func_code_string: #include <bits/stdc++.h>   using namespace std;   struct target {     long double x;     long double y;     long long t;     long double p;     bool operator<(const target &b) const;   };   bool target::operator<(const target &b) const { return t < b.t; }   int main() {     cout.precision(30);     vector<target> v;     int n;     cin >> n;     for (int i = 0; i < n; i++) {       target t;       cin >> t.x >> t.y >> t.t >> t.p;       v.push_back(t);     }     sort(v.begin(), v.end());     long double score[1010];     for (long long i = n - 1; i >= 0; i--) {       long double baseScore = v[i].p;       score[i] = v[i].p;       for (long long i2 = i + 1; i2 < n; i2++) {         long double dist = sqrt((v[i].x - v[i2].x) * (v[i].x - v[i2].x) +                                 (v[i].y - v[i2].y) * (v[i].y - v[i2].y));         if (dist <= v[i2].t - v[i].t) {           if (baseScore + score[i2] > score[i]) {             score[i] = baseScore + score[i2];           }         }       }     }     long double maxScore = score[0];     for (int i = 1; i < n; i++) {       if (score[i] > maxScore) {         maxScore = score[i];       }     }     cout << maxScore << endl;   }   