제출 #976765

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
976765		Amaarsaa	선물상자 (IOI15_boxes)	C++14	20 / 100	1 ms	608 KiB

boxes

#include<bits/stdc++.h>
#include "boxes.h"
using namespace std;
using ll = long long ;

ll delivery(int N, int K, int L, int p[]) {
	ll ans, cnt_ard, cnt_urd, res;
	vector < ll > ard, urd;
	ll cnt = 0, i, j, r, s;
	for (i = 0; i < N; i ++) {
		if ( p[i] * 2 > L) {
			ard.push_back(p[i]);
		}
		else {
			if (p[i] * 2 < L) urd.push_back(p[i]);
			else cnt ++;
		}
	}
	ans = 0;
	reverse(ard.begin(), ard.end());
	for (i = urd.size() - 1; i >= K -1; i -= K) ans += (urd[i]);
	j = i ;
	for (i = ard.size() - 1; i >= K - 1; i -= K) ans += ( L - ard[i]);
	r = i ;
	ans *= 2;
//	cout << ans << endl;
	cnt_urd = j + 1;
	cnt_ard = r + 1;
//	cout << cnt_urd << " " << cnt_ard << endl;
	res = ((cnt_ard + cnt_urd + cnt + K - 1) / K) * L;
	if ( cnt_ard != 0) {
		res = min(res, (((L - ard[r]) * 2) + ((cnt_urd + cnt + K - 1)/K) * L) );
	}
	if ( cnt_urd != 0) {
		res = min(res, (((urd[j]) * 2) + ((cnt_ard + cnt + K - 1)/K) * L) );
	}
	if ( cnt_ard != 0 && cnt_urd != 0) {
		res = min(res, (((L - ard[r]) * 2) + (urd[j] * 2)+ ((cnt + K - 1)/K) * L) );
	}
	
	return res + ans;
	
}

컴파일 시 표준 에러 (stderr) 메시지

boxes.cpp: In function 'll delivery(int, int, int, int*)':
boxes.cpp:9:23: warning: unused variable 's' [-Wunused-variable]
    9 |  ll cnt = 0, i, j, r, s;
      |                       ^

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 0 / 15
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30