Submission #94957

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
94957	2019-01-25 16:44:20	MvC	Synchronization (JOI13_synchronization)	C++11	100 / 100	442 ms	23660 KiB

synchronization

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#pragma GCC optimize("O3")
#include<bits/stdc++.h>
#define rc(x) return cout<<x<<endl,0
#define pb push_back
#define in insert
#define er erase
#define fd find
#define fr first
#define sc second
typedef long long ll;
const ll INF=0x3f3f3f3f3f3f3f3f;
const ll llinf=(1LL<<61);
const int inf=(1<<30);
const int nmax=2e5+50;
const int mod=1e9+7;
using namespace std;
int x,y,i,n,up[nmax][20],tin[nmax],tout[nmax],t,v,ans[nmax],q,m,fw[nmax],lst[nmax];
vector<int>a[nmax];
vector<pair<int,int> >e;
void dfs(int x,int p)
{
    tin[x]=++t;
    up[x][0]=p;
    for(int i=1;i<20;i++)up[x][i]=up[up[x][i-1]][i-1];
    for(int i=0;i<a[x].size();i++)if(a[x][i]!=p)dfs(a[x][i],x);
    tout[x]=t+1;
}
void upd(int i,int v)
{
  for(;i<=n;i+=i&(-i))fw[i]+=v;
 
 
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Compilation message (stderr)

synchronization.cpp: In function 'void dfs(int, int)':
synchronization.cpp:25:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<a[x].size();i++)if(a[x][i]!=p)dfs(a[x][i],x);
                 ~^~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 10 / 10
• Subtask 4: 20 / 20
• Subtask 5: 40 / 40