#include<bits/stdc++.h>
#include<chrono>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
typedef long long ll;
typedef long double ld;
typedef string str;
typedef bool bl;
typedef vector<ll> vii;
typedef pair<ll,ll> pii;
typedef vector<pii> vpi;
#define ordered_set tree<pii,null_type,less<pii>,rb_tree_tag,tree_order_statistics_node_update>
#define fast ios_base::sync_with_stdio(0);cin.tie();
#define test ll qqqqq;cin>>qqqqq;while(qqqqq--)
#define test1 ll qqqqq=1;while(qqqqq--)
#define F first
#define S second
#define forn(i,n) for(int i=0;i<n;i++)
#define forx(i,j,n) for(int i=j;i<n;i++)
#define pb push_back
#define eb emplace_back
#define pob pop_back
#define all(v) v.begin(),v.end()
#define lb lower_bound
#define ub upper_bound
#define pow powww
#define prtll(x) printf("%lld",x)
#define prtld(x) printf("%Lf",x)
#define prtst(x) printf("%s",x)
#define prtch(x) printf("%c",x)
#define measure chrono::high_resolution_clock::now()
#define duration chrono::duration_cast<chrono::milliseconds>(end-start)
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
const ll dx[]{1,0,-1,0,1,-1,1,-1};
const ll dy[]{0,-1,0,1,1,-1,-1,1};
const ll inf=1e18;
const ll mod=1e9+7;
const ll LM=1e8+1;
const ll M=2e5+10;
const ll MM=4002;
const ll MMM=501;
const ld pi=acos(-1);
//const ll mod=998244353;
ll pow(ll r,ll to,ll m=mod){
ll res=1;
r%=m;
while(to){
if((to&1)){
res*=r,res%=m;
}
r*=r,r%=m;
to=(to>>1);
}
return res;
}
ll n,a[M],ma=1;
bl chk(ll lef,ll righ){
cout<<"? "<<lef<<' '<<righ<<endl;
bl c;
cin>>c;
return c;
}
int main(){
fast
//freopen("gen.txt","r",stdin);
auto start=measure;
test1{
cin>>n;
forn(i,n){
ll l=i-(ma+1)/2,r=i+(ma+1)/2;
while(l>=0&&r<n){
if(!chk(l+1,r+1))
break;
l--,r++;
}
ma=max(ma,r-l-1);
}
forn(i,n-1){
ll l=i-ma/2,r=i+ma/2+1;
while(l>=0&&r<n){
if(!chk(l+1,r+1))
break;
l--,r++;
}
ma=max(ma,r-l-1);
}
cout<<"! "<<ma<<endl;
}
auto end=measure;
auto dur=duration;
//cout<<fixed<<dur.count()<<'\n';
return 0;
}
/*
*/
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
122 ms |
320 KB |
Output is correct |
2 |
Correct |
124 ms |
208 KB |
Output is correct |
3 |
Correct |
112 ms |
208 KB |
Output is correct |
4 |
Correct |
133 ms |
208 KB |
Output is correct |
5 |
Correct |
138 ms |
208 KB |
Output is correct |
6 |
Correct |
107 ms |
208 KB |
Output is correct |
7 |
Correct |
70 ms |
208 KB |
Output is correct |
8 |
Correct |
85 ms |
208 KB |
Output is correct |
9 |
Correct |
87 ms |
208 KB |
Output is correct |
10 |
Correct |
151 ms |
208 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
122 ms |
320 KB |
Output is correct |
2 |
Correct |
124 ms |
208 KB |
Output is correct |
3 |
Correct |
112 ms |
208 KB |
Output is correct |
4 |
Correct |
133 ms |
208 KB |
Output is correct |
5 |
Correct |
138 ms |
208 KB |
Output is correct |
6 |
Correct |
107 ms |
208 KB |
Output is correct |
7 |
Correct |
70 ms |
208 KB |
Output is correct |
8 |
Correct |
85 ms |
208 KB |
Output is correct |
9 |
Correct |
87 ms |
208 KB |
Output is correct |
10 |
Correct |
151 ms |
208 KB |
Output is correct |
11 |
Correct |
973 ms |
208 KB |
Output is correct |
12 |
Correct |
1111 ms |
208 KB |
Output is correct |
13 |
Correct |
1054 ms |
208 KB |
Output is correct |
14 |
Correct |
847 ms |
208 KB |
Output is correct |
15 |
Correct |
916 ms |
208 KB |
Output is correct |
16 |
Correct |
640 ms |
208 KB |
Output is correct |
17 |
Correct |
440 ms |
208 KB |
Output is correct |
18 |
Correct |
1056 ms |
208 KB |
Output is correct |
19 |
Correct |
546 ms |
208 KB |
Output is correct |
20 |
Correct |
898 ms |
208 KB |
Output is correct |
21 |
Correct |
903 ms |
208 KB |
Output is correct |
22 |
Correct |
1024 ms |
208 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1810 ms |
208 KB |
Output is correct |
2 |
Correct |
357 ms |
208 KB |
Output is correct |
3 |
Correct |
1536 ms |
208 KB |
Output is correct |
4 |
Correct |
804 ms |
208 KB |
Output is correct |
5 |
Correct |
773 ms |
208 KB |
Output is correct |
6 |
Correct |
1645 ms |
256 KB |
Output is correct |
7 |
Correct |
721 ms |
208 KB |
Output is correct |
8 |
Correct |
1010 ms |
208 KB |
Output is correct |
9 |
Correct |
1690 ms |
208 KB |
Output is correct |
10 |
Correct |
1254 ms |
292 KB |
Output is correct |
11 |
Correct |
855 ms |
208 KB |
Output is correct |
12 |
Correct |
738 ms |
208 KB |
Output is correct |
13 |
Correct |
1170 ms |
208 KB |
Output is correct |
14 |
Correct |
1522 ms |
208 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
122 ms |
320 KB |
Output is correct |
2 |
Correct |
124 ms |
208 KB |
Output is correct |
3 |
Correct |
112 ms |
208 KB |
Output is correct |
4 |
Correct |
133 ms |
208 KB |
Output is correct |
5 |
Correct |
138 ms |
208 KB |
Output is correct |
6 |
Correct |
107 ms |
208 KB |
Output is correct |
7 |
Correct |
70 ms |
208 KB |
Output is correct |
8 |
Correct |
85 ms |
208 KB |
Output is correct |
9 |
Correct |
87 ms |
208 KB |
Output is correct |
10 |
Correct |
151 ms |
208 KB |
Output is correct |
11 |
Correct |
973 ms |
208 KB |
Output is correct |
12 |
Correct |
1111 ms |
208 KB |
Output is correct |
13 |
Correct |
1054 ms |
208 KB |
Output is correct |
14 |
Correct |
847 ms |
208 KB |
Output is correct |
15 |
Correct |
916 ms |
208 KB |
Output is correct |
16 |
Correct |
640 ms |
208 KB |
Output is correct |
17 |
Correct |
440 ms |
208 KB |
Output is correct |
18 |
Correct |
1056 ms |
208 KB |
Output is correct |
19 |
Correct |
546 ms |
208 KB |
Output is correct |
20 |
Correct |
898 ms |
208 KB |
Output is correct |
21 |
Correct |
903 ms |
208 KB |
Output is correct |
22 |
Correct |
1024 ms |
208 KB |
Output is correct |
23 |
Correct |
1810 ms |
208 KB |
Output is correct |
24 |
Correct |
357 ms |
208 KB |
Output is correct |
25 |
Correct |
1536 ms |
208 KB |
Output is correct |
26 |
Correct |
804 ms |
208 KB |
Output is correct |
27 |
Correct |
773 ms |
208 KB |
Output is correct |
28 |
Correct |
1645 ms |
256 KB |
Output is correct |
29 |
Correct |
721 ms |
208 KB |
Output is correct |
30 |
Correct |
1010 ms |
208 KB |
Output is correct |
31 |
Correct |
1690 ms |
208 KB |
Output is correct |
32 |
Correct |
1254 ms |
292 KB |
Output is correct |
33 |
Correct |
855 ms |
208 KB |
Output is correct |
34 |
Correct |
738 ms |
208 KB |
Output is correct |
35 |
Correct |
1170 ms |
208 KB |
Output is correct |
36 |
Correct |
1522 ms |
208 KB |
Output is correct |
37 |
Correct |
1047 ms |
208 KB |
Output is correct |
38 |
Correct |
1316 ms |
208 KB |
Output is correct |
39 |
Correct |
1453 ms |
208 KB |
Output is correct |
40 |
Correct |
1299 ms |
208 KB |
Output is correct |
41 |
Correct |
1744 ms |
208 KB |
Output is correct |
42 |
Correct |
1057 ms |
208 KB |
Output is correct |
43 |
Correct |
787 ms |
208 KB |
Output is correct |
44 |
Correct |
1651 ms |
208 KB |
Output is correct |
45 |
Correct |
556 ms |
208 KB |
Output is correct |
46 |
Correct |
1519 ms |
208 KB |
Output is correct |
47 |
Correct |
1518 ms |
320 KB |
Output is correct |
48 |
Correct |
1661 ms |
208 KB |
Output is correct |
49 |
Correct |
891 ms |
208 KB |
Output is correct |
50 |
Correct |
1079 ms |
320 KB |
Output is correct |
51 |
Correct |
1972 ms |
208 KB |
Output is correct |
52 |
Correct |
1794 ms |
208 KB |
Output is correct |