Submission #171426

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
171426	2019-12-28 16:12:02	dolphingarlic	Synchronization (JOI13_synchronization)	C++14	100 / 100	984 ms	23928 KiB

synchronization

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#include <bits/stdc++.h>
#define F(y)for(int i=1;i<y;i++)
#define x first
#define y second
using namespace std;
const int N=200001;
vector<int> g[N];
pair<int,int> e[N];
int n,m,q,f[N],l[N],t=1,tin[N],tout[N],c[N][20],b[N];
void dfs(int v=1,int p=0){
c[v][0]=p;
F(20)c[v][i]=c[c[v][i - 1]][i - 1];
f[v]=1;
tin[v]=t++;
for(int i : g[v])if(i != p)dfs(i,v);
tout[v]=t;
}
void up(int p,int val){for(; p <= n; p +=(p &(-p)))b[p] += val;}
int qu(int p){
int ans=0;
for(; p; p -=(p &(-p)))ans += b[p];
return ans;
}
int lca(int v){
int ll=v;
for(int i=19;~i;i--)if(c[ll][i]&&qu(tin[c[ll][i]])==qu(tin[v]))ll=c[ll][i];
return ll;
}
main(){
cin >> n >> m >> q;
 
 
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Compilation message (stderr)

synchronization.cpp:29:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^

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