Submission #617079

#	Time	Username	Problem	Language	Result	Execution time	Memory
617079		beedle	Boxes with souvenirs (IOI15_boxes)	C++17	100 / 100	609 ms	372260 KiB

boxes

#include "boxes.h"
#include <iostream>
#include <iomanip>
#include <vector>
#include <algorithm>
#include <set>
#include <iterator>
#include <stack>
#include <map>
#include <math.h>
#include <bitset>
#include <deque>
#include <string>
#include <tuple>
#include <queue>
#include <numeric>
#include <unordered_set>
#include <unordered_map>
#include <random>
#include <chrono>
#define pi 3.141592653589793238
#define ll long long
#define ld long double
#define rep(i, a, b) for (long long i = a; i <= b; i++)
#define mod 1000000007ll
#define INF 1000000000000000000
#define pb push_back
#define ff first
#define ss second
#define endl '\n'
#define all(x) (x).begin (), (x).end ()
#define sz(x) (ll) (x).size ()
#define reunique(v) v.resize(std::unique(v.begin(), v.end()) - v.begin())
#define rank rnk
#define log lg
#define fast                                                                  \
    ios_base::sync_with_stdio (false);                                        \
    cin.tie (NULL);                                                           \
    cout.tie (NULL)
 
using namespace std;

long long delivery(int N, int K, int L, int P[]) {
    ll n=N, k=K, l=L, p[n];
    rep(i,0,n-1)
    p[i]=P[i];

    ll dp[n];
    ll rdp[n];
    for(int i=0;i<n;i++)
    {
        dp[i]=(i-k>=0?dp[i-k]:0)+min(l,2*p[i]);
    }   
    for(int i=n-1;i>=0;--i)
    {
        rdp[i]=(i+k<n?rdp[i+k]:0)+min(l,2*(l-p[i]));
    }

    ll ret=min(dp[n-1],rdp[0]);
    rep(i,0,n-2)
    ret=min(ret,dp[i]+rdp[i+1]);

    return ret;
}

// signed main()
// {
//     int n=3;
//     int k=2;
//     int l=8;
//     int p[]={1,2,5};
//     cout<<delivery(n,k,l,p);
// }

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:54:16: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   54 |     for(int i=n-1;i>=0;--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