Submission #305471

#	Time	Username	Problem	Language	Result	Execution time	Memory
305471		talant117408	콤보 (IOI18_combo)	C++17	0 / 100	2 ms	200 KiB

combo

#include "combo.h"
#include <bits/stdc++.h>

using namespace std;

//string guess_sequence(int n);

/*



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;
}*/

string guess_sequence(int n) {
	
	string s = "";
	
	vector <char> moves = {'A', 'B', 'X', 'Y'};
	char forbid = ' ';
	
	for(int i = 0; i < n; i++){
		for(auto to : moves){
			if(to == forbid) continue;
			
			string tmp = s+to;
			int coins = press(tmp);
			if(!i && coins){
				forbid = to;
			}
			if(coins == i+1){
				s += to;
				continue;
			}
		}
	}
	
	return s;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 95