제출 #781703

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
781703		makanhulia	이상한 기계 (APIO19_strange_device)	C++17	10 / 100	1096 ms	16992 KiB

strange_device

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;

vector<pll> vec;
// {Left, Right}
ll n, a, b, length, ans = 0;

void opr(ll l, ll r) {
  ll pushl = l;
  ll pushr = r;

  if (pushl == 0) {
    // pushl = length;
  }

  if (pushr == 0) {
    // pushr = length;
  }

  vec.push_back({pushl, pushr});
}

void answer() {
  sort(vec.begin(), vec.end());

  ll idx = -1;
  for (int i = 0; i < vec.size(); ++i)
  {
    // cout << vec[i].first << " " << vec[i].second << "\n";
    pll now = vec[i];

    if (idx >= now.first)
    {
      if (now.second <= idx)
      {
        continue ;
      } else {
        idx++;
        ans += now.second - idx + 1;
        idx = now.second;
      }
    } else {
      idx = now.first;
      ans += now.second - idx + 1;
      idx = now.second;
    }
  }

  cout << ans << "\n";
}

int main(){
  cin >> n >> a >> b;
  if (a == 1) {
    length = b;
  } else {
    if (a % 2)
    {
      length = a * b;
    } else {
      length = (a/2) * b;
    }
  }

  if (length <= 0 || length > LLONG_MAX)
  {
    length = 1e18;
  }

  for (int i = 0; i < n; ++i)
  {
    ll nowl, nowr;
    cin >> nowl >> nowr;

    if (nowr-nowl+1 >= length)
    {
      cout << length << "\n";
      return 0;
    }

    if (nowl/length != nowr/length) {
      opr(nowl % length, length-1);
      opr(0, nowr % length);
    } else {
      opr(nowl % length, nowr % length);
    }
  }

  answer();
  return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

strange_device.cpp: In function 'void answer()':
strange_device.cpp:29:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |   for (int i = 0; i < vec.size(); ++i)
      |                   ~~^~~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 5
• Subtask 3: 5 / 5
• Subtask 4: 5 / 5
• Subtask 5: 0 / 5
• Subtask 6: 0 / 20
• Subtask 7: 0 / 20
• Subtask 8: 0 / 30