# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
1051978 | MrAndria | Colors (BOI20_colors) | C++14 | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
#define ff first;
#define ss second
#define pb push_back
//#define int long long
int k,l,r,n,ans;
bool b1;
int main(){
cin>>n;
cout<<"? "<<1<<endl;
cin>>b1;
l=2;
r=n;
k=2;
while(l<=r){
if(k%2==0){
cout<<"? "<<r<<endl;
cin>>b1;
if(b1==1){
ans=r-(l-1);
}else{
break;
}
r--;
}else{
cout<<"? "<<l<<endl;
cin>>b1;
if(b1==1){
ans=(r+1)-l;
}else{
break;
}
l++;
}
k++;
}
cout<<"= "<<ans<<endl;
}#include <bits/stdc++.h>
using namespace std;
#define ff first;
#define ss second
#define pb push_back
//#define int long long
int k,l,r,n,ans;
bool b1;
int main(){
cin>>n;
cout<<"? "<<1<<endl;
cin>>b1;
l=2;
r=n;
k=2;
while(l<=r){
if(k%2==0){
cout<<"? "<<r<<endl;
cin>>b1;
if(b1==1){
ans=r-(l-1);
}else{
break;
}
r--;
}else{
cout<<"? "<<l<<endl;
cin>>b1;
if(b1==1){
ans=(r+1)-l;
}else{
break;
}
l++;
}
k++;
}
cout<<"= "<<ans<<endl;
}