Submission #362003

#	Time	Username	Problem	Language	Result	Execution time	Memory
362003		keta_tsimakuridze	Easter Eggs (info1cup17_eastereggs)	C++14	100 / 100	23 ms	492 KiB

eastereggs

#include <bits/stdc++.h>
#include "grader.h"
#define f first
#define s second
using namespace std;
const int N=525;
int sz[N],par[N],fix[N],n,Egg[N],cnt,ind[N],timer,ans;
vector<int>v,V[N];
void dfs(int u,int p){
	timer++;
	ind[timer]=u;  
	for(int i=0;i<V[u].size();i++){
		if(V[u][i]==p) continue;
		dfs(V[u][i],u);
	}
}
int findEgg (int n1, vector < pair < int, int > > b)
{
	n=n1; timer=0;
  for(int i=1;i<=n;i++)V[i].clear();
   for(int i=0;i<b.size();i++){
   	V[b[i].f].push_back(b[i].s);
   	V[b[i].s].push_back(b[i].f);
   }
   dfs(1,0);
   ans=ind[n];
   int l=1,r=n-1;	
   while(l<=r){
   	int mid=(l+r)/2;
   	v.clear();
   	for(int i=1;i<=mid;i++){
   		v.push_back(ind[i]);
	}
	if(query(v)){
		ans=ind[mid];
		r=mid-1;
	}
	else l=mid+1;
   }
   return ans;
}

Compilation message (stderr)

eastereggs.cpp: In function 'void dfs(int, int)':
eastereggs.cpp:12:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |  for(int i=0;i<V[u].size();i++){
      |              ~^~~~~~~~~~~~
eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:21:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |    for(int i=0;i<b.size();i++){
      |                ~^~~~~~~~~

• Subtask 1: 40 / 40
• Subtask 2: 40 / 40
• Subtask 3: 20 / 20