제출 #1286760

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1286760		SmuggingSpun	Bitaro's travel (JOI23_travel)	C++20	15 / 100	15 ms	1152 KiB

travel

#include<bits/stdc++.h>
#define taskname "C"
using namespace std; 
typedef long long ll;
const int lim = 2e5 + 5;
int n, q, a[lim];
namespace sub12{
	void solve(){
		int s, p;
		cin >> s;
		ll ans = 0;
		for(int r = upper_bound(a + 1, a + n + 1, s) - a, l = r - 1, _ = 0; _ < n; _++){
			if(l == 0 || (r != n + 1 && s - a[l] > a[r] - s)){
				ans += a[r] - s;
				s = a[r++];
			}			
			else{
				ans += s - a[l];
				s = a[l--];
			}
		}
		cout << ans;
	}
}
namespace sub34{
	void solve(){
		
	}
}
int main(){
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	if(fopen(taskname".inp", "r")){
		freopen(taskname".inp", "r", stdin);
	}
	cin >> n;
	for(int i = 1; i <= n; i++){
		cin >> a[i];
	}
	cin >> q;
	if(q == 1){
		sub12::solve();
	}
	else{
		sub34::solve();
	}
}

컴파일 시 표준 에러 (stderr) 메시지

travel.cpp: In function 'int main()':
travel.cpp:33:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |                 freopen(taskname".inp", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 0 / 30
• Subtask 4: 0 / 55