Submission #305994

#	Time	Username	Problem	Language	Result	Execution time	Memory
305994		juggernaut	Dreaming (IOI13_dreaming)	C++14	0 / 100	582 ms	24696 KiB

dreaming

#include"dreaming.h"
//#include"grader.c"
#include<bits/stdc++.h>
#define fr first
#define sc second
using namespace std;
vector<pair<int,int>>g[100005];
int path[105],mn,idd;
bool vis[105];
void dfs(int v,int p,int depth,int glob){
    path[glob]=max(depth,path[glob]);
    mn=max(mn,depth);
    for(auto to:g[v])
    if(to.fr!=p)
        dfs(to.fr,v,depth+to.sc,glob);
}
void go(int v,int p){
    vis[v]=1;
    mn=min(mn,path[v]);
    if(path[v]<mn){
        mn=path[v];
        idd=v;
    }
    for(auto to:g[v])
    if(to.fr!=p)
        go(to.fr,v);
}
int travelTime(int n,int m,int l,int x[],int y[],int z[]){
    int i;
    for(i=0;i<m;i++){
        g[x[i]].push_back({y[i],z[i]});
        g[y[i]].push_back({x[i],z[i]});
    }
    for(i=0;i<n;i++)dfs(i,i,0,i);
    stack<int>st;
    for(i=0;i<n;i++)if(!vis[i]){
        mn=2e9;
        go(i,i);
        st.push(idd);
    }
    int xx=st.top();
    st.pop();
    int yy=st.top();
    st.pop();
    g[xx].push_back({yy,0});
    g[yy].push_back({xx,0});
    mn=0;
    for(i=0;i<n;i++)dfs(i,i,0,i);
    return mn;
}

• Subtask 1: 0 / 14
• Subtask 2: 0 / 10
• Subtask 3: 0 / 23
• Subtask 4: 0 / 18
• Subtask 5: 0 / 12
• Subtask 6: 0 / 23