| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 1206300 | adiat | Combo (IOI18_combo) | C++20 | 0 ms | 0 KiB |
#include<bits/stdc++.h>
//#include"combo.h"
using namespace std;
int press(string s);
string guess_sequence(int N)
{
string ans;
int k=0;
int q=press("AB");
if(q==1)
{
if(press("A")==1)
ans+='A';
else ans+='B';
}
else if(q==2)
{
ans+="AB";
k+=1;
}
else if(press("X")==1)
{
ans+="X";
}
else ans+="Y";
k+=1;
string s;
for(char i: {'A', 'B','X','Y'})
{
if(i!=ans[0])
s+=i;
}
// cout<<s<<endl;
while(k<N-1)
{
q=press(ans+s[0]+ans+s[1]+s[0]+ans+s[1]+s[1]+ans+s[1]+s[2]);
if(q==k+1)
ans+=s[0];
else if(q==k+2)
ans+=s[1];
else ans+=s[2];
k++;
}
q=press(ans+s[0]+ans+s[1]);
if(q==k+1)
{
if(press(ans+s[0])==k+1)
return ans+s[0];
else return ans+s[1];
}
else return ans+s[2];
}
#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);
cout<<answer<<endl;
if (answer != S) {
wrong_answer("wrong guess");
exit(0);
}
printf("Accepted: %d\n", num_moves);
return 0;
}