Submission #948877

#	Time	Username	Problem	Language	Result	Execution time	Memory
948877		steveonalex	Crocodile's Underground City (IOI11_crocodile)	C++14	0 / 100	2051 ms	6748 KiB

crocodile

#include <bits/stdc++.h>
#include "crocodile.h"

 
using namespace std;
 
typedef long long ll;
typedef unsigned long long ull;
 
#define MASK(i) (1ULL << (i))
#define GETBIT(mask, i) (((mask) >> (i)) & 1)
#define ALL(v) (v).begin(), (v).end()
 
ll max(ll a, ll b){return (a > b) ? a : b;}
ll min(ll a, ll b){return (a < b) ? a : b;}
 
ll LASTBIT(ll mask){return (mask) & (-mask);}
int pop_cnt(ll mask){return __builtin_popcountll(mask);}
int ctz(ull mask){return __builtin_ctzll(mask);}
int logOf(ull mask){return 63 - __builtin_clzll(mask);}
 
mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
ll rngesus(ll l, ll r){return l + (ull) rng() % (r - l + 1);}
 
template <class T1, class T2>
    bool maximize(T1 &a, T2 b){
        if (a < b) {a = b; return true;}
        return false;
    }
 
template <class T1, class T2>
    bool minimize(T1 &a, T2 b){
        if (a > b) {a = b; return true;}
        return false;
    }
 
template <class T>
    void printArr(T& container, string separator = " ", string finish = "\n", ostream &out = cout){
        for(auto item: container) out << item << separator;
        out << finish;
    }
 
template <class T>
    void remove_dup(vector<T> &a){
        sort(ALL(a));
        a.resize(unique(ALL(a)) - a.begin());
    }

struct P{
    int i; ll w;
    P(){}
    P(int _i, ll _w){i = _i, w = _w;}
};

struct compare{
    bool operator () (P a, P b){return a.w > b.w;}
};

const int N = 1e5 + 69;
const ll INF = 1e18 + 69;
vector<P> graph[N];

int travel_plan(int n, int m, int R[][2], int L[], int K, int E[]){
    for(int i = 0; i<m; ++i){
        int u = R[i][0], v = R[i][1];
        ll w = L[i];
        graph[u].push_back(P(v, w));
        graph[v].push_back(P(u, w));
    }

    priority_queue<P, vector<P>, compare> pq; 
    vector<ll> dis(n, INF);
    for(int i = 0; i<K; ++i){
        int u = E[i];
        pq.push(P(u, 0));
        dis[u] = 0;
    }
    while(pq.size()){
        P u = pq.top(); pq.pop();
        for(P v: graph[u.i]) if (minimize(dis[v.i], dis[u.i] + v.w)) 
            pq.push(P(v.i, dis[v.i]));
    }
    ll ans = 0;
    int u = 0;
    while(dis[u] > 0){
        vector<pair<P, ll>> kost;
        for(P v: graph[u]) kost.push_back({v, dis[v.i] + v.w});
        sort(ALL(kost), [](pair<P, ll> a, pair<P, ll> b){return a.second < b.second;});
        P the_one = kost[1].first;
        ans += the_one.w;
        u = the_one.i;
    }
    return ans;
}


// int main(void){
//     ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);



//     return 0;
// }

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