Submission #773931

#	Time	Username	Problem	Language	Result	Execution time	Memory
773931		vjudge1	Zagrade (COI20_zagrade)	C++17	0 / 100	0 ms	208 KiB

zagrade

//#include <bits/stdc++.h>
#include <iostream>
#include <vector>
using namespace std;
//#define int long long
#define faster ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);

int sor(int x,int y){
    cout<<"? "<<x<<" "<<y;
    cout.flush()<<endl;
    int m;cin>>m;
    return m;
}

signed main(){
    //faster
    int n,k;cin>>n>>k;
    vector <int> q;
    char dizi[n+1];
    dizi[1]='(';
    q.push_back(1);
    for(int i=2;i<=n;i++){
        if(q.size() && sor(q.back(),i)){
            dizi[i]=')';
            q.pop_back();
        }
        else{
            dizi[i]='(';
            q.push_back(i);
        }
    }
    int gec=q.size()/2;
    for(int i=0;i<=gec-1;i++){
        dizi[q[i]]=')';
    }//2-4 subtasks

    cout<<"!";
    for(int i=1;i<=n;i++)cout<<" "<<dizi[i];
    cout.flush()<<endl;
    //return 0;
}

• Subtask 1: 0 / 14
• Subtask 2: 0 / 7
• Subtask 3: 0 / 57
• Subtask 4: 0 / 22