Submission #774176

#	Time	Username	Problem	Language	Result	Execution time	Memory
774176		vjudge1	Zagrade (COI20_zagrade)	C++17	100 / 100	856 ms	1508 KiB

zagrade

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define OYY 10000000005
#define mod 1000000007
char dizi[100005];
vector <int> q;

int sor(int x,int y){
    cout<<"? "<<x<<" "<<y<<" ";
    cout<<'\n';
    int m;cin>>m;
    cout<<'\n';
    return m;
}

int32_t main(){
    int n,k;cin>>n>>k;
    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;
    //cout<<"ft"<<gec<<endl;
    for(int i=0;i<gec;i++){
        dizi[q[i]]=')';
    }
    cout<<"! ";
    for(int i=1;i<=n;i++)cout<<dizi[i]<<"";
    cout<<'\n';
}

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