func_code_string: #include <bits/stdc++.h>   using namespace std;   vector<pair<int, int> > v;   int promena[3002];   long long d[3001], s[3002][3002], pom;   int main() {     ios_base::sync_with_stdio(false);     cin.tie(0);     cout.tie(0);     int j, n, i, x, p;     cin >> n;     for (i = 0; i < n; i++) {       cin >> x >> p;       v.push_back(make_pair(x, p));     }     sort(v.begin(), v.end());     d[n - 1] = v[n - 1].second;     for (i = 0; i < n - 1; i++)       for (j = i + 1; j < n; j++)         s[i][j] = s[i][j - 1] + (long long)v[j].first - v[i].first;     for (i = n - 2; i >= 0; i--) {       for (j = i; j < n; j++) {         pom = d[j + 1] + s[i][j] + (long long)v[i].second;         if (promena[i] == 0) {           d[i] = pom;           promena[i] = 1;         } else {           if (d[i] > pom) d[i] = pom;         }       }     }     cout << d[0];     return 0;   }   