#include <bits/stdc++.h>
#include "grader.h"
using namespace std;
#define pb push_back
#define f first
#define s second
int vis[513],pos[513],ch[513];
int dfs(int n,vector<int>v[513],int idx=1){
vis[idx]=1;
int x=1;
for(int i=0;i<v[idx].size();i++){
if(!vis[v[idx][i]])
x+=dfs(n,v,v[idx][i]);
}
ch[idx]=x;
return x;
}
int tk[513];
vector<int> va,vb;
int dfs2(int n,vector<int>v[513],int idx=1){
vis[idx]=1;
vb.pb(idx);
tk[idx]=1;
for(int i=0;i<v[idx].size();i++){
if(!vis[v[idx][i]]){
dfs2(n,v,v[idx][i]);
}
}
return vb.size();
}
int findEgg (int n, vector<pair<int,int> > edg){
memset(vis,0,sizeof vis);
memset(pos,0,sizeof pos);
vector<int> v[513];
for(int i=0;i<edg.size();i++){
v[edg[i].f].pb(edg[i].s);
v[edg[i].s].pb(edg[i].f);
pos[edg[i].f]=1;
pos[edg[i].s]=1;
}
dfs(n,v,1);
vector<int> cur,h,z;
int x=1,a,b,zz;
while(1){
h.clear();
for(int i=1;i<=n;i++){
if(pos[i])
h.pb(i);
}
if(cur.size()>=h.size()){
if(query(cur)){
x=cur[0];
for(int i=0;i<cur.size();i++){
pos[cur[i]]=1;
}
for(int i=0;i<h.size();i++){
pos[h[i]]=0;
}
for(int i=0;i<v[cur[cur.size()-1]].size();i++){
for(int j=0;j<h.size();j++){
if(v[cur[cur.size()-1]][i]==h[j]){
ch[cur[cur.size()-1]]-=ch[h[j]];
v[cur[cur.size()-1]][i]=v[cur[cur.size()-1]][v[cur[cur.size()-1]].size()-1];
v[cur[cur.size()-1]].pop_back();
}
}
}
}
cur.clear();
continue;
}
if(h.size()==1){
break;
}
for(int i=1;i<=n;i++){
if(pos[i])
vis[i]=0;
else
vis[i]=1;
}
a=dfs2(n,v,x),b=1;
va.clear(),vb.clear();
vb.pb(x);
zz=0;
memset(tk,0,sizeof tk);
for(int i=0;i<v[x].size();i++){
if(b+ch[v[x][i]]<a&&pos[v[x][i]]==1){
zz++;
memset(vis,0,sizeof vis);
vis[x]=1;
dfs2(n,v,v[x][i]);
b+=ch[v[x][i]];
a-=ch[v[x][i]];
}
}
if(zz==0){
cur.pb(x);
pos[x]=0;
for(int i=0;i<v[x].size();i++){
if(pos[v[x][i]]){
x=v[x][i];
break;
}
}
continue;
}
for(int i=1;i<=n;i++){
if(pos[i]==1&&!tk[i]){
va.pb(i);
}
}
if(query(vb)){
cur.clear();
memset(pos,0,sizeof pos);
for(int i=0;i<vb.size();i++){
pos[vb[i]]=1;
}
if(zz==1){
for(int i=0;i<v[x].size();i++){
if(pos[v[x][i]]){
cur.pb(x);
pos[x]=0;
x=v[x][i];
break;
}
}
}
}
else if(cur.empty()||query(va)){
cur.clear();
memset(pos,0,sizeof pos);
for(int i=0;i<va.size();i++){
pos[va[i]]=1;
}
if(x!=1)
zz++;
if(zz==(int)(v[x].size())-1){
for(int i=0;i<v[x].size();i++){
if(pos[v[x][i]]){
pos[x]=0;
x=v[x][i];
break;
}
}
}
}
else{
memset(pos,0,sizeof pos);
for(int i=0;i<cur.size();i++){
pos[cur[i]]=1;
}
x=cur[0];
cur.clear();
}
}
return x;
}
Compilation message
eastereggs.cpp: In function 'int dfs(int, std::vector<int>*, int)':
eastereggs.cpp:13:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
13 | for(int i=0;i<v[idx].size();i++){
| ~^~~~~~~~~~~~~~
eastereggs.cpp: In function 'int dfs2(int, std::vector<int>*, int)':
eastereggs.cpp:26:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
26 | for(int i=0;i<v[idx].size();i++){
| ~^~~~~~~~~~~~~~
eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:37:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
37 | for(int i=0;i<edg.size();i++){
| ~^~~~~~~~~~~
eastereggs.cpp:55:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
55 | for(int i=0;i<cur.size();i++){
| ~^~~~~~~~~~~
eastereggs.cpp:58:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
58 | for(int i=0;i<h.size();i++){
| ~^~~~~~~~~
eastereggs.cpp:61:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
61 | for(int i=0;i<v[cur[cur.size()-1]].size();i++){
| ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
eastereggs.cpp:62:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
62 | for(int j=0;j<h.size();j++){
| ~^~~~~~~~~
eastereggs.cpp:88:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
88 | for(int i=0;i<v[x].size();i++){
| ~^~~~~~~~~~~~
eastereggs.cpp:101:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
101 | for(int i=0;i<v[x].size();i++){
| ~^~~~~~~~~~~~
eastereggs.cpp:117:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
117 | for(int i=0;i<vb.size();i++){
| ~^~~~~~~~~~
eastereggs.cpp:121:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
121 | for(int i=0;i<v[x].size();i++){
| ~^~~~~~~~~~~~
eastereggs.cpp:134:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
134 | for(int i=0;i<va.size();i++){
| ~^~~~~~~~~~
eastereggs.cpp:140:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
140 | for(int i=0;i<v[x].size();i++){
| ~^~~~~~~~~~~~
eastereggs.cpp:151:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
151 | for(int i=0;i<cur.size();i++){
| ~^~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Partially correct |
2 ms |
200 KB |
Number of queries: 9 |
| 2 |
Runtime error |
1 ms |
456 KB |
Execution killed with signal 6 |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
5 ms |
464 KB |
Execution killed with signal 6 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
5 ms |
508 KB |
Execution killed with signal 6 |
| 2 |
Halted |
0 ms |
0 KB |
- |
