Piiri

input/code.cpp:6:1: error: 'll' does not name a type; did you mean 'all'?
    6 | ll n, m;
      | ^~
      | all
input/code.cpp:7:6: error: variable or field 'prll' declared void
    7 | void prll(ll mask) {
      |      ^~~~
input/code.cpp:7:11: error: 'll' was not declared in this scope; did you mean 'all'?
    7 | void prll(ll mask) {
      |           ^~
      |           all
input/code.cpp:12:1: error: 'll' does not name a type; did you mean 'all'?
   12 | ll ask(ll mask) {
      | ^~
      | all
input/code.cpp:26:1: error: 'uniform_ll_distribution' does not name a type
   26 | uniform_ll_distribution<ll> dist(0, 0);
      | ^~~~~~~~~~~~~~~~~~~~~~~
input/code.cpp:27:1: error: 'll' does not name a type; did you mean 'all'?
   27 | ll rand(ll l, ll r) {
      | ^~
      | all
input/code.cpp: In function 'void solve()':
input/code.cpp:33:16: error: 'n' was not declared in this scope; did you mean 'yn'?
   33 |         cin >> n >> m;
      |                ^
      |                yn...

#include <bits/stdc++.h> 
#define all(v) (v).begin(), (v).end()
using namespace std;
const int maxN = 2e5+10;

ll n, m;
void prll(ll mask) {
	for (ll i=0; i<n; i++) {
		cout << char((mask>>i&1)+'0');
	}
}
ll ask(ll mask) {
	cout << "? ";
	prll(mask);
	cout << endl;
	ll res = 0;
	for (ll i=0; i<m; i++) {
		char c;
		cin >> c;
		res += (c-'0')*(1<<i);
	}
	return res;
}
random_device rd;
mt19937 gen(rd());
uniform_ll_distribution<ll> dist(0, 0);
ll rand(ll l, ll r) {
	dist.param(uniform_ll_distribution<ll>::param_type{l, r});
	return dist(gen);
}

void solve() {
	cin >> n >> m;
	map<ll, ll> prev;
	if (n<=10) {
		for (ll mask=0; mask<1<<n; mask++) {
			ll res = ask(mask);
			if (prev.count(res)) {
				cout << "YES\n";
				prll(prev[res]);
				cout << '\n';
				prll(mask);
				cout << endl;
				return;
			}
			prev[res] = mask;
		}
	} else {
		for (ll i=0; i<3000; i++) {
			ll mask = rand(0, (1<<n)-1);
			ll res = ask(mask);
			if (prev.count(res)) {
				cout << "YES\n";
				prll(prev[res]);
				cout << '\n';
				prll(mask);
				cout << endl;
				return;
			}
			prev[res] = mask;
		}
	}
	cout << "NO\n";
	cout << endl;
}
int main() {
	solve();
}