답안 #363598

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
363598	2021-02-06T16:43:57 Z	Sparky_09	선물상자 (IOI15_boxes)	C++17	컴파일 오류	0 ms	0 KB

boxes

#include "bits/stdc++.h"
using namespace std;
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define all(x) begin(x), end(x)
#define trav(a, x) for(auto& a : x)
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<ll, ll> pii;
typedef vector<ll> vi;
typedef vector<pii> vpi;

void usaco(string s){
  freopen((s+".in").c_str(), "r", stdin);
  freopen((s+".out").c_str(), "w", stdout);
}

ll maxn = 1e7+1000;
vector<ll> pre(maxn+2, 0), suf(maxn+2, 0), pos1(maxn+2);

int delivery(int n, int k, int l, int pos[]){
	for(int i = 0; i < n; i++) pos1[i] = pos[i];
	for(int i = 0; i < n; i++){
	  pre[i] = (i>=k?pre[i-k]+min(l,2*pos[i]):min(l,2*pos[i]));
	}
	for(int i = n-1; i >= 0; i--){
	  suf[i] = (i<=n-1-k?suf[i+k]+min(l,2*(l-pos[i])):min(l,2*(l-pos[i])));
	}
	ll ans = min(pre[0],suf[0]);
	for(int i = 0; i < n; i++){
	  ans = min(ans,  pre[i] + suf[i+1]);
	}
	return ans;
}



int main() {
	cin.tie(0)->sync_with_stdio(0);
	cin.exceptions(cin.failbit);
#ifdef LOCAL_DEFINE
	freopen("input.txt", "r", stdin);
#endif

}

Compilation message

boxes.cpp: In function 'int delivery(int, int, int, int*)':
boxes.cpp:32:9: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   32 |  return ans;
      |         ^~~
boxes.cpp: In function 'void usaco(std::string)':
boxes.cpp:13:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   13 |   freopen((s+".in").c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
boxes.cpp:14:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   14 |   freopen((s+".out").c_str(), "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/tmp/ccRnQB2n.o: In function `main':
grader.c:(.text.startup+0x0): multiple definition of `main'
/tmp/ccD4dbl7.o:boxes.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status