oj.uz

Submission #308570

# Submission time Handle Problem Language Result Execution time Memory
308570 2020-10-01T14:37:01 Z kylych03 Crocodile's Underground City (IOI11_crocodile) C++14
0 / 100
 2 ms 2688 KB 
#include "crocodile.h"
#include <bits/stdc++.h>
//#include "grader.cpp"
using namespace std;
vector <pair <int, int > > g[100002];
int inf =1e9+7;
pair <int, int> a[100001];
int travel_plan(int N, int M, int R[][2], int L[], int K, int P[])
{
    for(int i = 0; i <= N; i++){
        a[i].first=inf;
        a[i].second=inf;
    }
 
    set <pair <int, int> > st;
    set <pair <int, int> > ::iterator it;
 
    for(int i  = 0 ; i < M ;i++){
        g[R[i][0]].push_back(make_pair (R[i][1], L[i]) );
        g[R[i][1]].push_back( make_pair (R[i][0], L[i]));
    }
    for(int i = 0; i < K; i++){
 
 
        st.insert(make_pair(0,P[i]));
        a[P[i]].first=0;
        a[P[i]].second=0;
 
    }
    while(!st.empty()){
         it  = st.begin();
        int len = it->first;
        int v = it -> second;
        st.erase(it);
 
         //if( len > a[v].second)
            //continue;
        for(int i= 0 ; i< g[v].size() ; i++ ){
            int to = g[v][i].first;
            int dis = g[v][i].second;
            if(a[to].second > len + dis){
                /*if(a[to].second!=inf){
                    pair <int, int> p1;
                    p1.first = a[to].second;
                    p1.second = to;
                    st.erase(p1);
 
                }*/
                a[to].second = len + dis;
                if(a[to].first > a[to].second)
                    swap(a[to].first, a[to].second);
                if(a[to].second < inf)
                st.insert(make_pair( a[to].second, to));
            }
        }
 
    }
 
    return a[0].second;
}
/*
 
5 4 3
0 1 2
0 2 3
3 2 1
2 4 4
1 3 4
*/

Compilation message

crocodile.cpp: In function 'int travel_plan(int, int, int (*)[2], int*, int, int*)':
crocodile.cpp:38:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |         for(int i= 0 ; i< g[v].size() ; i++ ){
      |                        ~^~~~~~~~~~~~~

Subtask #1
0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2688 KB Output is correct
2 Correct 2 ms 2688 KB Output is correct
3 Incorrect 2 ms 2688 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2688 KB Output is correct
2 Correct 2 ms 2688 KB Output is correct
3 Incorrect 2 ms 2688 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2688 KB Output is correct
2 Correct 2 ms 2688 KB Output is correct
3 Incorrect 2 ms 2688 KB Output isn't correct
4 Halted 0 ms 0 KB -