Submission #988169

#	Time	Username	Problem	Language	Result	Execution time	Memory
988169		boyliguanhan	Airline Route Map (JOI18_airline)	C++17	100 / 100	633 ms	39992 KiB

Alice

#include "Alicelib.h"
#include <bits/stdc++.h>
using namespace std;
void Alice( int N, int M, int A[], int B[] ){
	vector<pair<int,int>>EEE;
	for(int i=0;i<M;i++)
		EEE.push_back({A[i],B[i]});
	EEE.push_back({N,N+1});
	for(int i=0;i<10;i++)
		EEE.push_back({N+1,N+i+2});
	for(int i=0;i<9;i++)
		EEE.push_back({N+2+i,N+3+i});
	EEE.push_back({N+8,N+11});
	EEE.push_back({N+8,N+10});
	EEE.push_back({N+7,N+9});
	int cnt=0;
	for(int i=3;cnt<N;i++){
		if(__builtin_popcount(i)>1){
			for(int j=0;j<10;j++) if(i&1<<j)
				EEE.push_back({cnt,N+2+j});
			cnt++;
		}
	}
	InitG(N+12,EEE.size());
	for(int i=0;i<EEE.size();i++)
		MakeG(i,EEE[i].first,EEE[i].second);
}

Bob

#include "Boblib.h"
#include <bits/stdc++.h>
using namespace std;
#define CTD(D,I) for(auto i:adj[z]) if(IN[i]&&i-w&&DEG[i]==D&&i!=v[I]){w=z,v.push_back(z=i);break;}
vector<int>adj[1012];
int means[1024],val[1012],DEG[1012],IN[1012];
void Bob( int V, int U, int C[], int D[] ){
	int CC=0;
	for(int i=3;i<1024;i++)
		if(__builtin_popcount(i)>1)
			means[i]=CC++;
	for(int i=0;i<U;i++)
		adj[C[i]].push_back(D[i]),
		adj[D[i]].push_back(C[i]);
	int x,y,z,w;
	for(int i=0;i<V;i++)
		if(adj[i].size()<2)
			x=i;
	y=adj[x][0];
	for(auto j:adj[y])
		IN[j]=1;
	for(int i=0;i<V;i++)
		for(auto j:adj[i])
			DEG[i]+=IN[j];
	for(auto i:adj[y])
		if(DEG[i]==1)
			z=i;
	vector<int>v{z};
	for(int Q=5;Q--;)for(auto i:adj[z])
		if(IN[i]&&i-w){w=z,v.push_back(z=i);break;}
	for(auto i:adj[z]) CTD(4,0)
	for(auto i:adj[z]) for(auto i:adj[z])
		if(IN[i]&&i-w&&DEG[i]==3&&count(adj[i].begin(),adj[i].end(),v[5])){
			w=z,v.push_back(z=i);break;}
	for(auto i:adj[z]) CTD(3,5)
	for(auto i:adj[z]) CTD(2,0)
	for(int i=0;i<10;i++)
		for(auto j:adj[v[i]])
			val[j]+=1<<i;
	vector<pair<int,int>>EEE;
	for(int i=0;i<U;i++) if(!IN[C[i]]&&!IN[D[i]]) {
		int A=means[val[C[i]]],B=means[val[D[i]]];
		EEE.push_back({A,B});
	}
	InitMap(V-12,EEE.size());
	for(auto[i,j]:EEE)
		MakeMap(i,j);
}

Compilation message (stderr)

Alice.cpp: In function 'void Alice(int, int, int*, int*)':
Alice.cpp:25:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |  for(int i=0;i<EEE.size();i++)
      |              ~^~~~~~~~~~~

Bob.cpp: In function 'void Bob(int, int, int*, int*)':
Bob.cpp:31:11: warning: unused variable 'i' [-Wunused-variable]
   31 |  for(auto i:adj[z]) CTD(4,0)
      |           ^
Bob.cpp:32:11: warning: unused variable 'i' [-Wunused-variable]
   32 |  for(auto i:adj[z]) for(auto i:adj[z])
      |           ^
Bob.cpp:35:11: warning: unused variable 'i' [-Wunused-variable]
   35 |  for(auto i:adj[z]) CTD(3,5)
      |           ^
Bob.cpp:36:11: warning: unused variable 'i' [-Wunused-variable]
   36 |  for(auto i:adj[z]) CTD(2,0)
      |           ^
Bob.cpp:30:11: warning: 'w' may be used uninitialized in this function [-Wmaybe-uninitialized]
   30 |   if(IN[i]&&i-w){w=z,v.push_back(z=i);break;}
      |      ~~~~~^~~~~

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