Submission #989329

#	Time	Username	Problem	Language	Result	Execution time	Memory
989329		normankr07	Boxes with souvenirs (IOI15_boxes)	C++17	Compilation error	0 ms	0 KiB

boxes

#define taskname ""
#include "boxes.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;

#ifndef LOCAL
#define cerr \
    if (0)   \
    cerr
#endif

const bool multitest = 0;

const int MAXN = 1e7 + 5;
int pos[MAXN];

long long delivery(int N, int K, int L, int p[])
{
    vector<ll> lt(N + 3), rt(N + 3);
    for (int i = 1; i <= N; i++)
    {
        if (i - K >= 0)
        {
            lt[i] = lt[i - K] + p[i - 1] * 2;
            rt[i] = rt[i - K] + ((L - p[N - i]) * 2);
        }
        else
        {
            lt[i] = p[i - 1] * 2;
            rt[i] = ((L - p[N - i]) * 2);
        }
    }

    // for (int i = 1; i <= N; i++)
    //     cout << lt[i] << ' ';
    // cout << endl;
    // for (int i = 1; i <= N; i++)
    //     cout << rt[i] << ' ';
    // cout << endl;

    ll ans = 1e18;
    for (int i = 0; i <= N; i++)
    {
        ans = min(ans, lt[i] + rt[N - i]);
    }
    for (int i = K - 1; i < N; i++)
    {
        ans = min(ans, lt[i - K + 1] + rt[N - i - 1] + L);
    }
    return ans;
}

void solve()
{
    int n, k, l;
    cin >> n >> k >> l;
    for (int i = 0; i < n; i++)
    {
        cin >> pos[i];
    }
    cout << delivery(n, k, l, pos);
}

int32_t main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    if (fopen(taskname ".inp", "r"))
    {
        freopen(taskname ".inp", "r", stdin);
        freopen(taskname ".out", "w", stdout);
    }
    int tc = 1;
    if (multitest)
        cin >> tc;
    while (tc--)
    {
        solve();
        cout << '\n';
    }
}

Compilation message (stderr)

boxes.cpp: In function 'int32_t main()':
boxes.cpp:71:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   71 |         freopen(taskname ".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
boxes.cpp:72:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   72 |         freopen(taskname ".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccGMPjxX.o: in function `main':
grader.c:(.text.startup+0x0): multiple definition of `main'; /tmp/cceA9bEY.o:boxes.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status