제출 #931970

#제출 시각아이디문제언어결과실행 시간메모리
931970Art_ogo선물상자 (IOI15_boxes)C++17
컴파일 에러
0 ms0 KiB
#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; }

컴파일 시 표준 에러 (stderr) 메시지

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