#include <bits/stdc++.h>   using namespace std;   void solve() {     long long n;     cin >> n;     vector<long long> a(n + 1), b(n + 1);     for (int i = 1; i <= n; i++) cin >> a[i] >> b[i];     long long k;     cin >> k;     long long x;     for (int i = 1; i <= n; i++)       if (k >= a[i] && k <= b[i]) {         x = i;         break;       }     cout << n - x + 1;   }   int main() {     ios_base::sync_with_stdio(0);     cin.tie(NULL);     cout.tie(0);     solve();   }   