oj.uz

Submission #138678

# Submission time Handle Problem Language Result Execution time Memory
138678 2019-07-30T08:27:49 Z MrBrionix Crocodile's Underground City (IOI11_crocodile) C++14
0 / 100
 6 ms 4984 KB 
#include "crocodile.h"
#include <stdio.h>
#include <stdlib.h>
#include<bits/stdc++.h>
using namespace std;
/*
#define MAX_N 50000
#define MAX_M 10000000

static int N, M;
static int R[MAX_M][2];
static int L[MAX_M];
static int K;
static int P[MAX_N];
static int solution;

inline 
void my_assert(int e) {if (!e) abort();}

void read_input()
{
  int i;
  my_assert(3==scanf("%d %d %d",&N,&M,&K));
  for(i=0; i<M; i++)
    my_assert(3==scanf("%d %d %d",&R[i][0],&R[i][1],&L[i]));
  for(i=0; i<K; i++)
    my_assert(1==scanf("%d",&P[i]));
  //my_assert(1==scanf("%d",&solution));
}
*/

vector<int> grafo[100005],peso[100005];
int sol[100005][2],n,m,tmp;
priority_queue<pair<int,int> > pq;

/*
5 4 3
0 1 2
0 2 3
3 2 1
2 4 4
1
3
4
*/

void dfs(int nodo){
    
    for(int i=0;i<grafo[nodo].size();i++){
        
        if(sol[grafo[nodo][i]][0]==-1 || sol[grafo[nodo][i]][0]>(sol[nodo][1]+peso[nodo][i])){
            sol[grafo[nodo][i]][1]=sol[grafo[nodo][i]][0];
            sol[grafo[nodo][i]][0]=sol[nodo][1]+peso[nodo][i];
            if(sol[grafo[nodo][i]][1]!=-1)
            pq.push({-sol[grafo[nodo][i]][1],grafo[nodo][i]});
        }
        else{
            if(sol[grafo[nodo][i]][1]==-1 || sol[grafo[nodo][i]][1]>(sol[nodo][1]+peso[nodo][i])){
                sol[grafo[nodo][i]][1]=sol[nodo][1]+peso[nodo][i];
                pq.push({-sol[grafo[nodo][i]][1],grafo[nodo][i]});
            }
        }
        
    }
    
}

int travel_plan(int N, int M, int R[][2], int L[], int K, int P[]){
    
    for(int i=0;i<M;i++){
        grafo[R[i][0]].push_back(R[i][1]);
        grafo[R[i][1]].push_back(R[i][0]);
        peso[R[i][0]].push_back(L[i]);
        peso[R[i][1]].push_back(L[i]);
    }
    
    for(int i=0;i<N;i++)sol[i][0]=sol[i][1]=-1;
    
    for(int i=0;i<K;i++){
        sol[P[i]][0]=sol[P[i]][1]=0;
        pq.push({0,P[i]});
    }
    
    while(pq.size()>0){
        tmp=pq.top().second;
        pq.pop();
        dfs(tmp);
    }
    
    return sol[0][1];
}




/*
int main()
{
  int ans;
  read_input();
  ans = travel_plan(N,M,R,L,K,P);
  cout<<ans<<endl;
  if(ans==solution)
    printf("Correct.\n");
  else
    printf("Incorrect. Returned %d, Expected %d.\n",ans,solution);

  return 0;
}
*/

Compilation message

crocodile.cpp: In function 'void dfs(int)':
crocodile.cpp:49:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<grafo[nodo].size();i++){
                 ~^~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 46.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 4984 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 43.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 4984 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 4984 KB Output isn't correct
2 Halted 0 ms 0 KB -