# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
858928 | ReLice | Colors (BOI20_colors) | C++14 | 0 ms | 344 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>
#define ll long long
#define str string
#define ins insert
#define ld long double
#define pb push_back
#define pf push_front
#define pof pop_front()
#define pob pop_back()
#define lb lower_bound
#define ub upper_bound
//#define endl "\n"
#define fr first
#define sc second
#define sz size()
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define bc back()
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ordered_set tree<ll, null_type,less_equal<ll>, rb_tree_tag,tree_order_statistics_node_update>
void fre(string s){freopen((s+".in").c_str(),"r",stdin);freopen((s+".out").c_str(),"w",stdout);}
void start(){
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
}
const ll inf=1e18+7;
const ll mod=1e9;
const ll N=3e5+7;;
const ld eps=1e-8;
void solve(){
ll i,j;
ll n;
ll b,c=0,sum=0;
cin>>n;
if(n==1){
cout<<"? "<<1<<endl;
cin>>b;
cout<<"= 1"<<endl;
return;
}
if(n<=64){
ll cur=1;
cout<<"? "<<cur<<endl;
cin>>b;
ll d=n-1;
for(i=1;i<n;i++){
if(cur+d>n){
cur-=d;
}else cur+=d;
cout<<"? "<<cur<<endl;
cin>>b;
if(b==1 && d==1){
cout<<"= 1"<<endl;
return;
}
if(b==0){
cout<<"= "<<d+1<<endl;
return;
}
d--;
}
}
cout<<"? "<<n/3<<endl;
c=2;
cin>>b;
ll cur=n/3;
ll l=0,r=n,d=n/2;
map<ll,ll> mp;
while(l+1<r){
if(cur+d<=n && mp[cur+d]==0){
cur+=d;
}else{
cur-=d;
}
cout<<"? "<<cur<<endl;
mp[cur]++;
cin>>b;
c*=2;
if(b==1){
r=d;
d-=n/c;
}else{
l=d;
d+=n/c;
}
}
cout<<"= "<<r<<endl;
}
signed main(){
start();
//freopen("input.txt","r",stdin);
//freopen("output.txt","w",stdout);
ll t=1;
//cin>>t;
while(t--) solve();
}
/*
*/
Compilation message (stderr)
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
Fetching results... |