제출 #163169

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
163169		kostia244	선물상자 (IOI15_boxes)	C++17	100 / 100	997 ms	372188 KiB

boxes

#include "boxes.h"
#include<bits/stdc++.h>
#define pb push_back
#define all(x) x.begin(), x.end()
using namespace std;
using ll = long long;
using vi = vector<ll>;
#define dist hbuisanawedjcsk
ll n, k, l, pos[10000011], dpl[10000011], dpr[10000011];
ll distl(ll a, ll b) {
	return min(abs(a-b), l-abs(a-b));
}
#define eval(dp, opt) (dp[opt] + dist(0, pos[opt+1]) + dist(pos[opt+1], pos[i])  + dist(pos[i], 0))
long long delivery(int N, int K, int L, int P[]) {
	n = N, k = K, l = L;
	for (int i = 0; i < n; i++)
		pos[i + 1] = P[i];
	ll opt = 0;
	for(int i = 1; i <= n; i++) {
		opt = max(0ll, i-k);
		dpl[i] = dpl[opt] + pos[i] + min(pos[i], (l-pos[i]));
	}
	opt=n+1;
	for(int i = n;i;i--) {
		opt = min(n+1ll, i+k);
		dpr[i] = dpr[opt] + (l-pos[i]) + min(pos[i], (l-pos[i]));
	}
	ll ans = LLONG_MAX;
	for(int i = 0; i <= n; i++) ans = min(ans, dpl[i]+dpr[i+1]);
	return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:24:14: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
  for(int i = n;i;i--) {
              ^

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