Submission #419461

#	Time	Username	Problem	Language	Result	Execution time	Memory
419461		snasibov05	Crocodile's Underground City (IOI11_crocodile)	C++14	46 / 100	2 ms	588 KiB

crocodile

#include "crocodile.h"
#include <vector>
#include <algorithm>

using namespace std;

#define ll long long
#define pb push_back
#define pii pair<ll, ll>
#define f first;
#define s second;
#define oo 1000000000000000000ll

vector<vector<pii>> ed;
vector<bool> ext;
vector<int> visited;
vector<ll> res;

int dfs(int v){
    visited[v] = 1;
    vector<ll> cur;
    for (auto [x, l] : ed[v]){
        if (visited[x] == 1) continue;

        if (ext[x]) cur.pb(l);
        else if (visited[x] == 2) cur.pb(res[x] + l);
        else cur.pb(dfs(x) + l);
    }
    visited[v] = 2;
    sort(cur.begin(), cur.end());
    if (cur.size() <= 1) return res[v] = oo;
    return res[v] = cur[1];
}

int travel_plan(int n, int m, int r[][2], int l[], int k, int p[]){

    ed.resize(n);
    ext.resize(n);
    visited.resize(n);
    res.resize(n);

    for (int i = 0; i < m; ++i) {
        ed[r[i][0]].pb({r[i][1], l[i]});
        ed[r[i][1]].pb({r[i][0], l[i]});
    }

    for (int i = 0; i < k; ++i) {
        ext[p[i]] = true;
    }

    int ans = dfs(0);

    return ans;

}

Compilation message (stderr)

crocodile.cpp: In function 'int dfs(int)':
crocodile.cpp:22:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   22 |     for (auto [x, l] : ed[v]){
      |               ^

• Subtask 1: 46 / 46
• Subtask 2: 0 / 43
• Subtask 3: 0 / 11