제출 #1369772

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1369772		c12	콤보 (IOI18_combo)	C++20	컴파일 에러	0 ms	0 KiB

combo

#include <bits/stdc++.h>

using namespace std;

int press(std::string p);

std::string guess_sequence(int N) {
  std::string p = "";
  vector<string>ch({"A","B","X","Y"});
  
  if(press("AB") > 0){
    if(press("A") == 1) { p = "A"; ch.erase(ch.begin()); }
    else { p = "B"; ch.erase(ch.begin()+1); }
  }
  else{
    if(press("X") == 1) { p = "X"; ch.erase(ch.begin()+2); }
    else { p = "Y"; ch.erase(ch.begin()+3); }
  }
  for (int i = 2;i < N; ++i) {
    int t = press(p + ch[0] + ch[0] + p + ch[0] + ch[1] + p + ch[0] + ch[2] + p + ch[1]) - i + 1;
    if(t == 0) p += ch[2];
    if(t == 1) p += ch[1];
    if(t == 2) p += ch[0];
  }
  if(N > 1){
    if(press(p + ch[0] + p + ch[1]) == N){
        if(press(p + ch[0]) == N) p += ch[0];
        else p += ch[1];
    }
    else{
        p += ch[2];
    }
  }
    return p;
}

namespace {

constexpr int MAX_N = 2000;
constexpr int MAX_NUM_MOVES = 8000;

int N;
std::string S;

int num_moves;

void wrong_answer(string MSG) {
  printf("Wrong Answer: %s\n", MSG);
  exit(0);
}

}  // namespace

int press(std::string p) {
  if (++num_moves > MAX_NUM_MOVES) {
    wrong_answer("too many moves");
  }
  int len = p.length();
  if (len > 4 * N) {
    wrong_answer("invalid press");
  }
  for (int i = 0; i < len; ++i) {
    if (p[i] != 'A' && p[i] != 'B' && p[i] != 'X' && p[i] != 'Y') {
      wrong_answer("invalid press");
    }
  }
  int coins = 0;
  for (int i = 0, j = 0; i < len; ++i) {
    if (j < N && S[j] == p[i]) {
      ++j;
    } else if (S[0] == p[i]) {
      j = 1;
    } else {
      j = 0;
    }
    coins = std::max(coins, j);
  }
  return coins;
}

int main() {
  char buffer[MAX_N + 1];
  if (scanf("%s", buffer) != 1) {
    fprintf(stderr, "Error while reading input\n");
    exit(1);
  }
  S = buffer;
  N = S.length();

  num_moves = 0;
  std::string answer = guess_sequence(N);
  if (answer != S) {
    wrong_answer(answer);
    exit(0);
  }
  printf("Accepted: %d\n", num_moves);
  return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

combo.cpp: In function 'void {anonymous}::wrong_answer(std::string)':
combo.cpp:48:26: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'std::string' {aka 'std::__cxx11::basic_string<char>'} [-Wformat=]
   48 |   printf("Wrong Answer: %s\n", MSG);
      |                         ~^
      |                          |
      |                          char*
/usr/bin/ld: /tmp/ccV8xmfW.o: in function `press(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)':
grader.cpp:(.text+0x0): multiple definition of `press(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)'; /tmp/ccxDEEpU.o:combo.cpp:(.text+0x260): first defined here
/usr/bin/ld: /tmp/ccV8xmfW.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccxDEEpU.o:combo.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status