Submission #571399

#	Time	Username	Problem	Language	Result	Execution time	Memory
571399		zaneyu	Chameleon's Love (JOI20_chameleon)	C++14	40 / 100	31 ms	23812 KiB

chameleon

#include "chameleon.h"
#include<bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
typedef tree<long long,null_type,less_equal<long long>,rb_tree_tag,tree_order_statistics_node_update> indexed_set;
#pragma GCC optimize("Ofast")
//#pragma GCC target("avx2")
//order_of_key #of elements less than x
// find_by_order kth element
using ll=long long;
using ld=long double;
using pii=pair<int,int>;
#define f first
#define s second
#define pb push_back
#define REP(i,n) for(int i=0;i<n;i++)
#define REP1(i,n) for(int i=1;i<=n;i++)
#define FILL(n,x) memset(n,x,sizeof(n))
#define ALL(_a) _a.begin(),_a.end()
#define sz(x) (int)x.size()
#define SORT_UNIQUE(c) (sort(c.begin(),c.end()),c.resize(distance(c.begin(),unique(c.begin(),c.end()))))
const ll maxn=5e5+5;
const ll maxlg=__lg(maxn)+2;
const ll INF64=4e18;
const int INF=0x3f3f3f3f;
const int MOD=1e9+7;
const ld PI=acos(-1);
const ld eps=1e-6;
#define lowb(x) x&(-x)
#define MNTO(x,y) x=min(x,(__typeof__(x))y)
#define MXTO(x,y) x=max(x,(__typeof__(x))y)
template<typename T1,typename T2>
ostream& operator<<(ostream& out,pair<T1,T2> P){
    out<<P.f<<' '<<P.s;
    return out;
}
template<typename T>
ostream& operator<<(ostream& out,vector<T> V){
    REP(i,sz(V)) out<<V[i]<<((i!=sz(V)-1)?" ":"");
    return out;
}
namespace {

int variable_example = 1;
set<int> vv[maxn];
map<pii,bool> tr;
int vis[maxn];
vector<int> cyc;
}  // namespace
void dfs(int u,int p,vector<int> &pth){
    vis[u]=1;
    pth.pb(u);
    for(int x:vv[u]){
        if(x==p) continue;
        if(!vis[x]){
            dfs(x,u,pth);
        }
        else if(vis[x]==1){
            cyc=pth;
        } 
    }
    pth.pop_back();
    vis[u]=2;
}
void Solve(int n) {
    if(n<=50){
        REP1(i,2*n){
            REP1(j,i-1){
                vector<int> v={i,j};
                if(Query(v)==1){
                    vector<int> vv;
                    REP1(k,2*n){
                        if(k==i or k==j) continue;
                        vv.pb(k);
                    }
                    if(Query(vv)<=n-1){
                        Answer(i,j);
                    } 
                }
            }
        }
    }
    else{
        for(int i=n+1;i<=2*n;i++){
            REP1(j,n){
                if(vis[j]) continue;
                vector<int> v={i,j};
                if(Query(v)==1){
                    vector<int> vv;
                    REP1(k,2*n){
                        if(k==i or k==j) continue;
                        vv.pb(k);
                    }
                    if(Query(vv)<=n-1){
                        vis[j]=1;
                        Answer(i,j);
                        break;
                    } 
                }
            }
        }
    }
}

Compilation message (stderr)

chameleon.cpp:46:5: warning: '{anonymous}::variable_example' defined but not used [-Wunused-variable]
   46 | int variable_example = 1;
      |     ^~~~~~~~~~~~~~~~

• Subtask 1: 0 / 4
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 36