# | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
---|---|---|---|---|---|---|---|
1162618 | cnn008 | Password (RMI18_password) | C11 | 0 ms | 0 KiB |
#include <bits/stdc++.h>
using namespace std;
int query(string p);
string guess(int n, int s) {
string ans;
vector<int> cnt(s, 0);
for (int i = 0; i < s; i++) {
char c = char('a' + i);
string cur;
while ((int)cur.size() < n) {
cur.push_back(c);
if (query(cur) != (int)cur.size()) {
cur.pop_back();
break;
}
}
cnt[i] = (int)cur.size();
}
int st = -1;
for (int i = 0; i < s; i++) {
if (cnt[i]) {
char c = char(i + 'a');
for (int j = 0; j < cnt[i]; j++) ans.push_back(c);
st = i;
break;
}
}
// Convert the lambda function to a normal function
struct Checker {
int (*query)(string);
string ans;
bool check(char c, int l) {
string t;
t.push_back(c);
for (int i = 0; i < (int)ans.size() - 1 - l + 1; i++)
if (ans[i] == c) t.push_back(c);
for (int i = (int)ans.size() - 1 - l + 1; i < (int)ans.size(); i++)
t.push_back(ans[i]);
return (query(t) == (int)t.size());
}
} ck = {query, ans}; // Assign function pointer
for (int i = st + 1; i < s; i++) {
for (int j = 0; j < cnt[i]; j++) {
char c = char('a' + i);
int l = 1, r = (int)ans.size(), cc = 0;
while (l <= r) {
int mid = (l + r) >> 1;
if (ck.check(c, mid)) {
cc = mid;
l = mid + 1;
} else {
r = mid - 1;
}
}
string _ans;
for (int i = (int)ans.size() - 1; i >= (int)ans.size() - 1 - cc + 1; i--)
_ans.push_back(ans[i]);
_ans.push_back(c);
for (int i = (int)ans.size() - 1 - cc + 1 - 1; i >= 0; i--)
_ans.push_back(ans[i]);
reverse(_ans.begin(), _ans.end());
ans.swap(_ans);
}
}
assert((int)ans.size() == n);
return ans;
}