/*input
*/
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
#define int long long
#define double long double
#define f first
#define s second
#define mp make_pair
#define pb push_back
#define RE(i,n) for (int i = 1; i <= n; i++)
#define REP(i,n) for (int i = 0; i < (int)n; i++)
#define all(v) v.begin(),v.end()
#define print(arr) for (auto it = arr.begin(); it != arr.end(); ++it) cout << *it << " "; cout << endl;
typedef tree<
int,
null_type,
less<int>,
rb_tree_tag,
tree_order_statistics_node_update>
ordered_set;
const int INF = 1e18+1;
const int MOD = 1e9+7;
const double PI = 3.14159265358979323846264338;
int raise(int a,int n,int m = MOD){
if(n == 0)return 1;
if(n == 1)return a;
int x = 1;
x *= raise(a,n/2,m);
x %= m;
x *= x;
x %= m;
if(n%2)x*= a;
x %= m;
return x;
}
int query(int a,int b){
cout << "? " << a << " " << b << endl;
int x;cin >> x;return x;
}
const int N = 1e5+1;
bool ans[N];
void solve(){
int n,q;cin >> n >> q;
int i = 1;
int j = 2;
stack<int> open;
open.push(1);
while(j <= n){
int u = open.top();
if(query(u,j)){
open.pop();
ans[j] = 1;
}
else{
open.push(j);
}
if(open.size()){
j++;
}
else{
open.push(j+1);
j += 2;
}
}
cout << "! ";
RE(i,n){
if(ans[i])cout << ')';
else cout << '(';
}
cout << endl;
}
signed main(){
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
//freopen(".in","r",stdin);freopen(".out","w",stdout);
int t = 1;
//cin >> t;
while(t--){
solve();
}
return 0;
}
Compilation message
zagrade.cpp: In function 'void solve()':
zagrade.cpp:58:8: warning: unused variable 'i' [-Wunused-variable]
58 | int i = 1;
| ^
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
5 ms |
364 KB |
Output is correct |
3 |
Correct |
11 ms |
364 KB |
Output is correct |
4 |
Correct |
10 ms |
364 KB |
Output is correct |
5 |
Correct |
9 ms |
364 KB |
Output is correct |
6 |
Correct |
16 ms |
364 KB |
Output is correct |
7 |
Correct |
9 ms |
364 KB |
Output is correct |
8 |
Correct |
8 ms |
364 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
1 ms |
364 KB |
Mismatch at position 1. Expected ), found ( |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
459 ms |
552 KB |
Output is correct |
3 |
Correct |
1004 ms |
476 KB |
Output is correct |
4 |
Correct |
1128 ms |
452 KB |
Output is correct |
5 |
Correct |
1048 ms |
492 KB |
Output is correct |
6 |
Correct |
1160 ms |
492 KB |
Output is correct |
7 |
Correct |
987 ms |
872 KB |
Output is correct |
8 |
Correct |
1083 ms |
492 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
1 ms |
364 KB |
Mismatch at position 1. Expected ), found ( |
2 |
Halted |
0 ms |
0 KB |
- |