#include <bits/stdc++.h>
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define all(v) v.begin(), v.end()
 
using namespace std;
typedef long long LL;
const LL MOD = 1e9 + 7;
 
int main() {
	int A, B;
	cin >> A >> B;
	while (A <= B) {
		int mid = (A + B) / 2;
		cout << mid << endl;
		string s;
		cin >> s;
		if (s == "selamat") break;
		else {
			cin >> s;
			if (s == "besar") B = mid - 1;
			else A = mid + 1;
		}
	}
}

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