Submission #933935

#	Time	Username	Problem	Language	Result	Execution time	Memory
933935		alexander707070	Airline Route Map (JOI18_airline)	C++14	100 / 100	585 ms	54064 KiB

Alice

#include<bits/stdc++.h>
#include "Alicelib.h"
#define MAXN 200007

using namespace std;

namespace{
	int n,m,num;
	vector< pair<int,int> > edges;
}

void Alice( int N, int M, int A[], int B[]){

	n=N; m=M;
	num=17;

	for(int i=0;i<n;i++){
		for(int f=10;f>=0;f--){
			if(((1<<f)&(i+num))>0)edges.push_back({i,n+f});
		}
	}

	for(int i=n;i<=n+10;i++){
		edges.push_back({i,n+11});
		if(i<n+10)edges.push_back({i,i+1});
	}

	for(int i=0;i<m;i++){
		edges.push_back({A[i],B[i]});
	}

	InitG( n+12, edges.size() );
	for(int i=0;i<edges.size();i++){
		MakeG(i,edges[i].first,edges[i].second);
	}
}

Bob

#include <bits/stdc++.h>
#include "Boblib.h"
#define MAXN 200007

using namespace std;

namespace{
	int v,u,e,cnt,root,curr;
	vector<int> g[MAXN],w,line[MAXN];
	int sp[MAXN],tim;
	vector<int> path;
	vector< pair<int,int> > ed;
	int used2[MAXN],tim2,pos[MAXN],to[MAXN];
	bool dali,yoy;

	void dfs(int x,int p){
		path.push_back(x);

		for(int i=0;i<line[x].size();i++){
			if(line[x][i]==p)continue;
			dfs(line[x][i],x);
		}
	}

	bool ok(int x){
		w.clear(); tim++; e=0;

		for(int i=0;i<g[x].size();i++){
			w.push_back(g[x][i]);
			sp[w.back()]=tim;

			line[w.back()].clear();
		}

		for(int i=0;i<w.size();i++){
			for(int f:g[w[i]]){
				if(sp[f]==tim and f>w[i]){
					e++;

					line[w[i]].push_back(f);
					line[f].push_back(w[i]);
				}
			}
		}

		if(e!=w.size()-1)return false;
		
		cnt=0;
		for(int i=0;i<w.size();i++){
			if(int(line[w[i]].size())!=1 and int(line[w[i]].size())!=2)return false;
			if(int(line[w[i]].size())==1){
				cnt++; root=w[i];
			}
		}

		if(cnt!=2)return false;
		path.clear(); dfs(root,-1);

		for(int i=0;i<path.size();i++){
			pos[path[i]]=i;
		}

		tim2++; dali=true;
		for(int f=0;f<v;f++){
			if(f==x or sp[f]==tim)continue;

			curr=0;
			for(int k:g[f]){
				if(sp[k]!=tim)continue;
				curr+=(1<<pos[k]);
			}
			to[f]=curr;

			if(used2[curr]==tim2 or curr<17 or curr>=v-12+17){dali=false;break;}
			used2[curr]=tim2;
		}

		if(dali)return true;

		reverse(path.begin(),path.end());

		for(int i=0;i<path.size();i++){
			pos[path[i]]=i;
		}

		tim2++; dali=true;
		for(int f=0;f<v;f++){
			if(f==x or sp[f]==tim)continue;

			curr=0;
			for(int k:g[f]){
				if(sp[k]!=tim)continue;
				curr+=(1<<pos[k]);
			}
			to[f]=curr;

			if(used2[curr]==tim2 or curr<17 or curr>=v-12+17){dali=false;break;}
			used2[curr]=tim2;
		}

		if(dali)return true;

		yoy=true;

		return false;
	}
}

void Bob( int V, int U, int C[], int D[] ){

	v=V; u=U;
	for(int i=0;i<u;i++){
		g[C[i]].push_back(D[i]);
		g[D[i]].push_back(C[i]);
	}

	for(int i=0;i<v;i++){
		if(g[i].size()==11 and ok(i)){
			e=0; ed.clear();

			for(int f=0;f<u;f++){
				if(sp[C[f]]==tim or sp[D[f]]==tim)continue;
				ed.push_back({to[C[f]]-17,to[D[f]]-17});
				e++;
			}
			InitMap(V-12,e);

			for(int f=0;f<ed.size();f++){
				MakeMap(ed[f].first,ed[f].second);
			}

			return;
		}
	}

	if(yoy)cout<<1/0;
}

Compilation message (stderr)

Alice.cpp: In function 'void Alice(int, int, int*, int*)':
Alice.cpp:33:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |  for(int i=0;i<edges.size();i++){
      |              ~^~~~~~~~~~~~~

Bob.cpp: In function 'void {anonymous}::dfs(int, int)':
Bob.cpp:19:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |   for(int i=0;i<line[x].size();i++){
      |               ~^~~~~~~~~~~~~~~
Bob.cpp: In function 'bool {anonymous}::ok(int)':
Bob.cpp:28:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |   for(int i=0;i<g[x].size();i++){
      |               ~^~~~~~~~~~~~
Bob.cpp:35:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |   for(int i=0;i<w.size();i++){
      |               ~^~~~~~~~~
Bob.cpp:46:7: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |   if(e!=w.size()-1)return false;
      |      ~^~~~~~~~~~~~
Bob.cpp:49:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |   for(int i=0;i<w.size();i++){
      |               ~^~~~~~~~~
Bob.cpp:59:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |   for(int i=0;i<path.size();i++){
      |               ~^~~~~~~~~~~~
Bob.cpp:82:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   82 |   for(int i=0;i<path.size();i++){
      |               ~^~~~~~~~~~~~
Bob.cpp: In function 'void Bob(int, int, int*, int*)':
Bob.cpp:128:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  128 |    for(int f=0;f<ed.size();f++){
      |                ~^~~~~~~~~~
Bob.cpp:136:16: warning: division by zero [-Wdiv-by-zero]
  136 |  if(yoy)cout<<1/0;
      |               ~^~

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