제출 #1270429

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1270429		SmuggingSpun	Cipele (COCI18_cipele)	C++20	90 / 90	32 ms	1096 KiB

cipele

#include<bits/stdc++.h>
#define taskname "C"
using namespace std;
int main(){
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	if(fopen(taskname".inp", "r")){
		freopen(taskname".inp", "r", stdin);
	}
	int n, m;
	cin >> n >> m;
	vector<int>l(n), r(m);
	for(int& x : l){
		cin >> x;
	}
	for(int& x : r){
		cin >> x;
	}
	if(n > m){
		swap(n, m);
		swap(l, r);
	}
	sort(l.begin(), l.end());
	sort(r.begin(), r.end());
	int low = 0, high = 1e9, ans;
	while(low <= high){
		int mid = (low + high) >> 1;
		bool f = true;
		for(int i = 0, j = 0; i < n; i++){
			while(j < m && l[i] - r[j] > mid){
				j++;
			}
			if(j == m || l[i] - r[j] < -mid){
				f = false;
				break;
			}
			j++;
		}
		if(f){
			high = (ans = mid) - 1;
		}
		else{
			low = mid + 1;
		}
	}
	cout << ans;
}

컴파일 시 표준 에러 (stderr) 메시지

cipele.cpp: In function 'int main()':
cipele.cpp:7:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 |                 freopen(taskname".inp", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

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