Submission #259803

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
259803	2020-08-08T15:27:15 Z	Hehehe	Boxes with souvenirs (IOI15_boxes)	C++14	Compilation error	0 ms	0 KB

boxes

#include<bits/stdc++.h> //:3
using namespace std;
typedef long long ll;
#define all(a) (a).begin(), (a).end()
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
#define pi pair<long double, long double>
#define sz(x) (int)((x).size())
//#define int long long
#include "boxes.h"

const int dx[] = {0, 1, 0, -1};
const int dy[] = {1, 0, -1, 0};

const ll inf = 2e9;
const ll mod = 1e9 + 7;
const int N = 2e6 + 11;
const ll INF64 = 3e18 + 1;
const double eps = 1e-14;
const double PI = acos(-1);

//ifstream in(".in");
//ofstream out(".out");

int n, a[N];

ll delivery(int n, int k, int L, vector<int> pos){

    ll dp1[n + 5], dp2[n + 5];

    vector<int>pos2;

    for(int i = 0; i < n; i++){
        pos2.push_back(pos[i]);
    }

    reverse(all(pos2));

    for(int i = 0; i < n; i++){
        dp1[i] = (i < k ? 2ll*pos[i] : dp1[i - k] + 2ll*pos[i]);
    }

    for(int i = n - 1; i >= 0; i--){
        dp2[i] = (i + k >= n ? 2ll*(L - pos[i]) : dp2[i + k] + 2ll*(L - pos[i]));
        //cout << i << ' ' << (L - pos[i]) << '\n';
    }

    ll ans = min(dp2[0], dp1[n - 1]);

    //cout << "pos" << '\n';
    //for(int i = 0; i < n; i++)cout << pos[i] << ' '; cout << '\n';
    //cout << "dp1" << '\n';
    //for(int i = 0; i < n; i++)cout << dp1[i] << ' '; cout << '\n';
    //cout << "dp2" << '\n';
    //for(int i = 0; i < n; i++)cout << dp2[i] << ' '; cout << '\n';

    for(int i = 0; i < n - 1; i++){
        ans = min(ans, dp1[i] + dp2[i + 1]);
    }

    for(int i = 0; i < n; i++){
        if(i + k + 1 >= n)continue;
        ans = min(ans, dp1[i] + L + dp2[i + k + 1]);
    }

    return ans;
}

Compilation message

boxes.cpp: In function 'll delivery(int, int, int, std::vector<int>)':
boxes.cpp:29:49: warning: declaration of 'n' shadows a global declaration [-Wshadow]
 ll delivery(int n, int k, int L, vector<int> pos){
                                                 ^
boxes.cpp:27:5: note: shadowed declaration is here
 int n, a[N];
     ^
/tmp/cciwaadm.o: In function `main':
grader.c:(.text.startup+0x22f): undefined reference to `delivery(int, int, int, int*)'
collect2: error: ld returned 1 exit status