//created by Oleksandr Gorpynich
#pragma GCC optimize("O2")
#include <fstream>
#include <string>
#include <iostream>
#include <bitset>
#include <math.h>
#include <string>
#include <algorithm>
#include <assert.h>
#include <bits/stdc++.h>
#include <vector>
#include <queue>
#include<stdio.h>
#include<ctype.h>
#define ll long long
using namespace std;
int n, m, k;
struct con{
int des;
int we;
};
/*
5 7 2
0 2 4
0 3 3
3 2 2
2 1 10
0 1 100
0 4 7
3 4 9
1 3 */
vector<con> cons[100002];
ll dist[100002][2];
ll used[100002][2];
int one, two, three;
int main(){
cin >> n >> m >> k;
for (int x = 0; x < m; x++){
cin >> one >> two >> three;
cons[one].push_back({two, three});
cons[two].push_back({one, three});
}
priority_queue<tuple<ll, ll, ll>> q;
for (int x = 0; x <= n; x++){
used[x][0] = 2; used[x][1] = 2;
dist[x][0] = 1e9; dist[x][1] = 1e9;
}
for (int x = 0; x < k; x++){
cin >> one;
q.push(make_tuple(0, one, 0));
q.push(make_tuple(0, one, 1));
dist[one][0] = 0;
dist[one][1] = 0;
used[one][0] = 2;
used[one][1] = 2;
}
while(q.size() > 0){
ll cur;
ll curdist;
ll type;
tie(curdist, cur, type) = q.top();
q.pop();
if (used[cur][type] == 2) {
used[cur][type] = 1;
if (type == 1){
for (auto con: cons[cur]){
if (curdist + con.we <= dist[con.des][0]){
dist[con.des][1] = dist[con.des][0];
dist[con.des][0] = curdist + con.we;
if (dist[con.des][1] != 1e9) {
q.push(make_tuple(dist[con.des][1], con.des, 1));
}
}
else if (curdist + con.we <= dist[con.des][1]){
dist[con.des][1] = curdist + con.we;
if (dist[con.des][1] != 1e9) {
q.push(make_tuple(dist[con.des][1], con.des, 1));
}
}
}
}
}
}
cout << dist[0][1] << "\n";
}
Compilation message
/usr/bin/ld: /tmp/ccpsTvoH.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccQwINfF.o:crocodile.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccpsTvoH.o: in function `main':
grader.cpp:(.text.startup+0x36): undefined reference to `travel_plan(int, int, int (*) [2], int*, int, int*)'
collect2: error: ld returned 1 exit status
