Submission #394585

#	Time	Username	Problem	Language	Result	Execution time	Memory
394585		definitelynotmee	Crocodile's Underground City (IOI11_crocodile)	C++98	100 / 100	914 ms	89808 KiB

crocodile

#include <bits/stdc++.h>
#include "crocodile.h"
#define mp make_pair
#define mt make_tuple
#define ff first
#define ss second
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
const ll INFL = (1LL<<62)-1;
const int INF = (1<<30)-1;
const int MAXN = 100001;

vector<pll> grafo[MAXN];

int travel_plan(int n, int m, int r[][2], int l[], int k, int p[]){
    
    for(int i = 0; i < m; i++){
        grafo[r[i][0]].push_back({r[i][1], l[i]});
        grafo[r[i][1]].push_back({r[i][0], l[i]});
    }
    
    multiset<pll> s;
    vector<pll> dist(n,{INFL,INFL});
    vector<set<ll>> possd (n);
    vector<bool> passq(n,0);
    for(int i = 0; i < k; i++)
        s.insert({0,p[i]}), dist[p[i]] = {0,0};
    
    while(!s.empty()){
        ll cur = s.begin()->second;
        s.erase(s.begin());
        if(passq[cur] == 1)
            continue;
        passq[cur] = 1;
        for(int i = 0; i < grafo[cur].size(); i++){
            
            ll viz = grafo[cur][i].ff;
            ll vizp = grafo[cur][i].ss;
            if(vizp + dist[cur].ff < dist[viz].ss){
                dist[viz].ff = dist[viz].ss;
                dist[viz].ss = vizp + dist[cur].ff;
                s.insert({dist[viz].ff, viz});
            } else if(vizp + dist[cur].ff < dist[viz].ff){
                dist[viz].ff = vizp + dist[cur].ff;
                s.insert({dist[viz].ff, viz});
            }
        }
    }
    return dist[0].ff;
}

Compilation message (stderr)

crocodile.cpp: In function 'int travel_plan(int, int, int (*)[2], int*, int, int*)':
crocodile.cpp:37:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |         for(int i = 0; i < grafo[cur].size(); i++){
      |                        ~~^~~~~~~~~~~~~~~~~~~

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