#include <bits/stdc++.h>
#include <bits/extc++.h>
using namespace __gnu_pbds;
using namespace std;
// #pragma GCC optimize("Ofast")
// #pragma GCC optimize ("unroll-loops")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#define ff first
#define sc second
#define pb push_back
#define ll long long
#define pll pair<ll, ll>
#define pii pair<int, int>
#define ull unsigned long long
#define all(x) (x).begin(),(x).end()
#define int long long
// #define int unsigned long long
// #define ordered_set(T) tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>
// #define ordered_multiset(T) tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update>
void open_file(string filename) {
freopen((filename + ".in").c_str(), "r", stdin);
freopen((filename + ".out").c_str(), "w", stdout);
}
// const ll mod = 1e9 + 7;
// const ll mod = 998244353;
const ll inf = 1e9;
const ll biginf = 1e18;
// const int maxN;
int query(string s);
string merge(string a, string b) {
int mx = query(b), i = 0;
for (int j = 0; j <= b.size() && i < a.size(); j++) {
string tmp = b; b.insert(b.begin() + j, a[i]);
int now = query(b);
if (now <= mx) b = tmp;
else { mx = now; ++i; }
} while (i < a.size()) b.pb(a[i++]);
return b;
}
string guess(int n, int s) {
deque<string> dq;
for (int i = 0; i < s; i++) {
string tmp = "";
for (int j = 0; j < n; j++)
tmp.pb(char('a' + i));
cnt[i] = query(tmp);
tmp.clear();
for (int j = 0; j < cnt[i]; j++)
tmp.pb(char('a' + i));
dq.push_back(tmp);
} while (dq.size() > 1) {
string a = dq.back(); dq.pop_back();
string b = dq.back(); dq.pop_back();
dq.push_front(merge(a, b));
} return dq.front();
}
Compilation message
password.cpp: In function 'std::string merge(std::string, std::string)':
password.cpp:41:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
41 | for (int j = 0; j <= b.size() && i < a.size(); j++) {
| ~~^~~~~~~~~~~
password.cpp:41:40: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
41 | for (int j = 0; j <= b.size() && i < a.size(); j++) {
| ~~^~~~~~~~~~
password.cpp:46:16: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
46 | } while (i < a.size()) b.pb(a[i++]);
| ~~^~~~~~~~~~
password.cpp: In function 'std::string guess(long long int, long long int)':
password.cpp:55:9: error: 'cnt' was not declared in this scope; did you mean 'int'?
55 | cnt[i] = query(tmp);
| ^~~
| int
password.cpp: In function 'void open_file(std::string)':
password.cpp:26:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
26 | freopen((filename + ".in").c_str(), "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
password.cpp:27:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
27 | freopen((filename + ".out").c_str(), "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
