Submission #931970

#	Time	Username	Problem	Language	Result	Execution time	Memory
931970		Art_ogo	Boxes with souvenirs (IOI15_boxes)	C++17	Compilation error	0 ms	0 KiB

boxes

#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <algorithm>
#include <utility>
#include <vector>
#include <iostream>
//#include "boxes.h"

#define ll long long
#define ve vector

using namespace std;

int dst(int x, int L){
    return min(x, L - x);
}

long long delivery(int N, int K, int L, int p[]) {
    ve<ll> dpl(N), dpr(N);
    int cnt = 1;
    for(int i = 0; i < N; i++){
        if(i - K >= 0)
            dpl[i] = p[i] - p[i - K] + dpl[i - K];
        else dpl[i] = p[i];
    }
    for(int i = N - 1; i >= 0; i--){
        if(i + K < N)
            dpr[i] = p[i + K] - p[i] + dpr[i + K];
        else dpr[i] = L - p[i];
    }
    ll res = min(dpl[N - 1] + dst(p[N - 1], L), dpr[0] + dst(p[0], L));
    for(int i = 0; i < N - 1; i++)
        res = min(res, dpl[i] + dst(p[i], L) + dpr[i + 1] + dst(p[i + 1], L));
    return res;
}


static char _buffer[1024];
static int _currentChar = 0;
static int _charsNumber = 0;
static FILE *_inputFile, *_outputFile;

static inline int _read() {
    if (_charsNumber < 0) {
        exit(1);
    }
    if (!_charsNumber || _currentChar == _charsNumber) {
        _charsNumber = (int)fread(_buffer, sizeof(_buffer[0]), sizeof(_buffer), _inputFile);
        _currentChar = 0;
    }
    if (_charsNumber <= 0) {
        return -1;
    }
    return _buffer[_currentChar++];
}

static inline int _readInt() {
    int x;
    std::cin >> x;
    return x;
}

int main() {
    _inputFile = fopen("boxes.in", "rb");
    _outputFile = fopen("boxes.out", "w");
    
    int N, K, L, i;
    N = _readInt();
    K = _readInt();
    L = _readInt();
    
    int *p = (int*)malloc(sizeof(int) * (unsigned int)N);
    
    for (i = 0; i < N; i++) {
        p[i] = _readInt();
    }
    cout << delivery(N, K, L, p);
    return 0;
}

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:22:9: warning: unused variable 'cnt' [-Wunused-variable]
   22 |     int cnt = 1;
      |         ^~~
/usr/bin/ld: /tmp/cc4cbLn1.o: in function `main':
grader.c:(.text.startup+0x0): multiple definition of `main'; /tmp/cc6SZav2.o:boxes.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status