| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 1152382 | dzuizz | Zagrade (COI20_zagrade) | C++20 | 0 ms | 408 KiB |
#include<bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
int n,q; cin>>n>>q;
string s="(";
stack<int> st; st.emplace(1);
for(int i=2;i<=n;++i){
if(st.size()){
cout<<"? "<<st.top()<<" "<<i<<endl;
int x; cin>>x;
if(x){
s+=")";
st.pop();
}else{
s+="(";
st.emplace(i);
}
}else{
s+="(";
st.emplace(i);
}
}
cout<<s<<'\n';
return 0;
}
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