Submission #426133

#	Time	Username	Problem	Language	Result	Execution time	Memory
426133		hibye1217	Combo (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

/// combo.h ///
#include <string>

std::string guess_sequence(int N);

int press(std::string p);

/// grader.cpp ///
#include <cstdio>
#include <cstdlib>
#include <algorithm>
#include <string>
// #include "combo.h"

namespace {

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

int N;
std::string S;

int num_moves;

void wrong_answer(const char *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("wrong guess");
    exit(0);
  }
  printf("Accepted: %d\n", num_moves);
  return 0;
}

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

/// * combo.h ///

#ifndef NOTSUBMIT
#include "combo.h"
#include <bits/stdc++.h>
using namespace std;
#endif

string guess_sequence(int N) {
	string ans = "";
	char c1='A', c2='B', c3='X';
	if (press("AB") != 0){
		if (press("A") != 0){ ans += "A"; c1='Y'; }
		else{ ans += "B"; c2='Y'; }
	}
	else{
		if (press("X") != 0){ ans += "X"; c3='Y'; }
		else{ ans += "Y"; }
	}
	if (N == 1){ return ans; }
	for (int i = 2; i < N; i++){
		int res = press(ans+c1+c1 + ans+c1+c2 + ans+c1+c3 + ans+c2);
		if (res >= i+1){ ans += c1; }
		else if (res == i){ ans += c2; }
		else{ ans += c3; }
	}
	if (press(ans+c1) == N){ return ans+c1; }
	else if (press(ans+c2) == N){ return ans+c2; }
	else{ return ans+c3; }
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccDdDyCk.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/ccLQYp9k.o:combo.cpp:(.text+0x30): first defined here
/usr/bin/ld: /tmp/ccDdDyCk.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccLQYp9k.o:combo.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status