, int p, int r) {
  if (p < r) {
    int q = partition(a, p, r);
    quick(a, p, q - 1);
    quick(a, q + 1, r);
  }
}

ll n;
int ci = 0;
ll P[1000010];
struct Node {
  int key;
  int priority;
  Node *parent, *left, *right;
  Node(int key, int priority);
  Node() {}
};
Node NIL;
Node::Node(int key, int priority) : key(key), priority(priority) {
  left = &NIL;
  right = &NIL;
}
Node *root = new Node();
void cenrec(Node *k) {
  if (k->key == NIL.key)
    return;
  cenrec(k->left);
  cout << " " << k->key;
  cenrec(k->right);
}
void fastrec(Node *k) {
  if (k->key == NIL.key)
    return;
  cout << " " << k->key;
  fastrec(k->left);
  fastrec(k->right);
}
void insert(Node *v) {
  Node *y = &NIL;
  Node *x = root;
  while (x->key != NIL.key) {
    y = x;
    if (v->key < x->key) {
      x = x->left;
    } else {
      x = x->right;
    }
  }
  v->parent = y;
  if (y->key == NIL.key) {
    root = v;
  } else if (v->key < y->key) {
    y->left = v;
  } else {
    y->right = v;
  }
}

Node *find(Node *k, ll v) {
  if (k->key == NIL.key)
    return &NIL;
  if (k->key == v)
    return k;
  if (v < k->key)
    return find(k->left, v);
  return find(k->right, v);
}
void delp12(Node *x) {
  if (x->key == NIL.key)
    return;
  Node *l = x->left;
  Node *r = x->right;
  Node *pr = x->parent;

  if (l->key == NIL.key && r->key == NIL.key) {
    if (pr->left == x) {
      pr->left = &NIL;
    } else
      pr->right = &NIL;
  } else if (l->key != NIL.key) {
    if (pr->left == x) {
      pr->left = l;
    } else
      pr->right = l;
    l->parent = pr;
  } else if (r->key != NIL.key) {
    if (pr->left == x) {
      pr->left = r;
    } else
      pr->right = r;
    r->parent = pr;
  }
}
Node *get_next(Node *k) {
  if (k->key == NIL.key)
    return &NIL;
  Node *res = get_next(k->left);
  if (res->key != NIL.key)
    return res;
  return k;
}
void del(Node *x) {

  if (x->key == NIL.key)
    return;
  Node *l = x->left;
  Node *r = x->right;
  Node *pr = x->parent;

  if (l->key != NIL.key && r->key != NIL.key) {
    Node *nex = get_next(r);
    x->key = nex->key;
    delp12(nex);
  } else {
    delp12(x);
  }
}
Node *rightRotate(Node *t) {
  Node *s = t->left;
  t->left = s->right;
  s->right = t;
  return s;
}
Node *leftRotate(Node *t) {
  Node *s = t->right;
  t->right = s->left;
  s->left = t;
  return s;
}
Node *_insert(Node *t, int key, int priority) {
  if (t->key == NIL.key) {
    return new Node(key, priority);
  }
  if (key == t->key) {
    return t;
  }

  if (key < t->key) {
    t->left = _insert(t->left, key, priority);
    if (t->priority < t->left->priority) {
      t = rightRotate(t);
    }
  } else {
    t->right = _insert(t->right, key, priority);
    if (t->priority < t->right->priority) {
      t = leftRotate(t);
    }
  }
  return t;
}
Node *delete1(Node *t, int key);
Node *_delete(Node *t, int key) {
  if (t->left->key == NIL.key && t->right->key == NIL.key) {
    return &NIL;
  } else if (t->left->key == NIL.key) {
    t = leftRotate(t);
  } else if (t->right->key == NIL.key) {
    t = rightRotate(t);
  } else {
    if (t->left->priority > t->right->priority) {
      t = rightRotate(t);
    } else
      t = leftRotate(t);
  }
  return delete1(t, key);
}
Node *delete1(Node *t, int key) {
  if (t->key == NIL.key) {
    return &NIL;
  }
  if (key < t->key) {
    t->left = delete1(t->left, key);
  } else if (key > t->key) {
    t->right = delete1(t->right, key);
  } else
    return _delete(t, key);
  return t;
}
int H;
int left(int i) { return i * 2 + 1; }
int right(int i) { return i * 2 + 2; }
struct edge {
  int from, to;
  ll val;
  edge(int from, int to, ll val) : from(from), to(to), val(val) {}
};
int k;
int _rank[1010];
int temp[1010];
bool compare_sa(int i, int j) {
  if (_rank[i] != _rank[j])
    return _rank[i] < _rank[j];
  else {
    int ri = i + k <= n ? _rank[i + k] : -1;
    int rj = j + k <= n ? _rank[j + k] : -1;
    return ri < rj;
  }
}
void construct_sa(string S, int *sa) {
  n = S.length();

  for (size_t i = 0; i <= n; i++) {
    sa[i] = i;
    _rank[i] = i < n ? S[i] : -1;
  }

  for (k = 1; k <= n; k *= 2) {
    sort(sa, sa + n + 1, compare_sa);

    // saはソート後の接尾辞の並びになっている、rankは元の位置のindexを保持したまま、更新されている。
    // ピンとこなかった部分
    temp[sa[0]] = 0;
    for (size_t i = 1; i <= n; i++) {
      temp[sa[i]] = temp[sa[i - 1]] + (compare_sa(sa[i - 1], sa[i]) ? 1 : 0);
    }
    for (size_t i = 0; i <= n; i++) {
      _rank[i] = temp[i];
    }
  }
}
bool contain(string S, int *sa, string T) {
  int a = 0, b = S.length();
  // sa は 接尾辞が辞書順に並んでいる、入っているのはその位置のインデックス
  while (b - a > 1) {
    int c = (a + b) / 2;
    if (S.compare(sa[c], T.length(), T) < 0)
      a = c;
    else
      b = c;
  }
  return S.compare(sa[b], T.length(), T) == 0;
}

#define bit(x, v) ((ll)x << v)

class BIT {

  static const int MAX_N = 400010;

public:
  BIT() { memset(bit, 0, sizeof(bit)); }
  ll bit[MAX_N + 1], n;
  ll sum(int i) {
    ll s = 0;
    while (i > 0) {
      s += bit[i];
      i -= i & -i;
    }
    return s;
  }

  void add(int i, int x) {
    while (i <= n) {
      bit[i] += x;
      i += i & -i;
    }
  }
};
struct UnionFind {
  vector<int> A;
  UnionFind(int n) : A(n, -1) {}
  int find(int x) {
    if (A[x] < 0)
      return x;
    return A[x] = find(A[x]);
  }
  void unite(int x, int y) {
    x = find(x), y = find(y);
    if (x == y)
      return;
    if (A[x] > A[y])
      swap(x, y);
    A[x] += A[y];
    A[y] = x;
  }
  int ngroups() {
    int ans = 0;
    for (auto a : A)
      if (a < 0)
        ans++;
    return ans;
  }
};
void yes() {
  cout << "Yes\n";
  exit(0);
}
void no() {
  cout << "No\n";
  exit(0);
}
vector<ll> getp(ll n) {

  vector<ll> res;
  ll a = 2;
  if (n % 2 == 0) {
    res.push_back(2);
    while (n % 2 == 0)
      n /= 2;
  }

  for (ll i = 3; i * i <= n; i += 2) {
    if (n % i == 0) {
      res.push_back(i);
      while (n % i == 0)
        n /= i;
    }
  }
  if (n != 1)
    res.push_back(n);
  return res;
}
vector<ll> getp2(ll n) {

  vector<ll> res;
  ll a = 2;
  if (n % 2 == 0) {

    while (n % 2 == 0) {
      n /= 2;
      res.push_back(2);
    }
  }

  for (ll i = 3; i * i <= n; i += 2) {
    if (n % i == 0) {

      while (n % i == 0) {
        n /= i;
        res.push_back(i);
      }
    }
  }
  if (n != 1)
    res.push_back(n);
  return res;
}
vector<ll> getDivisors(ll n) {

  vector<ll> res;
  ll a = 2;
  res.push_back(1);
  for (ll i = 2; i * i <= n; i++) {

    if (n % i == 0) {
      res.push_back(i);
      if (n / i != i)
        res.push_back(n / i);
    }
  }
  return res;
}

struct ve {
public:
  vector<ve> child;
  int _t = INF;
  ve(int t) : _t(t) {}
  ve(ve _left, ve _right) {
    _t = _left._t + _right._t;
    child.push_back(_left);
    child.push_back(_right);
  }
  bool operator<(const ve &t) const { return _t > t._t; }
};

vector<bool> elas(ll n) {
  vector<bool> r(n);
  fill(r.begin(), r.end(), 1);
  r[0] = 0;
  r[1] = 0;
  for (ll i = 2; i * i < n; i++) {
    if (!r[i])
      continue;
    ll ti = i * 2;
    while (ti < n) {
      r[ti] = false;
      ti += i;
    }
  }
  return r;
}
bool isPrime(ll v) {
  for (ll i = 2; i * i <= v; i++) {
    if (v % i == 0)
      return false;
  }
  return true;
}

void solv() {
  cin >> n;
  int p[200010];
  for (size_t i = 0; i < n; i++) {
    cin >> p[i];
  }

  int mi = INF;
  int cnt = 0;
  for (size_t i = 0; i < n; i++) {
    if (p[i] <= mi) {
      cnt++;
    }
    mi = min(p[i], mi);
  }
  cout << cnt << endl;
}

int main() {
  // COMinit();
  solv();
  return 0;
}