Submission #1003896

#TimeUsernameProblemLanguageResultExecution timeMemory
1003896vjudge1Zagrade (COI20_zagrade)C++17
0 / 100
0 ms344 KiB
#include <bits/stdc++.h> using namespace std; int marc[100005]; stack<int> st; int main(){ int n,q; cin>>n>>q; st.push(1); marc[1] = 1; for(int i = 2; i <= n; i++){ cout<<"? "<<st.top()<<" "<<i<<endl; int x; cin>>x; if(x == 0){ marc[i] = 1; st.push(i); }else{ marc[i] = 0; st.pop(); } } cout<<"! "; for(int i = 1; i <= n; i++){ if(marc[i] == 0)cout<<")"; else cout<<"("; }cout<<endl; return 0; }
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