Submission #937449

#	Time	Username	Problem	Language	Result	Execution time	Memory
937449		guagua0407	Chameleon's Love (JOI20_chameleon)	C++17	0 / 100	15 ms	500 KiB

chameleon

#include "chameleon.h"
#include<bits/stdc++.h>

namespace {

int n;

}  // namespace

void Solve(int N) {
    using namespace std;
    n=N;
    int B=31;
    vector<bool> used(2*n+1);
    int cnt=0;
    while(cnt<n){
        vector<int> vec;
        for(int i=1;i<=2*n;i++){
            if(used[i]) continue;
            int sz=vec.size();
            vec.push_back(i);
            if(Query(vec)==sz){
                vec.pop_back();
                for(auto v:vec){
                    if(Query({v,i})==1){
                        //cout<<v<<' '<<i<<'\n';
                        Answer(v,i);
                        used[v]=used[i]=true;
                        cnt++;
                        break;
                    }
                }
            }
            //else if((int)vec.size()>B) vec.pop_back();
        }
    }
}

Compilation message (stderr)

chameleon.cpp: In function 'void Solve(int)':
chameleon.cpp:13:9: warning: unused variable 'B' [-Wunused-variable]
   13 |     int B=31;
      |         ^

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