#include<bits/stdc++.h>
#define int long long
using namespace std;
int n;
bool flag[1000005];
bool check(int k){
cout<<k<<endl;
string s;
cin>>s;
if(s=="Male")return 1;
if(s=="Female")return 0;
if(s=="Vacant")exit(0);
}
signed main(){
cin>>n;
int l=0,r=n-1;
flag[r]=check(r);
while(l<=r){
int mid=(l+r)>>1;
flag[mid]=check(mid);
if(((mid-l+1)&1)==(flag[mid]==flag[l])){
l=mid;
}
else r=mid;
}
}
--->
#include<bits/stdc++.h>
using namespace std;
int n;
bool flag[1000005];
bool check(int k){
cout<<k<<endl;
string s;
cin>>s;
if(s=="Male")return 1;
if(s=="Female")return 0;
if(s=="Vacant")exit(0);
}
signed main(){
cin>>n;
int l=0,r=n-1;
flag[r]=check(r);
while(l<=r){
int mid=(l+r)>>1;
flag[mid]=check(mid);
if(((r-mid+1)&1)==(flag[mid]==flag[r])){
r=mid;
}
else l=mid;
}
}
WA->AC