Submission #917588

#TimeUsernameProblemLanguageResultExecution timeMemory
917588alexddAirline Route Map (JOI18_airline)C++17
100 / 100
735 ms41216 KiB
#include "Alicelib.h"
#include<bits/stdc++.h>
using namespace std;
void Alice(int N, int M, int A[], int B[])
{
    int cnte=M;
    for(int i=0;i<N;i++)
        for(int b=0;b<10;b++)
            if((i&(1<<b)))
                cnte++;
    for(int i=0;i<N+10;i++)
        cnte++;
    for(int i=0;i<10;i++)
        cnte++;
    for(int i=0;i<9;i++)
        cnte++;

    InitG(N+12, cnte);

    int cv=0;

    for(int i=0;i<M;i++)
        MakeG(cv++,A[i],B[i]);
    for(int i=0;i<N;i++)
        for(int b=0;b<10;b++)
            if((i&(1<<b)))
                MakeG(cv++,i,N+b);
    for(int i=0;i<N+10;i++)
        MakeG(cv++,N+10,i);
    for(int i=0;i<10;i++)
        MakeG(cv++,N+11,N+i);
    for(int i=0;i<9;i++)
        MakeG(cv++,N+i,N+i+1);
}

#include "Boblib.h"
#include<bits/stdc++.h>
using namespace std;
vector<int> con[1100];
map<pair<int,int>,int> mp;
int p,q;
int sum[1100];
int b[12];
void Bob(int V, int U, int C[], int D[])
{
    for(int i=0;i<U;i++)
    {
        con[C[i]].push_back(D[i]);
        con[D[i]].push_back(C[i]);
    }
    for(int i=0;i<V;i++)
    {
        if((int)con[i].size() == V-2)
        {
            for(auto x:con[i])
            {
                mp[{i,x}]++;
                mp[{x,i}]++;
            }
            p=i;
            for(int j=0;j<V;j++)
                if(j!=i && mp[{i,j}]==0)
                    q=j;
            break;
        }
    }
    for(auto x:con[q])
    {
        for(auto y:con[x])
        {
            mp[{x,y}]++;
            mp[{y,x}]++;
        }
    }
    b[0]=-1;
    for(auto x:con[q])
    {
        int aux=0;
        for(auto y:con[q])
            if(mp[{x,y}])
                aux++;
        if(aux==1 && b[0]==-1)
            b[0]=x;
        else if(aux==1)
            b[9]=x;
    }
    if((int)con[b[0]].size() < (int)con[b[9]].size())
        swap(b[0],b[9]);
    for(int i=1;i<9;i++)
    {
        for(auto x:con[q])
        {
            if((i==1 || x!=b[i-2]) && mp[{x,b[i-1]}])
            {
                b[i]=x;
                break;
            }
        }
    }
    for(int i=0;i<10;i++)
        for(auto x:con[b[i]])
            sum[x] += (1<<i);
    vector<pair<int,int>> rez;
    for(int i=0;i<V;i++)
    {
        if(i!=p && i!=q && !mp[{q,i}])
        {
            //cout<<i<<" "<<sum[i]<<" sum\n";
            for(auto x:con[i])
            {
                if(x!=p && x!=q && !mp[{q,x}])
                {
                    rez.push_back({min(sum[i],sum[x]),max(sum[i],sum[x])});
                }
            }
        }
    }
    InitMap(V-12,((int)rez.size())/2);
    sort(rez.begin(),rez.end());
    for(int i=0;i<rez.size();i+=2)
        MakeMap(rez[i].first,rez[i].second);

}

Compilation message (stderr)

Bob.cpp: In function 'void Bob(int, int, int*, int*)':
Bob.cpp:85:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   85 |     for(int i=0;i<rez.size();i+=2)
      |                 ~^~~~~~~~~~~
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