oj.uz

답안 #1102650

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1102650 2024-10-18T15:00:17 Z asli_bg 악어의 지하 도시 (IOI11_crocodile) C++11
0 / 100
 2 ms 6480 KB 
#pragma GCC optimize("O3,unroll-loops")
#include "crocodile.h"
 
#include<bits/stdc++.h>
using namespace std;
 
#define fi first
#define se second
#define all(x) x.begin(),x.end()
#define FOR(i,a) for(int i=0;i<(a);i++)
#define FORE(i,a,b) for(int i=(a);i<(b);i++)
 
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<bool> vb;
typedef vector<pii> vii;
 
#define cont(x) for(auto el:x) {cout<<el<<' ';} cout<<endl;
#define endl '\n'
#define contp(x) for(auto el:x) {cout<<el.fi<<'-'<<el.se<<' ';} cout<<endl;
#define pb push_back
 
#define sp <<' '<<
 
#define DEBUG(x) {cout<<(#x) sp x<<endl;}
 
const int MAXN=1e5+5;
const int INF=1e9;
 
int n,m,k;
vii adj[MAXN];
int mn[MAXN],mn2[MAXN];
bool cikis[MAXN];
 
void dij(int bas){
    set<pii> s;
    s.insert({0,bas});
 
    while(!s.empty()){
        auto el=*s.begin();
        s.erase(*s.begin());
 
        int nd=el.se;
        int dd=el.fi;
 
        for(auto ell:adj[nd]){
            int kom=ell.fi;
            int cost=ell.se;
 
            vi temp;
            temp.pb(mn[kom]);
            temp.pb(mn2[kom]);
            temp.pb(dd+cost);
            sort(all(temp));
 
            mn[kom]=temp[0];
 
            if(temp[1]<mn2[kom]){
                s.erase({mn2[kom],kom});
                mn2[kom]=temp[1];
                s.insert({mn2[kom],kom});
            }
 
        }
    }
}

bool vis[MAXN];

void dfs(int nd){
    vis[nd]=true;
    for(auto el:adj[nd]){
        int kom=el.fi;
        int cost=el.se;
        if(vis[kom]) continue;
        dfs(kom);
        //mn[nd], mn2[nd] / mn[kom], mn2[kom]
        vi temp;
        temp.pb(mn[nd]);
        temp.pb(mn2[nd]);
        temp.pb(mn2[kom]+cost);
        sort(all(temp));
 
        mn[nd]=temp[0];
        mn2[nd]=temp[1];
    }
}


int travel_plan(int N, int M, int R[][2], int L[], int K, int P[]){
    n=N;
    m=M;
    k=K;
    FOR(i,m){
        int bir=R[i][0];
        int iki=R[i][1];
        bir++;iki++;
        adj[bir].pb({iki,L[i]});
        adj[iki].pb({bir,L[i]});
    }
 
    FOR(i,k){
        P[i]++;
        cikis[P[i]]=true;
    }

    FORE(i,1,n+1){
        if(cikis[i]) mn[i]=mn2[i]=0;
        else mn[i]=mn2[i]=INF;
    }

    FORE(i,1,n+1){
        if(cikis[i]){
            dij(i); //shortest path hesapla
        }
    }

    dfs(1);

    return mn2[1];
}

Subtask #1
0 / 46.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 6480 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 43.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 6480 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 6480 KB Output isn't correct
2 Halted 0 ms 0 KB -