Submission #1014025

#	Time	Username	Problem	Language	Result	Execution time	Memory
1014025		MarwenElarbi	선물상자 (IOI15_boxes)	C++17	10 / 100	1 ms	440 KiB

boxes

#include <bits/stdc++.h>
#include "boxes.h"
using namespace std;
#define pb push_back
#define ll long long
long long delivery(int N, int K, int L, int p[]) {
    vector<int> a;
    vector<int> b;
    int k=K;
    long long res=0;
    for (int i = 0; i < N; ++i)
    {
        if(p[i]==0) continue;
        if(p[i]<=L/2) a.pb(p[i]);
        else b.pb(L-p[i]);
    }
    if(b.size()) reverse(b.begin(),b.end());
    int cnt=0;
    for (int i = 0; i < a.size(); ++i)
    {
        cnt++;
        if(cnt==k){
            res+=a[i]*2;
            cnt=0;
        }
    }
    ll ans=1e18;
    if(cnt&&a.size()) res+=a[a.size()-1];
    if(cnt&&b.size()){
        ans=0;
        if(a.size()) ans+=L-a[a.size()-1];
        int cnt1=0;
        for (int i = 0; i < (int)b.size()-cnt; ++i)
        {
            cnt1++;
            if(cnt1==k){
                ans+=b[i]*2;
                cnt1=0;
            }
        }
        if(cnt1) ans+=b[b.size()-cnt-1]*2; 
    }
    ll cur=0;
    if(cnt&&a.size()) cur+=a[a.size()-1];
    cnt=0;
    for (int i = 0; i < b.size(); ++i)
    {
        cnt++;
        if(cnt==k){
            cur+=b[i]*2;
            cnt=0;
        }
    }
    if(cnt&&b.size()) cur+=b[b.size()-1]*2;
    long long res1=res+min(ans,cur);
    return min(1ll*L,res1);
}
/*
static char _buffer[1024];
static int _currentChar = 0;
static int _charsNumber = 0;
static FILE *_inputFile, *_outputFile;


int main() {
    #ifndef ONLINE_JUDGE
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
    #endif
    int N, K, L, i;
    cin>>N>>K>>L;
    int *p = (int*)malloc(sizeof(int) * (unsigned int)N);

    for (i = 0; i < N; i++) {
        cin>>p[i];
    }

    cout << delivery(N, K, L, p)<<endl;
    return 0;
}*/

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:19:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |     for (int i = 0; i < a.size(); ++i)
      |                     ~~^~~~~~~~~~
boxes.cpp:46:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |     for (int i = 0; i < b.size(); ++i)
      |                     ~~^~~~~~~~~~

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