제출 #549381

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
549381		joshjms	선물상자 (IOI15_boxes)	C++14	컴파일 에러	0 ms	0 KiB

boxes

#include "boxes.h"

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define ld long double
#define pb push_back
#define fi first
#define se second
#define debug(x) cout << #x << " => " << x << "\n";

const int mod = 1e9 + 7;

int n, k, l, p[10000005], idx;
int le, ri;

ll dp[10000005][2];
ll ans;

ll delivery(int N, int K, int L, int P[]) {
    n = N, k = K, l = L;
    for(int i = 0; i < n; i++) {
        if(P[i]) p[++idx] = P[i];
    }
    n = idx;
    if(n == 0) return 0;
    le = 0, ri = 1;
    for(; ri <= n; ri++) {
        while(ri - le > k && le < ri) 
            le++;
    }
    reverse(p + 1, p + n + 1);
    le = 0, ri = 1;
    for(; ri <= n; ri++) {
        while(ri - le > k && le < ri)
            le++;
    }
    ans = min(dp[p[1]][0], dp[p[n]][1]);
    for(int i = 2; i <= n; i++) {
        assert(p[i] >= 0 && p[i] < l && p[i - 1] >= 0 && p[i - 1] < l);
        ans = min(ans, dp[p[i]][0] + dp[p[i - 1]][1]);
    }
    return ans;
}

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 c, x, s;
    c = _read();
    while (c <= 32) c = _read();
    x = 0;
    s = 1;
    if (c == '-') {
        s = -1;
        c = _read();
    }
    while (c > 32) {
        x *= 10;
        x += c - '0';
        c = _read();
    }
    if (s < 0) x = -x;
    return x;
}

int main() {
	_inputFile = stdin;
	_outputFile = stdout;

    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();
    }

    fprintf(_outputFile, "%lld\n", delivery(N, K, L, p));
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

boxes.cpp: In function 'int main()':
boxes.cpp:94:10: warning: declaration of 'p' shadows a global declaration [-Wshadow]
   94 |     int *p = (int*)malloc(sizeof(int) * (unsigned int)N);
      |          ^
boxes.cpp:15:14: note: shadowed declaration is here
   15 | int n, k, l, p[10000005], idx;
      |              ^
/usr/bin/ld: /tmp/ccmG53pX.o: in function `main':
grader.c:(.text.startup+0x0): multiple definition of `main'; /tmp/cct5rxUU.o:boxes.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status