tasks_and_deadlines.cpp (665B)
1 #include <bits/stdc++.h> 2 3 using namespace std; 4 5 using ui = unsigned int; 6 using l = long; 7 using ul = unsigned long; 8 using ll = long long; 9 using ull = unsigned long long; 10 11 using vi = vector<int>; 12 using vui = vector<ui>; 13 using vl = vector<l>; 14 using vul = vector<ul>; 15 using vll = vector<ll>; 16 using vull = vector<ull>; 17 18 void solve() 19 { 20 int n; 21 cin >> n; 22 vector<pair<int, int>> t; 23 for (int i = 0; i < n; i++) { 24 int s, e; 25 cin >> s >> e; 26 t.push_back({s, e}); 27 } 28 sort(t.begin(), t.end()); 29 long res = 0, ti = 0; 30 for (auto x : t) { 31 ti += x.first; 32 res += x.second - ti; 33 } 34 cout << res << "\n"; 35 } 36 37 int main() 38 { 39 ios::sync_with_stdio(0); 40 cin.tie(0); 41 solve(); 42 }