제출 #252018

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
252018	2020-07-23 17:05:45	yuma220284	이상한 기계 (APIO19_strange_device)	C++14	100 / 100	2329 ms	70364 KiB

strange_device

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#include "bits/stdc++.h"
using namespace std;
long long GCD(long long X, long long Y) {
  return (Y == 0 ? X : GCD(Y, X % Y));
}
int main() {
  int N;
  long long A, B;
  cin >> N >> A >> B;
  vector<pair<long long, long long> > P(N);
  for (int i = 0; i < N; i++) {
    cin >> P[i].first >> P[i].second;
  }
  long long C = A / GCD(B + 1, A);
  if (B > 2000000000000000000 / C) {
    long long ANS = 0;
    for (int i = 0; i < N; i++) {
      ANS += P[i].second - P[i].first + 1;
    }
    cout << ANS << endl;
  }
  else {
    long long D = B * C;
    for (int i = 0; i < N; i++) {
      if (P[i].first / D + 2 <= P[i].second / D) {
        cout << D << endl;
        return 0;
      }
 
 
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컴파일 시 표준 에러 (stderr) 메시지

strange_device.cpp: In function 'int main()':
strange_device.cpp:40:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < W.size(); i++) {
                   ~~^~~~~~~~~~

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