제출 #566065

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
566065		lorenzoferrari	Potatoes and fertilizers (LMIO19_bulves)	C++17	0 / 100	4 ms	468 KiB

bulves

#include <bits/stdc++.h>
using namespace std;
using LL = long long;

struct SlopeTrick {
  LL inc = 0;
  multiset<LL> s;
  void insert(LL x){ s.insert(x - inc); }
  void pop(){ s.erase(s.begin()); }
  void increase(LL v) { inc += v; }
  LL getmin() {
    return *s.begin() + inc;
  }
  multiset<int> get() {
    multiset<int> ans;
    for (LL x : s) ans.insert(x + inc);
    return ans;
  }
};

int main() {
#ifdef LORENZO
  freopen("input.txt", "r", stdin);
  freopen("output.txt", "w", stdout);
#endif
  int n; cin >> n;
  SlopeTrick st;
  LL sum = 0;
  LL ans = 0;
  for (int i = 0, a, b; i < n; ++i) {
    cin >> a >> b;
    int v = b - a;
    sum += v;
    st.increase(v);
    st.insert(v);
    st.insert(v);
    ans += v - st.getmin();
    st.pop();
  }
  cout << ans << "\n";
}

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