Submission #217509

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
217509	2020-03-30 04:27:07	Autoratch	Race (IOI11_race)	C++14	100 / 100	1795 ms	52600 KiB

race

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#include "race.h"
#include <bits/stdc++.h>
using namespace std;
const int N = 2e5 + 1;
const int K = 19;
int n,k,cn;
vector<pair<int,int> > adj[N];
vector<int> cen[N];
int sz[N],pa[N],ans = INT_MAX;
bool blocked[N];
int dist[N];
map<int,int> res;
void dfs(int u,int p){ sz[u] = 1; for(auto [d,v] : adj[u]) if(v!=p and !blocked[v]) dfs(v,u),sz[u]+=sz[v]; }
void build(int u,int cp)
{
    dfs(u,0);
    int c = u,prev = 0;
    while(true)
    {
        int mx = 0,id = 0;
        for(auto [d,v] : adj[c]) if(!blocked[v] and v!=prev) if(sz[v]>mx) mx = sz[v],id = v;
        if(mx*2>=sz[u]) prev = c,c = id;
        else break;
    }
    if(cp==0) cn = c;
    pa[c] = cp;
 
 
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Compilation message (stderr)

race.cpp: In function 'void dfs(int, int)':
race.cpp:16:44: warning: decomposition declaration only available with -std=c++1z or -std=gnu++1z
 void dfs(int u,int p){ sz[u] = 1; for(auto [d,v] : adj[u]) if(v!=p and !blocked[v]) dfs(v,u),sz[u]+=sz[v]; }
                                            ^
race.cpp:16:48: warning: unused variable 'd' [-Wunused-variable]
 void dfs(int u,int p){ sz[u] = 1; for(auto [d,v] : adj[u]) if(v!=p and !blocked[v]) dfs(v,u),sz[u]+=sz[v]; }
                                                ^
race.cpp: In function 'void build(int, int)':
race.cpp:25:18: warning: decomposition declaration only available with -std=c++1z or -std=gnu++1z
         for(auto [d,v] : adj[c]) if(!blocked[v] and v!=prev) if(sz[v]>mx) mx = sz[v],id = v;
                  ^
race.cpp:25:22: warning: unused variable 'd' [-Wunused-variable]
         for(auto [d,v] : adj[c]) if(!blocked[v] and v!=prev) if(sz[v]>mx) mx = sz[v],id = v;
                      ^
race.cpp:33:14: warning: decomposition declaration only available with -std=c++1z or -std=gnu++1z
     for(auto [d,v] : adj[c]) if(!blocked[v]) build(v,c);
              ^
race.cpp:33:18: warning: unused variable 'd' [-Wunused-variable]
     for(auto [d,v] : adj[c]) if(!blocked[v]) build(v,c);
                  ^
race.cpp: In function 'void sol(int, int, int, int, int, int)':
race.cpp:50:14: warning: decomposition declaration only available with -std=c++1z or -std=gnu++1z
     for(auto [d,v] : adj[u]) if(!blocked[v] and v!=p) sol(c,v,u,t,w+d,lv+1);
              ^
race.cpp: In function 'void run(int)':
race.cpp:55:14: warning: decomposition declaration only available with -std=c++1z or -std=gnu++1z
     for(auto [d,v] : adj[u]) if(!blocked[v])
              ^

• Subtask 1: 9 / 9
• Subtask 2: 12 / 12
• Subtask 3: 22 / 22
• Subtask 4: 57 / 57