Submission #735882

#	Time	Username	Problem	Language	Result	Execution time	Memory
735882		tigar	Crocodile's Underground City (IOI11_crocodile)	C++14	0 / 100	2 ms	2644 KiB

crocodile

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

using namespace std;
typedef long long ll;

ll INF=LONG_MAX;
vector<pair<ll,  ll> >graff[100010];
bool izlaz[100010], check[100010];
int T[100010];

void dfs(int v)
{
    if(check[v])return;
    check[v]=true;
    if(izlaz[v]){T[v]=0; return;}
    ll m1=INF, m2=INF;
    for(int i=0; i<graff[v].size(); i++)
    {
        dfs(graff[v][i].first);
        ll xx=T[graff[v][i].first]+graff[v][i].second;
        if(xx<m1){m2=m1; m1=xx;}
        else if(xx>=m1 and xx<=m2){m2=xx;}
    }
    T[v]=m2;
    return;
}

int travel_plan(int n, int m, int r[][2], int l[], int k, int p[])
{
    for(int i=0; i<m; i++)
    {
        graff[r[i][0]].push_back({r[i][1], l[i]});
        graff[r[i][1]].push_back({r[i][0], l[i]});
    }
    for(int i=0; i<k; i++)izlaz[p[i]]=true;
    for(int i=0; i<n; i++)T[i]=INF;
    dfs(0);
    return T[0];
}

Compilation message (stderr)

crocodile.cpp: In function 'void dfs(int)':
crocodile.cpp:18:19: 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]
   18 |     for(int i=0; i<graff[v].size(); i++)
      |                  ~^~~~~~~~~~~~~~~~

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