제출 #345769

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
345769		daniel920712	악어의 지하 도시 (IOI11_crocodile)	C++14	0 / 100	11 ms	9836 KiB

crocodile

#include "crocodile.h"
#include <vector>
#include <utility>
#include <algorithm>
#include <queue>
#include <map>
using namespace std;
bool is[100005];
long long small[5][100005];
vector < pair < long long , long long > > Next[100005];
vector < pair < long long , long long > > Next2[100005];
map < long long , long long > how[100005];
bool have[5][100005]={0};
long long ans=0;
priority_queue < pair < long long , pair < long long , long long > > , vector < pair < long long , pair < long long , long long > > > , greater < pair < long long , pair < long long , long long > > > > dij;
long long F(long long fa,long long here,long long con)
{
    long long t;
    vector < pair < long long , long long > > tt;
    //printf("%lld %lld\n",here,con);
    if(is[here])
    {
        ans=con;
        return 0;
    }
    for(auto i:Next[here]) if(small[1][i.first]!=-1&&i.first!=fa) tt.push_back(make_pair(small[1][i.first]+i.second,i.first));


    sort(tt.begin(),tt.end());
    //printf("%lld %d\n",here,tt.size());
    if(tt.size()>=2)
    {
        return F(here,tt[1].second,con+how[here][tt[1].second]);
    }
    else while(1) ;
}
int travel_plan(int N, int M, int R[][2], int L[], int K, int P[])
{
    int i,j;
    long long a,b,c;
    for(i=0;i<M;i++)
    {
        Next[R[i][0]].push_back(make_pair((long long) R[i][1],(long long) L[i]));
        Next[R[i][1]].push_back(make_pair((long long) R[i][0],(long long) L[i]));
        how[R[i][0]][R[i][1]]=L[i];
        how[R[i][1]][R[i][0]]=L[i];
    }

    for(i=0;i<K;i++)
    {
        is[P[i]]=1;
        small[0][P[i]]=0;
        small[1][P[i]]=0;

    }
    for(i=0;i<N;i++)
    {
        small[0][i]=-1;
        small[1][i]=-1;
        for(j=0;j<N;j++)
        {
            have[0][j]=0;
            have[1][j]=0;
        }
        dij.push(make_pair(0,make_pair(i,-1)));
        while(!dij.empty())
        {

            a=dij.top().first;
            b=dij.top().second.first;
            c=dij.top().second.second;
            dij.pop();

            if(is[b])
            {
                if(small[0][i]==-1) small[0][i]=a;
                else if(small[1][i]==-1) small[1][i]=a;
                continue;
            }

            if(have[0][b]==0) have[0][b]=1;
            else if(have[1][b]==0) have[1][b]=1;
            else continue;

            for(auto i:Next[b])
            {
                if(i.first==c) continue;
                //printf("%lld %lld\n",i.first,i.second);
                dij.push(make_pair(i.second+a,make_pair(i.first,b)));
            }
        }
        //printf("%lld %lld\n",small[0][i],small[1][i]);
    }
    for(i=0;i<K;i++)
    {
        is[P[i]]=1;
        small[0][P[i]]=0;
        small[1][P[i]]=0;

    }

    //for(i=0;i<N;i++) printf("aa %lld %lld\n",small[0][i],small[1][i]);
    F(-1,0,0);
    return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

crocodile.cpp: In function 'long long int F(long long int, long long int, long long int)':
crocodile.cpp:18:15: warning: unused variable 't' [-Wunused-variable]
   18 |     long long t;
      |               ^

• Subtask 1: 0 / 46
• Subtask 2: 0 / 43
• Subtask 3: 0 / 11