func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     vector<pair<int, int> > v_p;     int x1, y1, x2, y2;     cin >> x1 >> y1 >> x2 >> y2;     if (x2 < x1) swap(x1, x2);     if (y2 < y1) swap(y1, y2);     for (int i = y1; i <= y2; i++) {       v_p.push_back(make_pair(x1, i));       v_p.push_back(make_pair(x2, i));     }     for (int i = x1 + 1; i < x2; i++) {       v_p.push_back(make_pair(i, y1));       v_p.push_back(make_pair(i, y2));     }     int n, x, y, r;     cin >> n;     vector<tuple<int, int, int> > v;     for (int i = 0; i < n; i++) {       cin >> x >> y >> r;       v.push_back(make_tuple(x, y, r));     }     int cnt = 0;     for (int i = 0; i < v_p.size(); i++) {       bool flag = 1;       for (int j = 0; j < n; j++) {         int x2 = get<0>(v[j]);         int y2 = get<1>(v[j]);         int r = get<2>(v[j]);         if (r * r >= ((v_p[i].first - x2) * (v_p[i].first - x2)) +                          ((v_p[i].second - y2) * (v_p[i].second - y2))) {           flag = 0;           break;         }       }       if (flag) cnt++;     }     cout << cnt;     return 0;   }   