| # | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 659134 | 2022-11-16T17:25:48 Z | ssense | Crocodile's Underground City (IOI11_crocodile) | C++14 | 0 ms | 0 KB |
#include <bits/stdc++.h>
#include "crocodile.h"
#define startt ios_base::sync_with_stdio(false);cin.tie(0);
typedef long long ll;
using namespace std;
#define vint vector<int>
#define all(v) v.begin(), v.end()
#define MOD 1000000007
#define MOD2 998244353
#define MX 1000000000
#define MXL 1000000000000000000
#define PI (ld)2*acos(0.0)
#define pb push_back
#define sc second
#define fr first
//#define int long long
#define endl '\n'
#define ld long double
#define NO cout << "NO" << endl
#define YES cout << "YES" << endl
int ceildiv(int one, int two) {if (one % two == 0) {return one / two;}else {return one / two + 1;}} int power(int n, int pow, int m) {if (pow == 0) return 1;if (pow % 2 == 0) {ll x = power(n, pow / 2, m);return (x * x) % m;}else return (power(n, pow - 1, m) * n) % m;} int gcd(int a, int b) { if (!b)return a; return gcd(b, a % b);} int factorial(int n, int mod) {if (n > 1)return (n * factorial(n - 1, mod)) % mod; else return 1;} int lcm(int a, int b) {return (a * b) / gcd(a, b);} vector<int> read(int n) {vector<int> a; for (int i = 0; i < n; i++) { int x; cin >> x; a.pb(x);} return a;}struct prefix_sum{vint pref;void build(vint a){pref.pb(0);for(int i = 0; i < a.size(); i++){pref.pb(pref.back()+a[i]);}}int get(int l, int r){return pref[r]-pref[l-1];}};//mesanu
ll travel_plan(int n, int m, int r[][2], int l[], int k, int p[])
{
vector<vector<pair<int, ll>>> adj(n, vector<pair<int, ll>>());
vector<pair<ll, ll>> certified(n, {MXL, MXL});
for(int i = 0; i < m; i++)
{
adj[r[i][1]].pb({r[i][0], l[i]});
adj[r[i][0]].pb({r[i][1], l[i]});
}
priority_queue<pair<ll, int>> q;
for(int i = 0; i < k; i++)
{
certified[p[i]].fr = 0;
certified[p[i]].sc = 0;
q.push({0, p[i]});
}
while(!q.empty())
{
int u = q.top().sc;
ll dist = -q.top().fr;
q.pop();
if(dist != certified[u].sc)
{
continue;
}
for(auto edge : adj[u])
{
int v = edge.fr;
ll len = edge.sc+dist;
if(len < certified[v].sc)
{
certified[v].sc = len;
if(len < certified[v].fr)
{
swap(certified[v].sc, certified[v].fr);
}
q.push({-certified[v].sc, v});
}
}
}
return certified[0].sc;
}
/*
int32_t main(){
startt
int n, m, k;
cin >> n >> m;
int r[m][2], l[m];
for(int i = 0; i < m; i++)
{
cin >> r[i][0] >> r[i][1];
}
for(int i = 0; i < m ; i++)
{
cin >> l[i];
}
cin >> k;
int p[k];
for(int i = 0; i < k; i++)
{
cin >> p[i];
}
cout << travel_plan(n, m, r, l, k, p) << endl;
}
*/
/*
5 4
0 1
0 2
3 2
2 4
2
3
1
4
3
1
3
4
*/