Submission #915661

#	Time	Username	Problem	Language	Result	Execution time	Memory
915661		winter0101	Airline Route Map (JOI18_airline)	C++14	100 / 100	590 ms	43804 KiB

Alice

#include<bits/stdc++.h>
#include "Alicelib.h"
using namespace std;
#define all(fl) fl.begin(),fl.end()
#define pb push_back
#define fi first
#define se second
#define for1(i,j,k) for(int i=j;i<=k;i++)
#define for2(i,j,k) for(int i=j;i>=k;i--)
#define for3(i,j,k,l) for(int i=j;i<=k;i+=l)
#define lb lower_bound
#define ub upper_bound
#define sz(a) (int)a.size()
#define pii pair<int,int>
#define pli pair<long long,int>
#define gcd __gcd
#define lcm(x,y) x*y/__gcd(x,y)
void Alice( int N, int M, int A[], int B[] ){
    vector<pii>t;
    for1(i,0,M-1)t.pb({A[i],B[i]});
    for1(i,0,N+10){
    if (i==N)continue;
    t.pb({N,i});
    }
    for1(i,N+1,N+10)t.pb({N+11,i});
    for1(i,N+2,N+10)t.pb({i,i-1});
    for1(i,1,N)for1(j,0,9)if (i>>j&1)t.pb({i-1,j+1+N});
    InitG(N+12,sz(t));
    for1(i,0,sz(t)-1)MakeG(i,t[i].fi,t[i].se);
}

Bob

#include<bits/stdc++.h>
#include "Boblib.h"
using namespace std;
#define all(fl) fl.begin(),fl.end()
#define pb push_back
#define fi first
#define se second
#define for1(i,j,k) for(int i=j;i<=k;i++)
#define for2(i,j,k) for(int i=j;i>=k;i--)
#define for3(i,j,k,l) for(int i=j;i<=k;i+=l)
#define lb lower_bound
#define ub upper_bound
#define sz(a) (int)a.size()
#define pii pair<int,int>
#define pli pair<long long,int>
#define gcd __gcd
#define lcm(x,y) x*y/__gcd(x,y)
const int maxn=2e3+9;
int deg[maxn],encode[maxn];
vector<int>a[maxn];
bool b[maxn][maxn],isbit[maxn],vis[maxn];
vector<int>ord;
void dfs(int u){
vis[u]=1,ord.pb(u);
for (auto v:a[u])if (isbit[v]&&!vis[v])dfs(v);
}
void Bob( int V, int U, int C[], int D[] ){
    for1(i,0,U-1){
    deg[C[i]]++,deg[D[i]]++,a[C[i]].pb(D[i]),a[D[i]].pb(C[i]),b[C[i]][D[i]]=b[D[i]][C[i]]=1;
    }
    int nw=0;
    for1(i,0,V-1)if (deg[i]>deg[nw])nw=i;
    int sec=0;
    for1(i,0,V-1){
    if (i==nw)continue;
    if (!b[nw][i])sec=i;
    }
    vector<int>bit;
    for (auto v:a[sec])isbit[v]=1,bit.pb(v);
    vector<int>bit09;
    for (auto v:bit){
    int cnt=0;
    for (auto u:a[v])cnt+=isbit[u];
    if (cnt==1)bit09.pb(v);
    }
    int u=bit09[0],v=bit09[1];
    if (sz(a[u])>sz(a[v]))bit09.pop_back();
    int bit0=bit09.back();
    dfs(bit0);
    for1(i,0,sz(ord)-1){
    for (auto v:a[ord[i]]){
    if (v==nw||v==sec)continue;
    encode[v]+=(1<<i);
    }
    }
    vector<pii>t;
    for1(i,0,U-1){
    if (C[i]==nw||C[i]==sec||isbit[C[i]]||D[i]==nw||D[i]==sec||isbit[D[i]])continue;
    t.pb({encode[C[i]]-1,encode[D[i]]-1});
    }
    InitMap(V-12,sz(t));
    for (auto v:t)MakeMap(v.fi,v.se);
}

• Subtask 1: 22 / 22
• Subtask 2: 15 / 15
• Subtask 3: 63 / 63