#include <bits/stdc++.h>   using namespace std;   int main() {     ios::sync_with_stdio(0);     cin.tie(0);     long long n = 0, m = 0, mn = 0, mx = 0, l = 1, r = 0, k = 0, j = 1, i = 0,               ans = 0;     cin >> n;     vector<int> a(n);     for (auto &x : a) cin >> x;     bool got = true;     while (got) {       while (i < l) {         if (a[i] > l) {           l = a[i];         }         i++;       }       l = i + 1;       m++;       if (l == n + 1) {         break;       }     }     cout << m << endl;   }   