# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
736971 | almothana05 | Combo (IOI18_combo) | C++14 | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#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;
}
#include "combo.h"
#include "bits/stdc++.h"
using namespace std;
string guess_sequence(int menge) {
string s , t = "" , cmp = "";
int x = press("AB");
if(x == 0){
x = press("X");
if(x == 0){
s += 'Y';
t = "ABX";
}
else{
s += 'X';
t = "ABY";
}
}
else{
x = press("A");
if(x == 0){
s += 'B';
t = "AYX";
}
else{
s += 'A';
t = "YBX";
}
}
if(menge == 1){
return s;
}
for(int i = 1 ; i < menge - 1 ; i++){
cmp += s;
cmp += t[0];
cmp += s;
cmp += t[1];
cmp += t[0];
cmp += s;
cmp += t[1];
cmp += t[1];
cmp += s;
cmp += t[1];
cmp += t[2];
x = press(cmp);
if(x == s.size()){
s += t[2];
}
else if(x == s.size() + 1){
s += t[0];
}
else{
s += t[1];
}
cmp = "";
}
cmp += s;
cmp += t[0];
cmp += s;
cmp += t[1];
x = press(cmp);
if(x == s.size()){
s += t[2];
}
else{
cmp = s;
cmp += t[0];
x = press(cmp);
if(x == s.size()){
s += t[1];
}
else{
s += t[0];
}
}
return s;
}
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;
}