func_code_string: #include <bits/stdc++.h>   int main() {     std::ios::sync_with_stdio(false);     std::cin.tie(0);     std::cout.tie(0);     int32_t n;     std::cin >> n;     std::set<std::pair<int32_t, int32_t> > segments;     for (int32_t i = 0; i < n; i++) {       int32_t left, right;       std::cin >> left >> right;       auto it = segments.lower_bound({left, 0});       if (it != segments.begin()) {         it--;         if (it->second < left) it++;       }       int32_t min_left = left, max_right = right;       while (it != segments.end() &&              ((it->second >= left && it->second <= right) ||               (it->first >= left && it->first <= right) ||               (it->first <= left && it->second >= right))) {         min_left = std::min(min_left, it->first);         max_right = std::max(max_right, it->second);         auto next = it;         next++;         segments.erase(it);         it = next;       }       segments.emplace(min_left, max_right);       std::cout << segments.size() <<    ;     }     return 0;   }   