제출 #238779

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
238779		lakshith_	선물상자 (IOI15_boxes)	C++14	20 / 100	5 ms	384 KiB

boxes

#include <bits/stdc++.h>
#define ll long long
#define f first
#define s second

using namespace std;

inline void io_setup(){
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
}

inline ll Min(ll a,ll b){ return a<b?a:b; }
inline ll Max(ll a,ll b){ return a>b?a:b; }

ll delivery(int n,int k,int L,int positions[]){
  ll ans;
  if(k==1){
    ans = 0;
    for(int i=0;i<n;i++){
      ans += 2*Min(positions[i],L-positions[i]);
    }
  }else if(k==n){
    pair<int,int> l,r;
    for(int i=0;i<n;i++){
      if(positions[i]<(L/2)){
        l.f = Min(positions[i],l.f);
        l.s = Max(positions[i],l.s);
      }else{
        r.f = Min(L-positions[i],r.f);
        r.s = Max(L-positions[i],r.s);
      }
    }
    ans = min(L,2*r.s+2*l.s);
  }
  return ans;
}

// int main(){
//   io_setup();
//   int arr[] = {5,98};
//   cout << delivery(2,2,100,arr);
// }

컴파일 시 표준 에러 (stderr) 메시지

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:28:18: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
         l.f = Min(positions[i],l.f);
               ~~~^~~~~~~~~~~~~~~~~~
boxes.cpp:29:18: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
         l.s = Max(positions[i],l.s);
               ~~~^~~~~~~~~~~~~~~~~~
boxes.cpp:31:18: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
         r.f = Min(L-positions[i],r.f);
               ~~~^~~~~~~~~~~~~~~~~~~~
boxes.cpp:32:18: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
         r.s = Max(L-positions[i],r.s);
               ~~~^~~~~~~~~~~~~~~~~~~~
boxes.cpp:37:10: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized]
   return ans;
          ^~~

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