제출 #146911

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
146911	2019-08-26 14:59:36	bortoz	Potatoes and fertilizers (LMIO19_bulves)	C++17	0 / 100	2 ms	504 KiB

bulves

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#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
#define fi first
#define se second
int main() {
  ios::sync_with_stdio(false);
  int N;
  cin >> N;
  vector<int> V(N);
  set<int> L;
  for (int i = 0; i < N; i++) {
    int a, b;
    cin >> a >> b;
    V[i] = a - b;
    if (V[i] > 0) {
      L.insert(i);
    }
  }
  ll res = 0;
  for (int i = 0; i < N; i++) {
    while (V[i] < 0) {
      auto itR = L.lower_bound(i);
      if (itR == L.end() && itR != L.begin()) {
        itR--;
      }
      auto itL = itR;
      if (itL != L.begin()) {
        itL--;
 
 
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