제출 #519799

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
519799		sofapuden	Sails (IOI07_sails)	C++14	100 / 100	76 ms	7484 KiB

sails

#include<bits/stdc++.h>

using namespace std;
typedef long long ll;

int main(){
  ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
  int n; cin >> n;
  vector<pair<int,int>> v(n);
  for(auto &x : v)cin >> x.first >> x.second;
  set<pair<int,int>> S;
  S.insert({1,1});S.insert({1,2});
  int cn = 3;
  sort(v.begin(),v.end());
  for(int i = 0; i < n; ++i){
    int mx = (*S.rbegin()).first, am = min(v[i].first+1,mx+v[i].second)-mx;
    if(v[i].second == am){
      S.erase(prev(S.end()));
      S.insert({mx+am,cn++});
      continue;
    }
    S.insert({mx+am,cn++});
    auto it = S.lower_bound({v[i].first-v[i].second+1,0});
    if(it == S.begin())it = next(it);
    auto it2 = prev(it);
    S.insert({(*it2).first+v[i].second-(v[i].first-(*it).first+1),cn++});
    S.erase(it);
    S.erase(it2);
    S.insert({1,cn++}); // Just to be sure
  }
  vector<int> v2;
  for(auto x : S)v2.push_back(x.first);
  reverse(v2.begin(),v2.end());
  ll ans = 0;
  for(int i = 0; i < v2.size(); ++i){
    ans += 1ll * i * (v2[i]-1);
  }
  cout << ans << '\n';
}

컴파일 시 표준 에러 (stderr) 메시지

sails.cpp: In function 'int main()':
sails.cpp:35:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |   for(int i = 0; i < v2.size(); ++i){
      |                  ~~^~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 5 / 5
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10
• Subtask 11: 10 / 10